A method of determining a weight and balance control level for a helicopter onboard product

Abstract

The present application belongs to the technical field of helicopter weight control, and particularly relates to a method for determining the weight and gravity center control level of a helicopter airborne product, comprising the following steps: step one, determining the weight maturity level of the airborne product; step two, determining the weight overweight risk level of the helicopter according to the helicopter weight; step three, calculating the proportion of the airborne product weight relative to the helicopter weight, and determining the airborne product weight level; step four, determining the airborne product weight control level according to the levels of steps one, two and three, and determining whether the airborne product is a weight control key part or a general part according to the airborne product weight control level and a preset weight control level threshold; step five, determining the gravity center overrun risk level of the helicopter according to the gravity center of the helicopter; step six, calculating the influence of the airborne product on the gravity center of the helicopter, and determining the airborne product gravity center influence level; and step seven, determining the airborne product gravity center control level according to the levels of steps one, five and six, and determining whether the airborne product is a gravity center control key part or a general part according to the airborne product gravity center control level and a preset gravity center control level threshold.

Description

Technical Field

[0001] This invention belongs to the field of helicopter weight control technology, and in particular relates to a method for determining the weight center of gravity control level of helicopter airborne products. Background Technology

[0002] Weight control is one of the key issues in helicopter development, and its success or failure directly affects whether the helicopter's flight performance can meet the expected targets. Since airborne components account for more than 50% of the helicopter's weight, their weight control is particularly crucial to the overall weight control of the aircraft.

[0003] Helicopters carry a wide variety of onboard products, ranging in weight from a few grams to hundreds or thousands of kilograms. Therefore, applying the same effort and methods to weight control for all onboard products is clearly inappropriate. It is therefore crucial to implement weight control measures based on the importance and risk of each onboard product's impact on the helicopter's weight and balance. This means applying strict and comprehensive weight control to onboard products with significant impact and risk, and implementing less stringent weight control for those with less impact and risk. Summary of the Invention

[0004] This invention addresses the problem that existing technologies use the same effort and methods for weight control of all airborne products, which is obviously unsuitable for products with greater weight. Therefore, the purpose of this invention is to analyze the weight and balance risks of helicopters, the impact of airborne products on the weight and balance of helicopters, and the weight maturity of airborne products, and to use an index evaluation method to divide the weight control of airborne products into critical components and general components, and select the weight control content for the airborne product accordingly.

[0005] The present invention is implemented using the following technical solution.

[0006] A method for determining the weight center of gravity control level of helicopter-borne products includes the following steps:

[0007] Step 1: Determine the weight maturity level of airborne products;

[0008] Step 2: Determine the overweight risk level of this type of helicopter based on its weight;

[0009] Step 3: Determine the weight class of the airborne product by calculating the ratio of the computer's weight to the helicopter's weight.

[0010] Step 4: Based on the levels in Step 1, Step 2 and Step 3, determine the weight control level of the airborne product. Based on the weight control level of the airborne product and the preset weight control level threshold, determine whether the airborne product is a key component or a general component for weight control.

[0011] Step 5: Determine the risk level of the helicopter's center of gravity exceeding the limit based on the helicopter's center of gravity.

[0012] Step Six: Determine the impact level of the computer-borne product on the helicopter's center of gravity;

[0013] Step 7: Based on the levels in Step 1, Step 5 and Step 6, determine the center of gravity control level of the airborne product. Based on the center of gravity control level of the airborne product and the preset center of gravity control level threshold, determine whether the airborne product is a critical component or a general component for center of gravity control.

[0014] Furthermore, step one specifically involves:

[0015]

[0016] Furthermore, step two specifically involves:

[0017]

[0018] Furthermore, step three specifically involves:

[0019]

[0020]

[0021] Furthermore, step four specifically involves:

[0022] The weight control level for airborne products is determined as: Helicopter's weight overweight risk level * Airborne product weight level * Airborne product weight maturity level;

[0023] If the weight control level of an airborne product is less than or equal to the preset weight control level threshold, the airborne product is determined to be a general weight control component.

[0024] If the weight control level of an airborne product exceeds the preset weight control level threshold, the airborne product is identified as a key component for weight control.

[0025] Furthermore, step five specifically involves:

[0026]

[0027] Furthermore, step six specifically involves:

[0028]

[0029] Furthermore, step seven specifically involves:

[0030] The center of gravity control level of airborne products is determined as: risk level of helicopter center of gravity exceeding limit * impact level of airborne product center of gravity * weight maturity level of airborne products;

[0031] If the center of gravity control level of an airborne product is less than or equal to the preset center of gravity control level threshold, the airborne product is determined to be a general component for center of gravity control.

[0032] If the center of gravity control level of the airborne product is greater than the preset center of gravity control level threshold, the airborne product is identified as a key component for center of gravity control.

[0033] The technical solution of this invention proposes a method for determining the weight and center of gravity control level of helicopter airborne products. By analyzing the weight and balance risk of the helicopter, the impact of airborne products on the helicopter's weight and center of gravity, and the weight maturity of the airborne products, an index evaluation method is used to determine the weight control level of the airborne products, and corresponding weight control methods are adopted to achieve precise control of the weight of the airborne products. Attached Figure Description

[0034] Figure 1 This is a flowchart illustrating a method for determining the weight center of gravity control level of helicopter airborne products, provided as an embodiment of the present invention. Detailed Implementation

[0035] The technical solution of the present invention will be described in detail above with reference to the accompanying drawings.

[0036] The technical solution of this invention analyzes the weight and balance risks of helicopters, the impact of airborne products on the weight and balance of helicopters, and the weight maturity of airborne products. It adopts an index evaluation method to divide the weight control of airborne products into critical components and general components, and selects the weight control content of the airborne product accordingly.

[0037] like Figure 1 As shown, an embodiment of the present invention provides a method for weight control of helicopter airborne products, comprising the following steps:

[0038] Step 1: Determine the weight maturity level of airborne products;

[0039] Step 2: Determine the overweight risk level of this type of helicopter based on its weight;

[0040] Step 3: Determine the weight class of the airborne product by calculating the ratio of the computer's weight to the helicopter's weight.

[0041] Step 4: Based on the levels in Step 1, Step 2 and Step 3, determine the weight control level of the airborne product. Based on the weight control level of the airborne product and the preset weight control level threshold, determine whether the airborne product is a key component or a general component for weight control.

[0042] Step 5: Determine the risk level of center of gravity exceeding the limit for this type of helicopter based on its center of gravity.

[0043] Step Six: Determine the impact level of the computer-borne products on the overall center of gravity of the aircraft.

[0044] Step 7: Based on the levels in Step 1, Step 5 and Step 6, determine the center of gravity control level of the airborne product. Based on the center of gravity control level of the airborne product and the preset center of gravity control level threshold, determine whether the airborne product is a critical component or a general component for center of gravity control.

[0045] Step 8: Select the appropriate airborne product weight control content based on the key or general components in Steps 4 and 7.

[0046] The preset weight control level threshold is 8.

[0047] The preset center of gravity control level threshold is 8.

[0048] The following is the classification and explanation:

[0049]

[0050]

[0051] The following are the criteria for determining critical / general components:

[0052]

[0053] The following are the control contents for critical / general components:

[0054] Detailed implementation method:

[0056] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be described in more detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0057] like Figure 1 As shown, taking the weight control of a certain type of airborne product as an example, a method for controlling the weight of a helicopter airborne product specifically includes the following steps:

[0058] Step 1: Based on the weight status of airborne products, determine the maturity level of airborne products: for existing airborne products with measured values, for modified airborne products with predictable changes, and for newly developed airborne products with only estimated weight values.

[0059]

[0060] Step two: Based on the target weight value and theoretical weight value of the helicopter, conduct a weight overload risk analysis to determine the weight risk level of the helicopter.

[0061]

[0062] Step 3: Calculate the weight ratio of airborne products to helicopter weight to determine the weight class of airborne products.

[0063]

[0064] Step 4: Based on the weight maturity level of airborne products, the weight risk level of helicopters, and the weight level of airborne products, use the index evaluation method to determine whether the airborne product is a critical component or a general component for weight control. If the product of the three levels is less than or equal to 8, it is judged as a general component; if the product of the three levels is greater than 8, it is judged as a critical component.

[0065]

[0066] Step 5: Determine the risk level of the helicopter's center of gravity exceeding the limit based on the helicopter's center of gravity range and actual usage center of gravity.

[0067]

[0068] Step 6: Determine the impact of the computer-borne product on the helicopter's center of gravity, and the level of impact of the airborne product on the front / rear center of gravity.

[0069]

[0070] Step 7: Determine whether the airborne product is a critical component or a general component for center of gravity control based on the airborne product weight maturity level, the helicopter center of gravity exceedance risk level, and the airborne product center of gravity impact level. If the product of the three levels is less than or equal to 8, it is judged as a general component; if the product of the three levels is greater than 8, it is judged as a critical component.

[0071]

[0072] Step 8: Based on the results determined in Steps 4 and 7, the alternator is a key component for both weight control and center of gravity control, while the radio altimeter and driver's seat are general components. Select the appropriate weight control measures based on this result.

[0073]

[0074] The technical solution of this invention is to determine the weight control level of airborne products and select the appropriate weight control method by analyzing the weight and balance risks of helicopters, the impact of airborne products on the weight and balance of helicopters, and the weight maturity of airborne products.

Claims

1. A method for determining the weight center of gravity control level of helicopter-borne products, characterized in that, Includes the following steps: Step 1: Determine the weight maturity level of airborne products; Step 2: Determine the overweight risk level of this type of helicopter based on its weight; Step 3: Determine the weight class of the airborne product by calculating the ratio of the computer's weight to the helicopter's weight. Step 4: Based on the levels in Step 1, Step 2 and Step 3, determine the weight control level of the airborne product. Based on the weight control level of the airborne product and the preset weight control level threshold, determine whether the airborne product is a key component or a general component for weight control. Step 5: Determine the risk level of the helicopter's center of gravity exceeding the limit based on the helicopter's center of gravity. Step Six: Determine the impact level of the computer-borne product on the helicopter's center of gravity; Step 7: Based on the levels in Step 1, Step 5 and Step 6, determine the center of gravity control level of the airborne product. Based on the center of gravity control level of the airborne product and the preset center of gravity control level threshold, determine whether the airborne product is a critical component or a general component for center of gravity control.

2. The method for determining the weight center of gravity control level of helicopter-borne products according to claim 1, characterized in that, Step one is as follows:

3. The method for determining the weight center of gravity control level of helicopter airborne products according to claim 2, characterized in that, Step two is as follows:

4. The method for determining the weight center of gravity control level of helicopter airborne products according to claim 3, characterized in that, Step three specifically involves:

5. The method for determining the weight center of gravity control level of helicopter airborne products according to claim 4, characterized in that, Step four is as follows: The weight control level for airborne products is determined as: Helicopter's weight overweight risk level * Airborne product weight level * Airborne product weight maturity level; If the weight control level of an airborne product is less than or equal to the preset weight control level threshold, the airborne product is determined to be a general weight control component. If the weight control level of an airborne product exceeds the preset weight control level threshold, the airborne product is identified as a key component for weight control.

6. The method for determining the weight center of gravity control level of helicopter-borne products according to claim 1, characterized in that, Step five is as follows:

7. The method for determining the weight center of gravity control level of helicopter airborne products according to claim 6, characterized in that, Step six is ​​as follows:

8. The method for determining the weight center of gravity control level of helicopter airborne products according to claim 7, characterized in that, Step seven is as follows: The center of gravity control level of airborne products is determined as: risk level of helicopter center of gravity exceeding limit * impact level of airborne product center of gravity * weight maturity level of airborne products; If the center of gravity control level of an airborne product is less than or equal to the preset center of gravity control level threshold, the airborne product is determined to be a general center of gravity control component. If the center of gravity control level of the airborne product is greater than the preset center of gravity control level threshold, the airborne product is identified as a key component for center of gravity control.

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