Rocket cryogenic stage

FIELD: rocketry and space engineering; upper stages of launch vehicles injecting payloads from reference orbit into working orbits.

SUBSTANCE: proposed cryogenic stage includes cruise engine, oxidizer tank, toroidal fuel tank, inter-tank compartment, truss for connection with payload and truss for connection with launch vehicle. Toroidal fuel tank is made in form of lens in cross section with bottoms changing to frames. Tank is coupled with said trusses and inter-tank compartment through outer frame forming load-bearing system for taking-up external inertial loads.

EFFECT: reduction of total longitudinal clearance and mass of cryogenic stage; increased zone of payload under launch vehicle fairing.

1 dwg

 

The invention relates to rocket and space technology, namely to design rocket boosters, members of the space rocket, designed to remove from the reference orbit at the working energy of the orbit of various cosmic objects-payloads.

Known missile racks patent RU 2105702, B 64 G 1/16, 1/40, EN 2165379, B 64 G 1/00, 1/16, 1/40 and EN 2153447, B 64 G 1/40, 1/00, 1/16, having in its composition oxidizer tank, a toroidal fuel tank, hull and main engine.

A prototype of the proposed rocket upper stage adopted a block patent No. 2165379, IPC6: 64 G 1/00, 1/16, 1/40, containing the main engine, oxidizer tank, a toroidal fuel tank, milakovic compartment, farm mates payload and farm mates with the booster.

The disadvantage of the prototype is that the fuel tank, made in the form of a full torus, having a maximum dimension of height, leads to excessive size of the block length and reduces the height of the zone of payload under the fairing in space the head of the rocket.

The objective of the proposed missile unit is to reduce the overall size of unit height by changing the cross section of the fuel tank.

This task is achieved by the fact that the booster rocket, containing the main engine, oxidizer tank, Toro is long fuel tank, milakovic compartment, farm mates payload and farm pairing with booster applied toroidal fuel tank having a cross-sectional shape of lentils.

The drawing shows a rocket upper stage, where:

1 - oxidizer tank;

2 - toroidal fuel tank;

3 - main engine;

4 - milakovic compartment;

5 - farm pairing with booster;

6 - farm mates payload.

Proposed rocket upper stage containing the main engine 3, the oxidizer tank 1, a toroidal fuel tank 2, milakovic compartment 4 and farm mates with LV 5, in which the toroidal fuel tank 2 is a cross-section in the form of lentils.

Proposed rocket upper stage operates as follows.

External inertial loads arising from the operation unit both in flight and during transportation, perceived power circuit including farm mates with LV 5, a toroidal fuel tank 2, milakovic compartment 4 and farm mates payload 6.

Radial forces from the oxidizer tank 1 and main engine 3 perceived upper frame magbabago compartment 4.

The use of toroidal fuel tank 2 having a cross-sectional shape of lentils with keeping the volume of the tank due to the change in the value of its size in cross-section unit, allows to reduce the dimension of the toroidal fuel tank 2 in height, respectively, of reduced dimensions height magbabago compartment 4, farm pairing with booster 5 and the unit as a whole ~ 4%, in addition, on this value increases the height of the zone of payload under the fairing in space the head of the rocket.

The increase in the mass of the toroidal fuel tank 2 due to the change of its shape is offset by a reduction in the length of the block and, accordingly decrease its mass.

The use of lentil-shaped in cross-section toroidal fuel tank 2 allows to provide with a minimum mass cost of the transition from the frames to the bottom of the tank, and the degree of curvature of the bottoms is selected by calculation for a specific unit based on the required volume of the toroidal fuel tank 2 and the conditions of the layout block.

Rocket upper stage containing the main engine, oxidizer tank, a toroidal fuel tank, milakovic compartment, farm mates payload and farm pair with a booster, characterized in that the toroidal fuel tank cross-section is made in the form of lentils with bottoms that extend into the frames forming together with the specified farms mates and miraculum compartment power circuit perception of external inertial loads.



 

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SUBSTANCE: proposed tank has thin-walled shell of revolution and load-bearing attachment member in form of rod piercing the shell. Ends of rod are provided with fittings for securing it to shell. Attachment is mainly made by welding. Ends of rods are also provided with flanges having attachment units for securing them to adjacent structural members of spacecraft. Hollow rod consists of two pipes inserted one in other and welded together. Body of rod has holes in lower and upper parts.

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2 cl, 2 dwg

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4 tbl

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