Accession Number:
ADA329776
Title:
Contributions of Atomization, Vaporization and Combustion to Liquid Rocket Acoustic Energy
Descriptive Note:
Final technical rept. 1 Jul 94-30 Jun 97
Corporate Author:
PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF AEROSPACE ENGINEERING
Personal Author(s):
Report Date:
1997-09-15
Pagination or Media Count:
7.0
Abstract:
Acoustic oscillations were induced in a sub-scale liquid rocket engine that burned liquid oxygen and gaseous hydrogen as propellants. The oscillations in the chamber were forced by a rotating gear just downstream of the nozzle throat. High frequency data was acquired for pressure and velocity via a pressure transducer and a magnetic flowmeter. The magnetic flowmeter obtains the acoustic gas velocity by measuring the voltage induced by the ionized combustion products moving through an externally imposed magnetic field. A cross correlation was performed on the velocity and pressure signals to determine the amplitude and phase difference of the two signals.
Descriptors:
Subject Categories:
- Liquid Propellant Rocket Engines