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Development of inertialess flying vehicle control technologies using streamer microwave discharge

  Development of perspective supersonic and hypersonic flying vehicles (FV) appreciably restrains by the difficulties connected with problems of flight control. Methods of influence on subsonic and supersonic streams in vicinity of FV with use of electric gas discharge plasma are discussed with rising activity.  Researches in this direction are conducted in the USA (AF, NASA), France (ONERA), the Great Britain (British Aerospace). Thus researches on plasma aerodynamics are conducted in several applied directions: decrease in wave resistance of a flying vehicle, creation of operating forces, modification of a boundary layer for decrease of friction forces, an influence on separation flows, etc.
MRTI scientists and engineers work more than for 20 years are working in the field of research and applications of microwave (MW) gas discharges, they have unique experimental base. They have developed physical basis of a new supersonic stream control method with use of the streamer MW discharge.
At the heart of the method properties of such a discharge in dense gases lay. The MW discharge can be raised in definite place of FV (on FV surface or at some distance from it) without application of electrodes. Speed of the streamer discharge propagation exceeds even speeds of perspective FV. In dense gases the MW discharge represents a network of the thin plasma channels practically completely absorbing energy of radiation and with high efficiency transforming it in thermal energy of a stream. A time interval between the moment of MW energy delivery and appearance of operating force is insignificantly small.
In the MRTI in laboratory conditions legitimacy of a method idea of creation of the lifting force creation acting on the model in a supersonic stream was already proved with the help of surface continuous MW discharge. Generated force is proportional to the power put in the MW discharge by the generator, and it weakly depends on size and a direction of a local stream speed and its density in a place of energy release. Simultaneous use of MW energy and combustion energy of the fuel injected in the discharge area widens borders of external energy put possible application for optimization of FV characteristics and controllability.
The developed method opens new possibilities for FV flight control in modes at which mechanical means simply lose their efficiency. Small inertia of switching on and off of the operating force makes possible widening of flight stability zones at the expense of dynamic stabilization application. MW discharges can be used also for local change of FV aerodynamic characteristics (influence on a separation of a stream and a boundary layer, formation of density jumps, etc.).
During the project realization it is planned: 1) to develop effective methods of generation of the forces acting on bodies flown round with a high-speed stream by means of powerful streamer MW discharge; 2) to prepare the program of flight experiment on working off FV control methods; 3) to create a system prototype of inertialess flight control with use of the streamer MW discharge

 
 
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