A Method of Determining the Flight Angle of Attack of an Aircraft Optimizing Thermal Environment
A determination method and technology for aircraft, applied in the field of flight control of aircraft, can solve problems such as high cost, flight mission failure, harsh thermal environment, etc., and achieve the effect of reducing pressure
Active Publication Date: 2020-11-20
BEIJING LINJIN SPACE AIRCRAFT SYST ENG INST +1
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Problems solved by technology
[0002] When an aircraft flies at high speed, the thermal environment is harsh, and there is a risk that the surface of the aircraft will burn through and cause the flight mission to fail. In the prior art, anti-heat insulation materials with better anti-heat insulation performance are generally applied to the surface of each key part of the aircraft; there is The disadvantage is that the cost is high, and there is still the risk of the anti-insulation material being burned through during the long-term flight
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[0030] A method for determining the flight angle of attack of an aircraft that makes the thermal environment optimal, the steps of the method comprising:
[0031] Step 1: Divide the mission profile to obtain the combination of altitude and Mach number;
[0032] The specific method is: divide the flight mission profile according to the combination of altitude and Mach number, the altitude and Mach number are continuously changing during the flight, the purpose of the division is to discretize the altitude and Mach number during the flight; the division principle is from The starting height of the initial state is taken every 10km, and the Mach number is taken every 1; for example, the results of aircraft mission profile division according to altitude and Mach number (Ma) are: 10km_Ma1, 20km_Ma2, 20km_Ma3, 30km_Ma3, 40km_Ma4, 40km_Ma5, etc. ;
[0033] Step 2: Collect and organize test data;
[0034] Collect the previous flight test data and ground test data of the aircraft, ma...
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The invention relates to an aircraft flight AOA (angle of attack) determining method capable of enabling a thermal environment to be optimum, and the method comprises the steps: improving the thermalenvironment of the surface of each key part of an aircraft through changing the AOA of the aircraft, and enabling the thermal environment of the surface of each key part of the aircraft to be in an optimal state, i.e., the minimum heat flow in the thermal environment. The invention belongs to the technical field of aircraft flight control. According to the invention, an intelligent AOA profile determining method capable of enabling the thermal environment to be optimum is provided, and the method takes the optimal thermal environment as the target. The AOA in one flight state is solved, thereby reducing the pressure on a thermal isolation system, and achieving the intelligent flight control suitable for a complex flight environment.
Description
technical field [0001] The invention relates to a method for determining the flight angle of attack of an aircraft that optimizes the thermal environment. The method improves the thermal environment on the surface of each key part of the aircraft by changing the flight angle of attack of the aircraft, so that the thermal environment on the surface of each key part of the aircraft is at its optimum. The optimal state, that is, the minimum heat flow in the thermal environment, belongs to the technical field of flight control of aircraft. Background technique [0002] When an aircraft flies at high speed, the thermal environment is harsh, and there is a risk that the surface of the aircraft will burn through and cause the flight mission to fail. In the prior art, anti-heat insulation materials with better anti-heat insulation performance are generally applied to the surface of each key part of the aircraft; The disadvantage is that the cost is high, and there is still the risk ...
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IPC IPC(8): G05D1/10
CPCG05D1/101G06F30/15Y02T90/00
Inventor 陈安宏姜智超杨飞尘军肖振李欣金娜底亚峰孙宝亮张星肖文刘全军王颖
Owner BEIJING LINJIN SPACE AIRCRAFT SYST ENG INST