Microwave ignition of electrically operated propellants

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United States of America Patent

PATENT NO 10808649
APP PUB NO 20180051657A1
SERIAL NO

15240932

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Abstract

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Microwave energy is used to ignite and control the ignition of electrically operated propellant to produce high-pressure gas. The propellant includes conductive particles that act as a free source of electrons. Incoming microwave energy accumulates electric charge in an attenuation zone, which is discharged in the form of dielectric breakdowns to create local randomly oriented currents. The propellant also includes polar molecules. The polar molecules in the attenuation zone absorb microwave energy causing the molecules to rapidly vibrate thereby increasing the temperature of the propellant. The increase in temperature and the local current densities together establish an ignition condition to ignite and sustain ignition of an ignition surface of the attenuation zone as the zone regresses without igniting the remaining bulk of the propellant.

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Patent Owner(s)

Patent OwnerAddress
RAYTHEON COMPANY141 SPRING STREET LEXINGTON MA 02173

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Danforth, Jeremy C Tucson, US 26 111
Johnson, Daniel K Glendora, US 3 6
Langhenry, Mark T Tucson, US 19 73
Summers, Matt H Marana, US 21 88
Villarreal, James K Tucson, US 14 78

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