Accession Number : ADD016235

Title :   Flame Position Ultrasonic Interferometer.

Descriptive Note : Patent, Filed 6 Feb 90, patented 28 Dec 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Soss, David A

Report Date : 28 Dec 1993

Pagination or Media Count : 8

Abstract : A sensitive instrument system for determining the position of the burn front in a rocket motor is disclosed. Separate adjacent transmitter and receiver clements are attached to the rocket motor casing to form an ultrasonic interference system. An ultrasound beam is transmitted to the motor's interior and the reflected beam from the propellant gas burn front is captured by the receiver. The received signal is processed to determine the distance to the propellant-gas interface.

Descriptors :   *ULTRASONICS, *PATENTS, *INTERFEROMETERS, INTERFACES, INTERFERENCE, MOTORS, PROPELLANTS, RECEIVERS, ROCKET ENGINES, ROCKETS, SIGNALS, TRANSMITTERS

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE