Longitudinal control stability augmentation control law for amphibious aircraft

An amphibious aircraft, longitudinal control technology, applied in seaplanes, aircraft transmissions, control starting methods, etc., can solve the problems of insufficient longitudinal static stability, and achieve the goal of improving longitudinal flight quality, easy manipulation, and improving flight safety. Effect
CN106828883AInactive Publication Date: 2017-06-13R&D INST OF CHINA AVIATION IND GENERAL AIRCRAFT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
R&D INST OF CHINA AVIATION IND GENERAL AIRCRAFT
Publication Date
2017-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a longitudinal control stability augmentation control law for an amphibious aircraft. In order to improve the longitudinal static stability of the aircraft in the take-off and landing state and restrain the weight of the aircraft in the water supply fire fighting process, the sudden gravity center change and the disturbance caused by sudden wind, on the basis of an existing assisting flight control system of the aircraft, a stability augmentation control system is interconnected with the assisting flight control system through a composite rocker arm. An irreversible type is adopted by the assisting flight control system, a gas-liquid-human sensing device is arranged, and therefore it is guaranteed that the flight control characteristics within a whole flight envelope meet the requirements of the airworthiness regulation. The stability augmentation control system makes sure that the short-period motion mode of the aircraft meets the requirements of the flight quality standard through pitching rate feedback, attack angle and overload feedback and the like.
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Description

[0001] The technical field mentioned:

[0002] The invention patent relates to the field of aircraft longitudinal control enhancement and stability enhancement control

[0003] Background technique:

[0004] The large-scale amphibious aircraft in service in China adopts a mechanical manpower control system, and the control force is too large, which greatly increases the pilot's control burden and adversely affects the flight quality and flight safety of the aircraft. Although the large-scale amphibious aircraft under development uses a mechanically assisted flight control system, due to the non-return system, the pilot's control burden is still too heavy when the aircraft is in the take-off and landing state, and it is easy to cause large instantaneous changes in attitude when putting out fire and throwing water . In addition, the sea-adaptive and anti-wave capability of this type of aircraft still cannot meet the requirements of open-sea rescue in harsh sea conditions. In ord...

Claims

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