Method and system for judging overweight take-off of transport plane in consideration of risk time

Abstract

The invention belongs to the technical field of transport plane performance design, and particularly relates to a method and system for judging overweight takeoff of a transport plane in consideration of risk time, and a task initiation unit obtains related parameters in a transportation task demand to calculate the takeoff weight of a to-be-executed task after sending out the transportation task demand according to the to-be-executed task; calculating the maximum takeoff weight of the transport plane at the airport according to airworthiness requirements, and judging the takeoff weight and the maximum weight; when the transport plane takes off in an over-weight mode, the risk time of the take-off process is evaluated; by comparing the weight and the time and combining the current takeoff scene condition, the condition judgment whether the takeoff can be carried out accurately and quantitatively is carried out, and the stable, long-term and massive air transportation judgment process is realized. Meanwhile, the failure of one aircraft can be accurately judged, whether the transport aircraft can take off or not under the failure condition of one aircraft can be accurately judged through time, and the application range is wide.

Description

Technical Field

[0001] The present application belongs to the technical field of transport aircraft performance design, and in particular, relates to a method and system for determining whether a transport aircraft takes overweight takeoff into consideration during risk time. Background Art

[0002] Transport aircraft are currently the fastest and longest-range delivery vehicles in the military. The mission capability of transport aircraft is based on the results of takeoff performance. For the convenience of description, this article involves the following takeoff weight concept.

[0003] W 结构 ——The transport aircraft parameters determine the maximum take-off weight of the transport aircraft;

[0004] W 机场 ——Airport conditions determine the takeoff weight allowed by the airport;

[0005] W 适航 - Take-off weight permitted by airport conditions and airworthiness requirements;

[0006] W 结构，适航 - the maximum weight of a transport aircraft taking off at a certain airport according to airworthiness requirements;

[0007] W 结构，机场 - the maximum weight of a transport aircraft that can take off from a certain airport without taking into account airworthiness requirements;

[0008] W 任务需求 ——The take-off weight required for the transport aircraft's transport mission.

[0009] The take-off weight of a transport aircraft is determined by three constraints: aircraft parameters, airport conditions, and airworthiness requirements. Aircraft parameters include engine thrust, lift characteristics, structural support, etc. The maximum take-off weight W of a transport aircraft is determined by the aircraft parameters. 结构 Airport conditions include environmental conditions, runway length, clearance conditions, obstacle information, etc. Airport conditions determine the airport's allowable takeoff weight W. 机场 , the calculation process does not consider the failure of one engine. The airworthiness requirements fully consider the impact of an engine failure on all aspects of the transport aircraft. The airworthiness requirements determine the airworthiness allowable takeoff weight W 适航 Obviously W 机场 ≥W 适航 .

[0010] The maximum weight of a transport aircraft taking off at a certain airport according to airworthiness requirements W 结构，适航 for:

[0011] W 结构，适航 =min{W 结构 , W 适航} (1)

[0012] The maximum weight W of a transport aircraft taking off from a certain airport without considering airworthiness requirements 结构，机场 for:

[0013] W 结构，机场 =min{W 结构 , W 机场} (2)

[0014] Obviously W 结构，适航 ≤W 结构，机场 When the airport conditions are good, the two values ​​are close; when the airport conditions are insufficient, the difference between the two is obvious.

[0015] By analyzing the transport mission to be performed by the transport aircraft, such as transporting a certain weight load to the target range, the takeoff weight W of the mission to be performed can be calculated. 任务需求 , naturally requires W 结构 ≥W 任务需求 .

[0016] Study the conditions of the transport airport where the transport aircraft departs, and substitute the transport aircraft parameters and airworthiness requirements to obtain W 结构，适航 and W 结构，机场 If W 结构，机场 ≥W 任务需求 >W 结构，适航 , and the transport aircraft is W 任务需求 Weight takeoff, this situation is called over-weight takeoff.

[0017] Weight 任务需求 Takeoff within the maximum takeoff weight range of the transport aircraft and the takeoff weight range allowed by the airport requires breaking through the original airworthiness requirements and designing the takeoff performance under certain risk conditions.

[0018] At present, there is a lack of clear and quantitative determination methods for transport aircraft under overweight takeoff scenarios. First, the traditional takeoff performance design method is based on airworthiness requirements. The design of airworthiness requirements is based on long-term, large-scale, and regular air transportation. The overweight takeoff scenario conditions are short-term, small-scale, and occasional air transportation. The two are not completely consistent; secondly, airworthiness requirements fully consider the impact of an engine failure on each stage of transport aircraft takeoff, but the time of each stage of takeoff is different, and the probability is naturally different. Under overweight takeoff conditions, it should be comprehensively considered according to the probability of danger. Therefore, it is very important to develop a clear and quantitative method for determining overweight takeoff of transport aircraft. Summary of the invention

[0019] The purpose of the present application is to provide a method and system for determining an overweight takeoff of a transport aircraft taking into account the risk time, so as to solve the problem of lack of a clear and quantitative determination method in the existing transport aircraft overweight takeoff scenario.

[0020] The technical solution of the present application is: a method for determining whether a transport aircraft takes off with overweight in consideration of risk time, comprising:

[0021] Determine the research object of transport aircraft, given airport, and given the corresponding transport aircraft's tasks to be performed;

[0022] After the mission initiator issues a transport mission requirement based on the mission to be executed, it obtains the relevant parameters in the transport mission requirement and calculates the takeoff weight W of the mission to be executed. 任务需求 The transport execution unit calculates the maximum weight W of the transport aircraft taking off at the airport according to the airworthiness requirements based on the transport aircraft parameters, airport conditions and airworthiness requirements. 结构，适航 , determine the takeoff weight W 任务需求 With maximum weight W 结构，适航 The size of W 结构，适航 <W 任务需求 , then further determine W 结构，机场 and W 任务需求 Relationship, if W 结构，机场 ≥W 任务需求 >W 结构，适航 , and when the mission importance reaches the set level and receives relevant authorization, the transport aircraft will be carried out with overweight takeoff; W 结构，机场 The maximum weight of a transport aircraft that can take off from a certain airport without considering airworthiness requirements;

[0023] When a transport aircraft takes off with an overweight load, the risk time T of the takeoff process is evaluated based on the design parameters of the transport aircraft and the importance of the mission to be performed. 风险 ; When based on the risk time T 风险 When it is determined that the takeoff can be released, proceed to the next step;

[0024] Judge W 任务需求 Can the aircraft take off and clear obstacles with the takeoff weight? If so, proceed to the next step;

[0025] Judge W 任务需求 Can the aircraft take off and climb with the takeoff weight? If so, proceed to the next step;

[0026] Judge W 任务需求 Can the takeoff weight be taken off and roll? If so, it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0027] Preferably, if W 结构，适航 ≥W 任务需求 , according to W 任务需求 Just design the flight mission and the design is complete.

[0028] Preferably, if W 结构，机场 <W 任务需求 , the task cannot be executed and the design ends.

[0029] Preferably, according to the risk time T 风险 The specific method for judging whether the takeoff can be released is: the sum of the time process of the transport aircraft being in danger due to the failure of one engine is called the danger time T 危险 ; Risk time T 风险 and the dangerous time T 危险 If the risk time T 风险 ≥ Dangerous time T 危险 , then the risk of overweight takeoff is considered controllable and the takeoff can be released; if the risk time T 风险 <Dangerous time T 危险 , then it is determined that the risk of the overweight takeoff process is uncontrollable and the takeoff cannot be allowed.

[0030] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can take off and clear obstacles is as follows: first calculate the obstacle clearance time under full engine conditions according to the actual obstacle clearance requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and clearing process, where the time when the aircraft cannot take off and clear obstacles is T. 危险，越障 , T 危险 =T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to overcome obstacles and proceed to the next step.

[0031] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can take off and climb is as follows: first calculate the climb time under full engine conditions according to the actual climb requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and climb process, where the time when the takeoff and climb cannot be taken off is T. 危险，爬升 , T 危险 =T 危险，爬升 +T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to climb and move to the next step.

[0032] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can be used for takeoff and rolling is as follows: according to the actual rolling requirements of the airport, first calculate the rolling time under full-engine conditions, and then evaluate the result of one engine failure at any time point during the takeoff and rolling process. The time when the transport aircraft cannot be guaranteed to be safe is T. 危险，滑跑 , T 危险 =T 危险，滑跑 +T 危险，爬升 +T 危险，越障, T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , it can taxi, and it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0033] As a specific implementation, a transport aircraft taking into account risk time overweight takeoff determination system adopts the determination method according to any one of claims 1 to 7, characterized in that it comprises a precondition determination module, a takeoff weight determination module, a risk time assessment module, a takeoff obstacle determination module, a takeoff climb determination module and a takeoff run determination module;

[0034] The precondition determination module can determine the transport aircraft research object, a given airport, and the tasks to be performed for the corresponding transport aircraft;

[0035] The takeoff weight determination module can obtain the relevant parameters in the transport task requirements and calculate the takeoff weight W of the task to be executed after the task initiator issues the transport task requirements according to the task to be executed. 任务需求 The transport execution unit calculates the maximum weight W of the transport aircraft taking off at the airport according to the airworthiness requirements based on the transport aircraft parameters, airport conditions and airworthiness requirements. 结构，适航 , determine the takeoff weight W 任务需求 With maximum weight W 结构，适航 The size of W 结构，适航 <W 任务需求 , then further determine W 结构，机场 and W 任务需求 Relationship, if W 结构，机场 ≥W 任务需求 >W 结构，适航 , and when the mission importance reaches the set level and receives relevant authorization, the transport aircraft will be carried out with overweight takeoff; W 结构，机场 The maximum weight of a transport aircraft that can take off from a certain airport without considering airworthiness requirements;

[0036] The risk time assessment module can assess the risk time T of the take-off process when the transport aircraft takes off with overweight according to the design parameters of the transport aircraft and the importance of the mission to be performed. 风险 ; When based on the risk time T 风险 When it is determined that the takeoff can be released, proceed to the next step;

[0037] The takeoff obstacle determination module can determine W 任务需求 Can the aircraft take off and clear obstacles with the takeoff weight? If so, proceed to the next step;

[0038] The takeoff climb determination module can determine W 任务需求 Can the aircraft take off and climb with the takeoff weight? If so, proceed to the next step;

[0039] The takeoff run determination module can determine W 任务需求 Can the takeoff weight be taken off and roll? If so, it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0040] Preferably, if W 结构，适航 ≥W 任务需求 , according to W 任务需求 Just design the flight mission and the design is complete.

[0041] Preferably, if W 结构，机场 <W 任务需求 , the task cannot be executed and the design ends.

[0042] Preferably, according to the risk time T 风险 The specific method for judging whether the takeoff can be released is: the sum of the time process of the transport aircraft being in danger due to the failure of one engine is called the danger time T 危险 ; Risk time T 风险 and the dangerous time T 危险 If the risk time T 风险 ≥ Dangerous time T 危险 , then the risk of overweight takeoff is considered controllable and the takeoff can be released; if the risk time T 风险 <Dangerous time T 危险 , then it is determined that the risk of the overweight takeoff process is uncontrollable and the takeoff cannot be allowed.

[0043] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can take off and clear obstacles is as follows: first calculate the obstacle clearance time under full engine conditions according to the actual obstacle clearance requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and clearing process, where the time when the aircraft cannot take off and clear obstacles is T. 危险，越障 , T 危险 =T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to overcome obstacles and proceed to the next step.

[0044] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can take off and climb is as follows: first calculate the climb time under full engine conditions according to the actual climb requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and climb process, where the time when the takeoff and climb cannot be taken off is T. 危险，爬升 , T 危险 =T 危险，爬升 +T 危险，越障 ; T 危险Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to climb and move to the next step.

[0045] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can be used for takeoff and rolling is as follows: according to the actual rolling requirements of the airport, first calculate the rolling time under full-engine conditions, and then evaluate the result of one engine failure at any time point during the takeoff and rolling process. The time when the transport aircraft cannot be guaranteed to be safe is T. 危险，滑跑 , T 危险 =T 危险，滑跑 +T 危险，爬升 +T 危险，越障 , T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , it can taxi, and it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0046] The method and system for determining whether a transport aircraft can take off with overweight at risk time in this application compares weight and time, and makes an accurate and quantitative determination of whether the aircraft can take off in combination with the current takeoff scene conditions, thereby realizing a stable, long-term, and large-scale air transport determination process. At the same time, it can accurately determine whether a single engine fails, and can accurately determine whether the transport aircraft can take off under the condition of a single engine failure by time, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

[0048] Figure 1 A flow chart for determining overweight takeoff during risk time is considered for this application;

[0049] Figure 2 Takeoff obstacle determination flow chart considering risk time for this application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] A method for determining overweight takeoff of a transport aircraft considering risk time, wherein:

[0052] W 结构 ——The transport aircraft parameters determine the maximum take-off weight of the transport aircraft;

[0053] W 机场 ——Airport conditions determine the takeoff weight allowed by the airport;

[0054] W 适航 - Take-off weight permitted by airport conditions and airworthiness requirements;

[0055] W 结构，适航 - the maximum weight of a transport aircraft taking off at a certain airport according to airworthiness requirements;

[0056] W 结构，机场 - the maximum weight of a transport aircraft that can take off from a certain airport without taking into account airworthiness requirements;

[0057] W 任务需求 ——The take-off weight required for the transport aircraft's transport mission.

[0058] The steps include:

[0059] Step S100, determining the transport aircraft research object, a given airport, and the tasks to be performed for the corresponding transport aircraft.

[0060] Preferably, the transport aircraft is a fixed-wing jet transport aircraft.

[0061] Step S200: After the task initiator issues a transport task requirement according to the task to be executed, the relevant parameters in the transport task requirement are obtained to calculate the takeoff weight W of the task to be executed. 任务需求 The transport execution unit combines the transport aircraft parameters, airport conditions and airworthiness requirements to calculate the maximum weight W of the transport aircraft for takeoff at the airport according to airworthiness requirements. 结构，适航 , determine the takeoff weight W 任务需求 With maximum weight W 结构，适航 size.

[0062] The maximum weight W of a transport aircraft taking off from this airport without considering airworthiness requirements 结构，机场 .See Figure 1 .

[0063] If W 结构，适航 ≥W 任务需求 , indicating that the transport aircraft mission capability exceeds or is equal to the mission capability to be performed. 任务需求 Just design the flight mission and the design is complete.

[0064] If W 结构，适航 <W 任务需求, indicating that the mission capability of the transport aircraft is lower than the mission capability to be performed under the condition of airworthiness. 结构，机场 and W 任务需求 Relationship, if W 结构，机场 <W 任务需求 , the task cannot be executed and the design ends. 结构，机场 ≥W 任务需求 >W 结构，适航 , and the importance of the mission to be performed reaches the set level and receives relevant authorization, then the transport aircraft will take off with overweight. The level of importance of the mission to be performed is determined according to actual needs.

[0065] Step S300: When the transport aircraft takes off with an overweight load, the risk time T of the takeoff process is evaluated according to the design parameters of the transport aircraft and the importance of the mission to be performed. 风险 ; When based on the risk time T 风险 When it is determined that the takeoff can be released, proceed to the next step.

[0066] Risk time T 风险 It refers to the time during which the transport aircraft cannot guarantee safety if one of the engines fails. Risk time T 风险 As a quantitative description of the risks involved in breaking the original airworthiness requirements.

[0067] Preferably, when one engine fails during overweight takeoff, the transport aircraft may be in a dangerous state or a safe state. The sum of the time process during which one engine failure of the transport aircraft causes danger to the transport aircraft is called the dangerous time T 危险 Risk time T 风险 and the dangerous time T 危险 If the risk time T 风险 ≥ Dangerous time T 危险 , then the risk of overweight takeoff is considered controllable and the takeoff can be released. 风险 <Dangerous time T 危险 , then it is determined that the risk of the overweight takeoff process is uncontrollable and the takeoff cannot be allowed.

[0068] Step S400, determine W 任务需求 Can the aircraft take off and clear obstacles with the takeoff weight? If so, proceed to the next step.

[0069] Specifically, according to the actual obstacle clearance requirements of the airport, the obstacle clearance time under full engine conditions is first calculated, and then the result of one engine failure at any time point during the takeoff obstacle clearance process is evaluated, where the time when the obstacle clearance cannot be taken off is T 危险，越障 , T 危险 =T 危险，越障 . T 危险 Greater than T 风险, indicating that the task cannot be executed and the design is over. 危险 Not greater than T 风险 , you can cross the obstacle and enter the next step. For the specific calculation process, see Figure 2 .

[0070] Step S500, determine W 任务需求 Can the aircraft take off and climb with the takeoff weight? If so, proceed to the next step.

[0071] Specifically, according to the actual climb requirements of the airport, the climb time under full engine conditions is first calculated, and then the result of one engine failure at any time point during the takeoff and climb process is evaluated, where the time when the takeoff and climb cannot be completed is T 危险，爬升 , T 危险 =T 危险，爬升 +T 危险，越障 . T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over. 危险 Not greater than T 风险 , you can climb and proceed to the next step.

[0072] Step S600, determine W 任务需求 Can the takeoff weight be taken off and roll? If so, it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0073] Specifically, according to the actual taxiing requirements of the airport, the taxiing time under full-engine conditions is first calculated, and then the result of an engine failure at any time point during the takeoff taxiing process is evaluated. The time when the transport aircraft cannot be guaranteed to be safe is T 危险，滑跑 , T 危险 =T 危险，滑跑 +T 危险，爬升 +T 危险，越障 , T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over. 危险 Not greater than T 风险 , it can taxi, and it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0074] Through the above design, by comparing weight and time, combined with the current take-off scene conditions, accurate and quantitative conditions for take-off can be determined, realizing a stable, long-term, and large-scale air transport determination process. At the same time, it can accurately determine the failure of one engine, and accurately determine whether the transport aircraft can take off under the condition of one engine failure through time, which has a wide range of applications.

[0075] As a specific implementation, it also includes a transport aircraft take-off overweight determination system considering the risk time, which adopts the above design and includes a precondition determination module, a take-off weight determination module, a risk time assessment module, a take-off obstacle determination module, a take-off climb determination module and a take-off run determination module.

[0076] The precondition determination module can determine the transport aircraft research object, a given airport, and the tasks to be performed for the corresponding transport aircraft;

[0077] The takeoff weight determination module can obtain the relevant parameters in the transport task requirements and calculate the takeoff weight W of the task to be executed after the task initiator issues the transport task requirements according to the task to be executed. 任务需求 The transport execution unit calculates the maximum weight W of the transport aircraft taking off at the airport according to the airworthiness requirements based on the transport aircraft parameters, airport conditions and airworthiness requirements. 结构，适航 , determine the takeoff weight W 任务需求 With maximum weight W 结构，适航 The size of W 结构，适航 <W 任务需求 , then further determine W 结构，机场 and W 任务需求 Relationship, if W 结构，机场 ≥W 任务需求 >W 结构，适航 , and when the mission importance reaches the set level and receives relevant authorization, the transport aircraft will be carried out with overweight takeoff; W 结构，机场 The maximum weight of a transport aircraft that can take off from a certain airport without considering airworthiness requirements;

[0078] The risk time assessment module can assess the risk time T of the take-off process when the transport aircraft takes off with overweight according to the design parameters of the transport aircraft and the importance of the mission to be performed. 风险 ; When based on the risk time T 风险 When it is determined that the takeoff can be released, proceed to the next step;

[0079] The takeoff obstacle determination module can determine W 任务需求 Can the aircraft take off and clear obstacles with the takeoff weight? If so, proceed to the next step;

[0080] The takeoff climb determination module can determine W 任务需求 Can the aircraft take off and climb with the takeoff weight? If so, proceed to the next step;

[0081] The takeoff run determination module can determine W 任务需求 Can the takeoff weight be taken off and roll? If so, it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0082] Preferably, if W 结构，适航 ≥W 任务需求 , according to W任务需求 Just design the flight mission and the design is complete.

[0083] Preferably, if W 结构，机场 <W 任务需求 , the task cannot be executed and the design ends.

[0084] Preferably, according to the risk time T 风险 The specific method for judging whether the takeoff can be released is: the sum of the time process of the transport aircraft being in danger due to the failure of one engine is called the danger time T 危险 ; Risk time T 风险 and the dangerous time T 危险 If the risk time T 风险 ≥ Dangerous time T 危险 , then the risk of overweight takeoff is considered controllable and the takeoff can be released; if the risk time T 风险 <Dangerous time T 危险 , then it is determined that the risk of the overweight takeoff process is uncontrollable and the takeoff cannot be allowed.

[0085] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can take off and clear obstacles is as follows: first calculate the obstacle clearance time under full engine conditions according to the actual obstacle clearance requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and clearing process, where the time when the aircraft cannot take off and clear obstacles is T. 危险，越障 , T 危险 =T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to overcome obstacles and proceed to the next step.

[0086] Preferably, it is determined that W 任务需求 The specific method to determine whether the takeoff weight can take off and climb is as follows: first calculate the climb time under full engine conditions according to the actual climb requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and climb process, where the time when the takeoff and climb cannot be taken off is T. 危险，爬升 , T 危险 =T 危险，爬升 +T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to climb and move to the next step.

[0087] Preferably, it is determined that W 任务需求The specific method to determine whether the takeoff weight can be used for takeoff and rolling is as follows: according to the actual rolling requirements of the airport, first calculate the rolling time under full-engine conditions, and then evaluate the result of one engine failure at any time point during the takeoff and rolling process. The time when the transport aircraft cannot be guaranteed to be safe is T. 危险，滑跑 , T 危险 =T 危险，滑跑 +T 危险，爬升 +T 危险，越障 , T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , it can taxi, and it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

[0088] Finally, it should be noted that: the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0089] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining whether a transport aircraft takes off with excess weight in consideration of risk time, characterized in that: include: Determine the research object of transport aircraft, given airport, and given the corresponding transport aircraft's tasks to be performed; After the mission initiator issues a transport mission requirement based on the mission to be executed, it obtains the relevant parameters in the transport mission requirement and calculates the takeoff weight W of the mission to be executed. 任务需求 The transport execution unit calculates the maximum weight W of the transport aircraft taking off at the airport according to the airworthiness requirements based on the transport aircraft parameters, airport conditions and airworthiness requirements. 结构，适航 , determine the takeoff weight W 任务需求 With maximum weight W 结构，适航 The size of W 结构，适航 <W 任务需求 , then further determine W 结构，机场 and W 任务需求 Relationship, if W 结构，机场 ≥W 任务需求 >W 结构，适航 , and when the mission importance reaches the set level and receives relevant authorization, the transport aircraft will be carried out with overweight takeoff; W 结构，机场 The maximum weight of a transport aircraft that can take off from a certain airport without considering airworthiness requirements; When a transport aircraft takes off with an overweight load, the risk time T of the takeoff process is evaluated based on the design parameters of the transport aircraft and the importance of the mission to be performed. 风险 ; When based on the risk time T 风险 When it is determined that the takeoff can be released, proceed to the next step; Judge W 任务需求 Can the aircraft take off and clear obstacles with the takeoff weight? If so, proceed to the next step; Judge W 任务需求 Can the aircraft take off and climb with the takeoff weight? If so, proceed to the next step; Judge W 任务需求 Can the takeoff weight be taken off and roll? If so, it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

2. The method for determining whether a transport aircraft takes off with excess weight in consideration of risk time as claimed in claim 1, characterized in that: If W 结构，适航 ≥W 任务需求 , according to W 任务需求 Just design the flight mission and the design is complete.

3. The method for determining whether a transport aircraft takes off with excess weight in consideration of risk time as claimed in claim 1, characterized in that: If W 结构，机场 <W 任务需求 , the task cannot be executed and the design ends.

4. The method for determining whether a transport aircraft takes off with excess weight in consideration of risk time as claimed in claim 1, characterized in that: According to the risk time T 风险 The specific method for judging whether the takeoff can be released is: the sum of the time process of the transport aircraft being in danger due to the failure of one engine is called the danger time T 危险 ; Risk time T 风险 and the dangerous time T 危险 If the risk time T 风险 ≥ Dangerous time T 危险 , then the risk of overweight takeoff is considered controllable and the takeoff can be released; if the risk time T 风险 <Dangerous time T 危险 , then it is determined that the risk of the overweight takeoff process is uncontrollable and the takeoff cannot be allowed.

5. The method for determining whether a transport aircraft takes off with excess weight in consideration of risk time as claimed in claim 1, characterized in that: Judge W 任务需求 The specific method to determine whether the takeoff weight can take off and clear obstacles is as follows: according to the actual obstacle clearance requirements of the airport, first calculate the obstacle clearance time under full-engine conditions, and then evaluate the result of one engine failure at any time point during the takeoff and clearing process. The time when the aircraft cannot take off and clear obstacles is T 危险，越障 , T 危险 =T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to overcome obstacles and proceed to the next step.

6. The method for determining whether a transport aircraft takes off with excess weight in consideration of risk time as claimed in claim 1, characterized in that: Judge W 任务需求 The specific method to determine whether the takeoff weight can take off and climb is as follows: first calculate the climb time under full engine conditions according to the actual climb requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and climb process, where the time when the takeoff and climb cannot be taken off is T. 危险，爬升 , T 危险 =T 危险，爬升 +T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to climb and move to the next step.

7. The method for determining whether a transport aircraft takes off with excess weight in consideration of risk time as claimed in claim 1, characterized in that: Judge W 任务需求 The specific method to determine whether the takeoff weight can be used for takeoff and rolling is as follows: according to the actual rolling requirements of the airport, first calculate the rolling time under full-engine conditions, and then evaluate the result of one engine failure at any time point during the takeoff and rolling process. The time when the transport aircraft cannot be guaranteed to be safe is T. 危险，滑跑 , T 危险 =T 危险，滑跑 +T 危险，爬升 +T 危险，越障 , T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , it can taxi, and it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

8. A transport aircraft take-off determination system considering risk time and overweight, using the determination method as claimed in any one of claims 1 to 7, characterized in that: It includes a precondition determination module, a takeoff weight determination module, a risk time assessment module, a takeoff obstacle determination module, a takeoff climb determination module and a takeoff run determination module; The precondition determination module can determine the transport aircraft research object, a given airport, and the tasks to be performed for the corresponding transport aircraft; The takeoff weight determination module can obtain the relevant parameters in the transport task requirements and calculate the takeoff weight W of the task to be executed after the task initiator issues the transport task requirements according to the task to be executed. 任务需求 The transport execution unit calculates the maximum weight W of the transport aircraft taking off at the airport according to the airworthiness requirements based on the transport aircraft parameters, airport conditions and airworthiness requirements. 结构，适航 , determine the takeoff weight W 任务需求 With maximum weight W 结构，适航 The size of W 结构，适航 <W 任务需求 , then further determine W 结构，机场 and W 任务需求 Relationship, if W 结构，机场 ≥W 任务需求 >W 结构，适航 , and when the mission importance reaches the set level and receives relevant authorization, the transport aircraft will be carried out with overweight takeoff; W 结构，机场 The maximum weight of a transport aircraft that can take off from a certain airport without considering airworthiness requirements; The risk time assessment module can assess the risk time T of the take-off process when the transport aircraft takes off with overweight according to the design parameters of the transport aircraft and the importance of the mission to be performed. 风险 ; When based on the risk time T 风险 When it is determined that the takeoff can be released, proceed to the next step; The takeoff obstacle determination module can determine W 任务需求 Can the aircraft take off and clear obstacles with the takeoff weight? If so, proceed to the next step; The takeoff climb determination module can determine W 任务需求 Can the aircraft take off and climb with the takeoff weight? If so, proceed to the next step; The takeoff run determination module can determine W 任务需求 Can the takeoff weight be taken off and roll? If so, it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

9. The transport aircraft take-off determination system considering risk time and overweight as claimed in claim 8, characterized in that: If W 结构，适航 ≥W 任务需求 , according to W 任务需求 Just design the flight mission and the design is complete.

10. The transport aircraft take-off determination system considering risk time and overweight as claimed in claim 8, characterized in that: If W 结构，机场 <W 任务需求 , the task cannot be executed and the design ends.

11. The transport aircraft take-off determination system considering risk time and overweight as claimed in claim 8, characterized in that: According to the risk time T 风险 The specific method for judging whether the takeoff can be released is: the sum of the time process of the transport aircraft being in danger due to the failure of one engine is called the danger time T 危险 ; Risk time T 风险 and the dangerous time T 危险 If the risk time T 风险 ≥ Dangerous time T 危险 , then the risk of overweight takeoff is considered controllable and the takeoff can be released; if the risk time T 风险 <Dangerous time T 危险 , then it is determined that the risk of the overweight takeoff process is uncontrollable and the takeoff cannot be allowed.

12. The transport aircraft take-off determination system considering risk time and overweight as claimed in claim 8, characterized in that: Judge W 任务需求 The specific method to determine whether the takeoff weight can take off and clear obstacles is as follows: according to the actual obstacle clearance requirements of the airport, first calculate the obstacle clearance time under full-engine conditions, and then evaluate the result of one engine failure at any time point during the takeoff and clearing process. The time when the aircraft cannot take off and clear obstacles is T 危险，越障 , T 危险 =T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to overcome obstacles and proceed to the next step.

13. The transport aircraft take-off determination system considering risk time and overweight as claimed in claim 8, characterized in that: Judge W 任务需求 The specific method to determine whether the takeoff weight can take off and climb is as follows: first calculate the climb time under full engine conditions according to the actual climb requirements of the airport, and then evaluate the result of one engine failure at any time point during the takeoff and climb process, where the time when the takeoff and climb cannot be taken off is T. 危险，爬升 , T 危险 =T 危险，爬升 +T 危险，越障 ; T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , able to climb and move to the next step.

14. The transport aircraft take-off determination system considering risk time and overweight as claimed in claim 8, characterized in that: Judge W 任务需求 The specific method to determine whether the takeoff weight can be used for takeoff and rolling is as follows: according to the actual rolling requirements of the airport, first calculate the rolling time under full-engine conditions, and then evaluate the result of one engine failure at any time point during the takeoff and rolling process. The time when the transport aircraft cannot be guaranteed to be safe is T. 危险，滑跑 , T 危险 =T 危险，滑跑 +T 危险，爬升 +T 危险，越障 , T 危险 Greater than T 风险 , indicating that the task cannot be executed and the design is over; T 危险 Not greater than T 风险 , it can taxi, and it is determined that the transport aircraft is overweight for takeoff and can be released, and the design is completed.

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