Combined dynamic adjustable inlet with single degree of freedom control and its design method

A technology combining dynamics and design methods, applied in design optimization/simulation, calculation, mechanical equipment, etc., can solve the problems of unfavorable performance improvement of the intake passage, difficulty in the design of the adjustment mechanism, and high compression efficiency, so as to reduce the difficulty of design and broaden the scope of work. Range, the effect of improving aerodynamic performance
CN108590860BActive Publication Date: 2019-11-12NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2019-11-12

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Abstract

The invention discloses a unidirection control combined power adjustable air inlet way and a design method thereof. The air inlet way is composed of a first-stage bending compression face, a second-stage bending compression face, a fixing lip cover, a throat equal straight section and a square-to-round expansion section. The unidirection control combined power adjustable air inlet way is characterized in that a hook face+wedge face combined external pressure section wave system combinatorial arrangement is provided and is applied to a binary supersonic velocity air inlet way external pressuresection top plate rotating variable geometry scheme, it is guaranteed that the combined power adjustable air inlet way can normally work under all mach numbers, meanwhile, the contradiction that consideration cannot be given to supersonic velocity air inlet way low mach starting capacity and high mach number aerodynamic performance is avoided. The adjustable second-stage compression face is a unique motion component of the overall air inlet way, and one motor is used for achieving unidirection control over two geometrical parameters including air inlet way second-stage compression angles and the throat height.
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Description

technical field

[0001] The invention relates to a combined power adjustable intake port controlled by a single degree of freedom and a design method thereof, belonging to the technical field of combined power intake port design. Background technique

[0002] The air-breathing hypersonic propulsion technology has become one of the current research hotspots in the international aerospace industry. As the key aerodynamic component of the air-breathing hypersonic propulsion system, the air intake duct directly affects the overall performance of the propulsion system. However, the excellent aerodynamic performance of the inlet in the design state cannot guarantee that it can work normally and stably under all key working conditions, and the contradiction between the starting ability at low Mach number and the performance at high Mach number has become a constraint A prominent problem in wide-speed flight is that conventional fixed-geometry inlets cannot meet the flight requiremen...

Claims

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