DE2658962A1 - Rocket driven submarine vessel - involves device generating gas shell with provision to counter rapid decrease of depth of submersion - Google Patents

Abstract

The submarine vessel is driven by a rocket, as in 1912480. The thrust generating rocket combustion, i.e. fuel combustion in G/sec., increases more rapidly than in linear manner, with the vessel dept, i.e. about with a sq square of this magnitude. Preferably the solid fuel cake is in the form of a series of hollow spheres, or ellipsoids, combusted simultaneously. The entire combustion area extends approximately over a square of the vessel depth. This effect is used for water exhaust from the vessel rear, in order to facilitate its sinking.

Description

Registration for additional patent no. 2 Z DBP 1912480

For the body moving under water according to DBP 1912480, its diving speed is of prime importance.

The driving resistance to which this body is exposed under water, First and foremost, it depends on the viscosity of the water.

Then the replacement. In addition, the thrust of its engine, i.e. a solid fuel rocket due to the increase in hydrostatic pressure with decreases steadily with increasing diving depth. Both circumstances slow the diving speed. This delay can be counteracted if the rocket burns up the thrust increases faster than linearly with the diving depth of the body. With their square, for example.

According to the invention, this is done by designing the solid fuel cake as a series of adjoining hollow spheres or ellipsoids, which from the inside burn out (Figure 2 of the present supplementary application; burn-off by short arrows indicated).

After ignition of the propellant charge 14 its jet flame shoots downwards, coating the thin magnesium lamellae 15 and igniting them. the Composition of the propellant in propellant 14 (a kind of black powder) should be such be that its hot deflagration gases contain about 20 vol-tons of free 02 and thus able to trigger the combustion of the magnesium lamellae 15 without delay.

This combustion spreads radially and in doing so involves the rapid ignition coating 18 of the solid fuel cake 16 that fires instantly. catches.

The burn spreads radially-divergent (short arrows.

The area of this burn-up grows with the square of the radially covered path in the solid fuel cake. That produces the desired Increase in rocket thrust in the course of the body's diving process.

It is well known that the detachment can also be contained in a torpedo-like manner tapered rear of the body can be achieved by boundary layer suction (see Eck, Fluid Mechanics 1966, p.288).

According to the invention, the required negative pressure in the body can be achieved almost without Additional expenditure on equipment using the negative pressure mentioned in DBP 1912480 getting produced. The two throttle organs 19 and 20 are sufficient for this (picture: The boundary layer suction conical, non-gas-bearing body shell. 21 is indicated by dash-dotted lines in picture 1 indicated.

As the detachment ceases to exist, the water becomes vertically downwards directional pressure components on the body rear 21 effective, which formwide.rstand of the vertically diving body very noticeably.

In Fig. 1, 22 means the gas-carrying body shell and 23 means 19 for the Gas envelope stabilization according to DBP 1912480 20 for dimensioning the boundary layer suction on the (non-gas-bearing) rear of the body Propulsion nozzle of the Solid fuel rocket, which by the way by Exhaustenffekt for the required negative pressure has to arise in the body.

Claims (3)

Claims Water moving body according to DBP 1912480 with Eigen-Unter Water moving body according to DBP 3932480 self-propelled by rocket, characterized in that that the rocket burn-up producing the thrust (i.e. g fuel per second) is faster as linear with the diving depth reached by the body in question, roughly with its square increases. Cont. 2 body according to claim 1 with propulsion by solid fuel rocket, characterized in that their solid fuel cake as a row at the same time Burning hollow spheres or ellipsoids is formed, the total burnable area about the square of the diving depth reached by the body in question. Cont. 3 Utilization of the negative pressure in the body moving under water according to DBP 1912480 claim 1 for boundary layer extraction from which the non-gas bearing Water flowing around the rear of the said body in order to reduce the body's resistance to form.