The present invention relates to a hypergolic two-component system for rocket engines, including a fuel and an oxidising agent provided in a manner separated from one another and can be reacted in a rocket engine by bringing them into contact with one another. The fuel is an ionic liquid comprising a thiocyanate anion and one or more cations. The cation or cations are selected from one or more imidazolium ions of the general formula I, triazolium ions of the general formula II or III, and/or tetrazolium ions of the general formula IV, where R.sub.1 is a C.sub.1- to C.sub.6-alkyl radical or a C.sub.2- to C.sub.6-alkenyl radical, where R.sub.2 is hydrogen or a C.sub.1- to C.sub.6-alkyl radical or a C.sub.2- to C.sub.6-alkenyl radical, and where X.sub.1, X.sub.2 and X.sub.3 are each independently hydrogen, a C.sub.1- to C.sub.6-alkyl radical or a C.sub.2- to C.sub.6-alkenyl radical, and the oxidising agent comprises hydrogen peroxide.

A combustion tool fuel cell is provided having enhanced low temperature operation, including a fuel composition comprising at least one hydrocarbon component with a total vapor pressure equal or above 95 psig at 21 C.

A combustion tool fuel cell is provided having enhanced low temperature operation, including a fuel composition comprising at least one hydrocarbon component with a total vapor pressure equal or above 95 psig at 21 C.

The invention describes a monopropellant fuel that is a mixture in water of a water-soluble hydrocarbon fuel and hydrogen peroxide, where the hydrocarbon fuel and hydrogen peroxide are present in an approximately stoichiometric amount calculated to produce only carbon dioxide and water, wherein water is present in an amount at least 30% of the total weight of the monopropellant fuel.

The invention describes a monopropellant fuel that is a mixture in water of a water-soluble hydrocarbon fuel and hydrogen peroxide, where the hydrocarbon fuel and hydrogen peroxide are present in an approximately stoichiometric amount calculated to produce only carbon dioxide and water, wherein water is present in an amount at least 30% of the total weight of the monopropellant fuel.

The invention relates generally to dual mode bipropellant chemical rocket propulsion systems to be used in aerospace applications for 1) orbit raising, orbit maneuvers and maintenance, attitude control and deorbiting of spacecraft, and/or 2) propellant settling, attitude and roll control of missiles, launchers and space planes. The present invention also relates to a dual mode chemical rocket engine for use in such systems. The engine uses low-hazardous storable liquid propellants and can be operated either in monopropellant mode or in bipropellant mode. The monopropellants used are a low-hazard liquid fuel-rich monopropellant, and a low-hazard liquid oxidizer-rich monopropellant, respectively.

The invention relates generally to dual mode bipropellant chemical rocket propulsion systems to be used in aerospace applications for 1) orbit raising, orbit maneuvers and maintenance, attitude control and deorbiting of spacecraft, and/or 2) propellant settling, attitude and roll control of missiles, launchers and space planes. The present invention also relates to a dual mode chemical rocket engine for use in such systems. The engine uses low-hazardous storable liquid propellants and can be operated either in monopropellant mode or in bipropellant mode. The monopropellants used are a low-hazard liquid fuel-rich monopropellant, and a low-hazard liquid oxidizer-rich monopropellant, respectively.

An inflator (10), especially for a vehicle safety system, includes a combustion chamber (16) in which a solid propellant (18) combustible under the generation of gas is accommodated, and a compressed gas chamber (24) containing compressed gas (26), wherein even in the non-activated state of the inflator (10) a fluid communication exists between the combustion chamber (16) and the compressed gas chamber (24). The compressed gas (26) contains at least one inert gas as well as oxygen and at least one combustible gas, wherein the combustible gas is provided at a concentration at which no self-supporting conversion of the combustible gas with oxygen takes place.

An inflator (10), especially for a vehicle safety system, includes a combustion chamber (16) in which a solid propellant (18) combustible under the generation of gas is accommodated, and a compressed gas chamber (24) containing compressed gas (26), wherein even in the non-activated state of the inflator (10) a fluid communication exists between the combustion chamber (16) and the compressed gas chamber (24). The compressed gas (26) contains at least one inert gas as well as oxygen and at least one combustible gas, wherein the combustible gas is provided at a concentration at which no self-supporting conversion of the combustible gas with oxygen takes place.

Airbag cushion assemblies for aspirating ambient air to enhance inflation. Some embodiments may comprise an inflation module comprising an inflator and a plurality of high-velocity nozzles fluidly coupled with the inflator and configured to deliver inflation gas from the inflator into an airbag cushion. A housing coupled to the airbag cushion, may comprise an aspiration inlet configured to allow for receipt of ambient air into the airbag cushion during inflation of the airbag cushion. The plurality of high-velocity nozzles may be configured to, upon actuation of the inflator, draw ambient air into the airbag cushion along with the inflation gas from the inflator. In some embodiments, a valve assembly may be provided that is configured to open upon actuation of the inflator and to close following inflation of the airbag cushion to prevent air and inflation gas from exiting through the aspiration inlet.