ROCKET Russian patent published in 2019 - IPC F42B15/00 

FIELD: astronautics.

SUBSTANCE: invention relates to rocketry. In known 2-stage missile containing the MS, which is fixed in the transient frame with destructible elements, the detachable start stage with the engine, which is attached to the transition frame by a coupling nut, a piston and a fairing, the piston is fixed in the aft part of the MS. Outer part of the piston is made in the form of two cylinders of different diameters, united by a cone. Coupling nut is equipped with lock nut made in the form of fairing. MC is attached to the transient frame by destructible elements (in the form of shear bolts). At the same time the piston fixed in the forage part of the MS, with the front bottom of the engine and the inner cavity of the transient frame, form a storage chamber communicated with the atmosphere by a channel (channels) of the air intake (or several air intakes) made in the form of a diffuser in a transient frame. MC is installed with thrust against the shoulder of the transitional frame. On cylinder of larger diameter of piston, with attachment to bead of transfer frame, there is an elastic split nut, on which there is installed and fixed movable stop ring forming with preliminary part of storage chamber and diffuser high pressure chamber, and cylinder of smaller diameter of piston is arranged in support, rigidly fixed on engine. Length of section I₂ cylinder of smaller diameter of piston arranged in support is equal to length of section I₁ Transient stem, in which stern part of sustainer stage is arranged.

EFFECT: invention allows improving operating reliability.

1 cl, 4 dwg