ROTARY CRYOTECHNICAL SLEEVE, CRYOGENIC LIQUID FEED LINE AND ROCKET ENGINE Russian patent published in 2008 - IPC F02K9/66 F16L27/08 

FIELD: engines and pumps.

SUBSTANCE: rotary cryotechnical sleeve contains the first section of cryogenic line and the second section of the said line, both rotating around the axis, an appliance to prevent redial shift of one of the aforesaid line sections and an appliance to prevent axial shift of the other section of the said cryogenic line relative to the other section. The first section contains an external member with double walls, the space between them being vacuumised, while the second section comprises an internal member with double walls, the space between them vacuumised, partially entering into the external member. The first sealing gasket is fitted between the internal member free end fed into the external member and one of the said appliances preventing radial and axial shift. The second sealing gasket is arranged between the external member free end and the other appliances preventing axial and radial shift. A heating appliance is arranged nearby the second sealing gasket. The other invention of the set relates to cryogenic liquid feed line connecting a fixed module with a movable module possessing, at least, one degree of freedom and containing, at least, one aforesaid rotary cryotechnical sleeve. One more invention relates to rocket engine combusting liquid cryogenic liquid. The rocket engine incorporates, at least, one jet pump to feed fuel injection device, one fuel tank, a combustion chamber, at least, one drive mechanism to vary the combustion chamber position and, at least, one aforesaid rotary sleeve arranged in, at least, one feed line running from the fuel tank to the jet pump, or, at least, in the line running from the jet pump to the fuel injection device.

EFFECT: lower weight and smaller sizes of cryotechnical sleeve, sustaining notable bending forces caused by vibration or acceleration of the rocket engine.

25 cl, 13 dwg