Vereinigte Flugtechnische Werke-fokker Gmbh

Helmut Friedrich

Jurgen Schaper

An auxiliary gas turbine in an aircraft is driven by adding dimethyl-hydrazine to Kerosine and producing propellant gas by adding HNO.sub.3 or N.sub.2 O.sub.4 as oxidizer. Additional Kerosine is injected into the resulting gas for matching the gas constant of that gas to the gas constant of regular combustion gas which normally drives the turbine.

Formation of auxiliary drive gas for turbine

A gas turbine for starting an aircraft engine and for driving auxiliary equipment, being normally run by combustion, receives decomposition gases of hydrazine, selectively on a standby basis, whereby aircraft engine fuel is added to these gases, and the mixture is then fed to the turbine to drive the turbine without combustion.

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Stuhr, Germany

Helmut Friedrich