Vibration and buffeting test flight method for troposphere manned airship

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Through the vibration and vibration test flight test methods of the tropospheric manned airship, the gap in the domestic tropospheric airship model qualification certification test flight technology was solved, and a repeatable and standardized test flight plan was realized, which improved the test flight efficiency and quality, and ensured the safety of test flights.

CN119389452APending Publication Date: 2025-02-07CHINA SPECIAL TYPE FLIER RES INST

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Patent Information

Application Number: CN202411623654.X
Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner
Filing Date: 2024-11-14
Publication Date: 2025-02-07

AI Technical Summary

Technical Problem

The test flight technology and methods for domestic tropospheric airship models are basically blank, and there is a lack of repeatable and standardized test flight requirements, which affects the efficiency and quality of the test flight of the manned airship, and poses safety hazards.

Method used

Provide a vibration and vibration test flight method for a tropospheric manned airship, including selecting airship test conditions, climbing to a set height, adjusting the throttle to maintain maximum continuous power and vector angle 0°, performing flat flight, drop and airbag pressure control Then, we can form unified verification requirements.

Benefits of technology

The repeatable and standardized test flight plan for the vibration and vibration models of tropospheric manned airships has been realized, which has improved the test flight efficiency and quality and ensured the safety of test flights.

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Abstract

The invention discloses a vibration and buffeting flight test method for a troposphere manned airship. The method comprises the following steps: selecting airship test conditions; the airship climbs to the set field height and keeps level flight; an accelerator is adjusted till the engine keeps the maximum continuous power, the vector angle is 0 degree, the airship flies horizontally, and the set time is kept; the engine is kept in the maximum continuous power and vector angle 0-degree state, the rod is slowly pushed till the airship descending rate reaches the set value, and the set time is kept; keeping the engine in the state of maximum continuous power and vector angle of 0 degree, continuously and slowly pushing the rod, keeping the pressure of the airship air bag in a specified range, and keeping the state for set time when the airship descending rate reaches the maximum allowable value; and closing the accelerator until the airspeed of the airship is close to a cruise state, and meanwhile, changing dive by matching with the side rod to keep the airship to fly flatly. The test flight efficiency and the test flight quality of vibration and buffeting of the troposphere manned airship with the vector propulsion system are improved, and the test flight safety is guaranteed.

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Description

Technical Field

[0001] The invention belongs to the technical field of flight test, and in particular relates to a vibration and buffeting test flight method for a tropospheric manned airship. Background Art

[0002] So far, the domestic flight test technology and methods for tropospheric airship type certification flight test are basically blank. It is necessary to implement repeatable and standardized flight test requirements for airship flight test, standardize the flight test weight center of gravity, flight test procedures, and flight test methods, form unified verification requirements, improve the efficiency and quality of manned airship flight test, and ensure flight test safety. Summary of the invention

[0003] Purpose of the Invention

[0004] In order to improve the test flight efficiency and quality of a manned airship, the present invention provides a vibration and buffeting test flight method for a tropospheric manned airship.

[0005] Inventing technical solutions

[0006] A vibration and buffeting test flight method for a tropospheric manned airship comprises the following steps:

[0007] Step 1: Select the airship test conditions;

[0008] Step 2: The airship climbs to the set field height and maintains level flight;

[0009] Step 3: Adjust the throttle until the engine maintains maximum continuous power and the vector angle is 0°, and the airship flies level for the set time;

[0010] Step 4: Keep the engine at maximum continuous power and vector angle 0°, slowly push the stick until the airship descent rate reaches the set value, and maintain the set time;

[0011] Step 5: Keep the engine at maximum continuous power and vector angle 0°, continue to push the stick slowly, keep the airbag pressure within the specified range, and the airship descent rate reaches the maximum allowable value, and maintain this state for the set time; reduce the throttle until the airship airspeed approaches the cruising state, and cooperate with the side stick to change out of the dive and keep the airship in level flight.

[0012] Preferably, in the first step, the maximum static weight and the front center of gravity of the airship are selected as the test conditions.

[0013] Preferably, the field height set in the second step is about 1000m.

[0014] Preferably, the time set in the third step is about 10 seconds.

[0015] Preferably, the set value in the fourth step is about 2 m / s.

[0016] Preferably, the time set in the fourth step is 10s.

[0017] Preferably, the time set in the fifth step is 20s.

[0018] Preferably, in the fifth step, the airship is slowly changed to level flight with the cooperation of the side stick.

[0019] Preferably, slow means the speed is no greater than 5° / s.

[0020] Preferably, the slow recovery process with the side rod takes 4s to 10s.

[0021] Advantages of the present invention: The present invention fills the gap in the vibration and buffeting type certification flight test method for a tropospheric manned airship with a vector propulsion system, realizes a repeatable and standardized flight test plan, standardizes the flight test weight center of gravity, flight test procedures, and flight test methods, forms unified verification requirements, improves the vibration and buffeting flight test efficiency and flight test quality of a tropospheric manned airship with a vector propulsion system, and ensures flight test safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a flow chart of a vibration and buffeting test flight method for a tropospheric manned airship. DETAILED DESCRIPTION

[0023] The present invention is achieved through the following technical solutions.

[0024] The implementation process of the vibration and buffeting test flight method for tropospheric manned airship is as follows Figure 1 As shown:

[0025] The following is a detailed description with examples:

[0026] Implementation example: The vibration and buffeting test flight process of a manned airship is as follows:

[0027] 1) Before the test, set the weight, center of gravity position, etc. according to the test requirements;

[0028] 2) The airship takes off normally and climbs to a height of about 1000m;

[0029] 3) With the vector angle at 0° and the throttle at maximum, the airship reaches an airspeed of 80km / h and flies level for 10 seconds;

[0030] 4) Keep the throttle unchanged and slowly push the stick until the airship descends at a rate of about 2m / s, and maintain this position for 10s;

[0031] 5) Keep the throttle unchanged and continue to push the stick slowly. The airbag pressure of the airship is maintained at a stable descent rate of 300Pa~335Pa, the descent rate is 4m / s~4.5m / s, and the indicated airspeed is maintained at 84.5km / h~86km / h. Maintain this state for 23s;

[0032] 6) The test pilot closed the throttle until the indicated airspeed was about 60 km / h, and used the side stick to slowly change the airship to level flight, adjusted the airship's status, and landed according to normal procedures, completing the test flight.

[0033] The protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope of the present invention. If these changes and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these changes and modifications.

Claims

1. A vibration and buffeting test flight method for a tropospheric manned airship, characterized in that: The steps include: Step 1: Select the airship test conditions; Step 2: The airship climbs to the set field height and maintains level flight; Step 3: Adjust the throttle until the engine maintains maximum continuous power and the vector angle is 0°, and the airship flies level for the set time; Step 4: Keep the engine at maximum continuous power and vector angle 0°, slowly push the stick until the airship descent rate reaches the set value, and maintain the set time; Step 5: Keep the engine at maximum continuous power and vector angle 0°, continue to push the stick slowly, keep the airbag pressure within the specified range, and the airship descent rate reaches the maximum allowable value, and maintain this state for the set time; reduce the throttle until the airship airspeed approaches the cruising state, and cooperate with the side stick to change out of the dive and keep the airship in level flight.

2. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 1, characterized in that: The first step is to select the maximum static weight and forward center of gravity of the airship as the test conditions.

3. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 1, characterized in that: The field height set in the second step is about 1000m.

4. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 1, characterized in that: The time set in the third step is about 10s.

5. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 1, characterized in that: In the fourth step, the setting value is about 2m / s.

6. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 1, characterized in that: The time set in the fourth step is 10s.

7. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 1, characterized in that: The time set in step 5 is 20s.

8. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 1, characterized in that: In the fifth step, use the side stick to slowly change the airship to level flight.

9. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 8, characterized in that: Slow means the speed is no greater than 5° / s.

10. A vibration and buffeting test flight method for a tropospheric manned airship according to claim 8, characterized in that: The process of slowly recovering with the help of the side stick takes 4 to 10 seconds.