Abstract
Owing to the high sweep angle and the slender structure, much less taking-off lift is produced by the horizontal taking-off hypersonic vehicle compared with general aircrafts. This paper aims at introducing the thrust vectoring technology into the taking-off stage of hypersonic vehicle, and discussing the effect of thrust vectoring technology on taking-off performance. The nonlinear hypersonic model with the thrust vectoring nozzle and retractable canard wings is firstly established in this paper. Then the taking-off process is divided into three parts, and the thrust vectoring technology is applied to these three parts respectively. Last, the simulation results indicate that the thrust vectoring technology obviously improves the taking-off performance of the hypersonic vehicle and effectively solves the problem of lacking lift.
Highlights
A hypersonic vehicle, with either rockets or scramjets as its main power source, generally refers to a vehicle flying at Mach 5 or above [1], which has become a popular research topic in air vehicles [2]
The vertical launching method can effectively avoid the problem of lacking lift, the cost and the reliability can hardly be given into consideration [4]
Thrust vectoring technology has been applied to a double-engine fighter in literature [6] and the simulation qualitatively illustrates that thrust vectoring technology is capable to improve the taking-off performances
Summary
A hypersonic vehicle, with either rockets or scramjets as its main power source, generally refers to a vehicle flying at Mach 5 or above [1], which has become a popular research topic in air vehicles [2]. Thrust vectoring technology has been applied to a double-engine fighter in literature [6] and the simulation qualitatively illustrates that thrust vectoring technology is capable to improve the taking-off performances. Thrust vectoring technology coordinated with canard wings has been applied to a fighter aircraft in literature [7] to improve the taking-off performances. Thrust vectoring technology coordinated with corresponding control surfaces has been applied to a general aircraft to testify the taking-off performances in literature [8]. Literatures on thrust vectoring technology applied to the hypersonic vehicle are rare. Hypersonic vehicle model with thrust vector nozzles and retractable canard wings is much more complex than general hypersonic vehicle Rare literatures discuss this complex nonlinear model before
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