Research on shipboard aircraft model and simulation of ship landing environment Abstract
Aircraft carrier / carrier aircraft system is an important force of modern military, a necessary weapon of modern navy, and also a symbol of national comprehensive national strength. Therefore, the pace of research on aircraft carrier / carrier aircraft system in various countries has never stopped. Aircraft carriers and shipborne aircraft complement each other, and only when they are combined can they exert their strongest strength. Aircraft carriers are a platform for naval aircraft to take off and land at sea, and a large surface warship with shipborne aircraft as its main combat weapon. The ship body of an aircraft carrier has an oversized deck for the take-off and landing of a shipborne aircraft, and its movement is also a key factor affecting the safety and accurate landing of a shipborne aircraft.
Shipboard aircraft and land-based aircraft, its use environment is relatively bad. Safety and accurate landing has become an important issue in the use of shipboard aircraft. The movement of aircraft carrier at sea, the environment of sea and turbulence disturbance all affect the safety of landing ship. The limited length and width of the deck of aircraft carrier also make the landing difficulty of carrier aircraft much more difficult than that of land-based aircraft. In this paper, first of all, by using the basic knowledge of dynamics and other disciplines, the constraint relations among the variables of shipborne aircraft in the coordinate system are obtained, the longitudinal motion equation model of shipborne aircraft is established, and the small disturbance equation of shipborne aircraft landing is given. The natural state of the shipborne aircraft is also discussed. In the Matlab / Simulink environment, the transfer function of the throttle and elevator input corresponding to each output of the aircraft and its simulation are obtained under the environment of Matlab / Simulink.
This paper also studies the influence of carrier movement on the landing of carrier aircraft, defines the degree of freedom of aircraft carrier and analyzes the influence of each degree of freedom according to the characteristics of aircraft carrier motion at sea. The influence of pitching and swinging motion on the landing of shipborne aircraft was studied. The stationary stochastic process was modeled by using the power spectrum model of the aircraft carrier, and the simulation of the aircraft carrier movement was carried out, and the characteristics and causes of the ship tail current were analyzed. The engineering method is used to simulate and analyze the wake of aircraft carrier. The simulation results show that the magnitude of the periodic component of the ship tail current induced by the aircraft carrier motion is larger, especially the closer to the final phase of the ship landing, the periodic component of the ship tail current to the shipborne flight. The greater the impact of aircraft landing.
Keywords Shipborne aircraft; Carrier Motion; Longitudinal Control Law; Tailstream; Simulation