Method for evaluating airworthiness conformity of flight performance of amphibious aircraft

Abstract

The invention provides a method for evaluating airworthiness conformity of flight performance of an amphibious aircraft comprising the following steps: obtaining first data according to a design scheme of the amphibious aircraft; wherein the first data comprises aircraft hydrodynamic lift and hydrodynamic resistance data, aerodynamic lift and aerodynamic resistance data, engine tension characteristics under different accelerators, heights, speeds and temperatures, engine oil consumption characteristics and weight characteristic data; according to the first data, the amphibious aircraft external force mathematical model and the aircraft two-degree-of-freedom translational motion equation set, acquiring a calculation result, wherein the calculation result comprises operation parameters of the aircraft under operation state value combinations specified by different airworthiness terms; and comparing the operating parameters under the airworthiness terms with the requirements of the corresponding airworthiness terms for the operating parameters of the aircraft to obtain a flight performance airworthiness conformance conclusion.

Description

technical field [0001] The invention belongs to the technical field of aircraft airworthiness verification, and in particular relates to an evaluation method for the airworthiness compliance of the flight performance of an amphibious aircraft. Background technique [0002] The airworthiness compliance of conventional aircraft flight performance is to determine the flight parameter values ​​that not only ensure flight safety but also have better economic benefits, such as ground takeoff and landing speed, allowable maximum takeoff weight and landing weight, and the most fuel-efficient or lowest-cost climb , cruising, descent speed and cruising altitude, as well as the flight time and fuel consumption of the above-mentioned flight stages for the formulation of flight plans. [0003] Amphibious aircraft is a new type of aircraft that can use the lower part of the hull to take off and land on the water, and can also use the landing gear to take off and land on the ground at the ...

AI Technical Summary

Problems solved by technology

However, when conducting airworthiness compliance studies for amphibious aircraft, it is impossible to directly adopt the existing flight mechanics models for conventional land-based aircraft

[0004] Therefore, the prior art lacks an airworthiness compliance assessment method for the surface performance of amphibious aircraft

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