METHOD OF CONTROL OF SUPERSONIC AIR FLOW OVER AIRCRAFT

• Main Authors: PRUDNIKOV ALEKSANDR GRIGOR'EVICH, JANOVSKIJ JURIJ GRIGOR'EVICH
• Format: Patent
• Language: English; Russian
• Published: 20.01.2006
• Subjects: AEROPLANES; AIRCRAFT; AVIATION; COSMONAUTICS; HELICOPTERS; PERFORMING OPERATIONS; TRANSPORTING

FIELD: aviation; control of supersonic air flow of supersonic and hypersonic flying vehicles. ^ SUBSTANCE: working medium under pressure escapes through hollow aerodynamic needle mounted before nose section of flying vehicle in form of separate jets forming aerodynamic cone at vertex of needle. Working medium has density no less than 0.06 g/cm3; jets are expelled from needle at exhaust velocity of Vw.m.Vf.v. where rhoair is density of air surrounding the flying vehicle; rhow.m. is density of working medium. Aerodynamic cone is filled with finely-dispersed gaseous and liquid medium forming contact with boundary layer on head section of flying vehicle. Jets of working medium escaping from needle may be directed at angle relative to longitudinal axis of needle; alpha> >0, where alpha is exterior angle between needle axis and cone generatrix. Pressure under which jets of working medium are expelled is formed by means of gas generator. Working medium may have form of liquid, paste or suspension, or endothermic coolant evaporating in inner cavities of needle and cone of gas-air fairing; its cooling effect is sufficient for in-flight cooling of flying vehicle; working medium may have form of liquid energy carrier burning in aft combustion chamber; gas generator is made in form of reservoir with gasified working medium. ^ EFFECT: reduced consumption of fuel; increased flying range of flying vehicle. ^ 5 cl, 1 dwg