DE19600824A1 - Turbine shaft load drive mechanism for hypersonic region - Google Patents

Abstract

The drive mechanism has at the front end, in the region of the compressor turbine (3), an inner channel and an annular outer channel, both of which lead to the combustion chambers and can be switched. The inner channel passes through the compressor turbine, the outer one directly to the combustion chambers. Both channels have adjustable diffusors (1,2) in the front, at the air intake. The inner diffusor can be closed completely. At high speed, the drive mechanism operates with air coming in only via the outer channel.

Description

The invention relates to the improvement of a Turbine shaft power engine for hypersonic area and above all has the improvement of patent applications P 195 36 181.4-13 to meaning.

In this application a turbine shaft power is used engine used, the usual structure and usual How it works.

The compressor turbines compress the intake air, and through the expansion turbines, the hot gas becomes Power generation relaxed.

It has now been found that at high speeds the compressor turbines may have too much air suck in what is the functionality of the engine can affect.

For this reason, a different structure was sensible considered.

The new structure concerns a two-channel coaxial engine, has the following structure.

The inner channel represents the engine in its original shape, with the front at the air intake an infinitely adjustable diffuser is located at high speeds can be closed completely. Around this engine is coaxial or ring-shaped at the front a second channel laid around, which also has a step adjustable diffuser.

This second channel opens into the combustion chambers and either he or the channel of the Turbine of the compressor can be switched on.

At high speed, the diffuser becomes the Compressor turbines closed, so that the compressor door no longer suck in air.

The diffuser is accordingly pointed to the to provide low air resistance for flowing air. The compressor turbines (diffuser closed) do not suck  Air more, so they are a clutch, z. B. slats coupling disconnected from the expansion turbines.

This happens at high speed when the dynamic pressure is large enough to be good without compressor turbines To ensure function.

The air flows through the outer ring via air congestion shaped channel in the combustion chambers, fuel is introduced and burned, and the gas from the expansion turbines to drive the downstream high pressure compressor relaxed.

It should be added that a sub is still planned settlement between expansion turbines and downstream High pressure compressor to install, so the high pressure compressor can run slower than the expansion turbine.

For this you could e.g. B. a planetary gear, a freewheel and use a multi-plate clutch.

And this gear when you reach high speed is switched accordingly.

So this invention relates to a shaft power engine, that works at high speed with dynamic pressure.

Reference list

1st External diffuser with channel
2nd Inner diffuser
3rd Compressor turbine
4th Duct changeover flaps
5 . Combustion chambers
6 . Expansion turbines
7 . Exhaust pipe
8 . Reduction gear with changeover option
9 . Clutch z. B. multi-plate clutch

Claims (1)

Turbine shaft power engine for the hypersonic range, characterized in that
that at the front in the area of the compressor turbines there are coaxially an inner and an annular outer channel, both of which lead to combustion chambers and are switchable.
The inner channel leads through the compressor turbines, the outer channel leads directly to the combustion chambers.
Both channels are equipped with adjustable diffusers at the front of the air inlet, whereby the inner diffuser can be completely closed.
At high speeds, the engine only works with air congestion via the outer duct.
In addition, that there is a clutch between expansion turbines and compressor turbines, with which the compressor turbines can be uncoupled.
Secondly, there is a reduction gear on the driven shaft of the engine, with which this output can be brought to a lower speed, switchable from high to lower speed.