DEVICE FOR CONTROL OF AERODYNAMIC DRAG OF HYPERSONIC FLIGHT VEHICLES Russian patent published in 2000 - IPC

FIELD: rocket and space engineering, applicable for control of aerodynamic drag of hypersonic flight vehicles maneuvering in atmosphere. SUBSTANCE: device has a nose section and an aerodynamic spike made in the form of a thin cylindrical rod with a tapered end piece, it is suggested to furnish the device with an additional number of aerodynamic spikes located in the device for keeping and feeding of aerodynamic spikes, and a control system. It is suggested to make the device for keeping and feeding of aerodynamic spikes in the form of a fixed cylindrical sealed casing for accommodation of a vessel for compressed gas connected to the feeding channel through a valve. The end of the feeding channel is connected to the guide channel and furnished with an aerodynamic spike position pickup. The channels parallel to the axis and accommodating the aerodynamic spikes are closed with covers and connected to the vessel for compressed gas through valves. The suggested structural arrangement of the device makes it possible to realize the constant length of the extended part of the aerodynamic spike, which, in turn, provides for a stable coordinate of the center of pressure of the hypersonic flight vehicle and, consequently, for a stable position of the center of pressure during its continuous aerodynamic glide. EFFECT: enhanced static stability of hypersonic flight vehicle in flight. 5 dwg