Biopropellant Engine Plume Contamination Program. Volume 1. Chamber Measurements. Phase 1
Abstract
An experimental program to measure the mass flux in the backflow region of a 5-lbf bipropellant thruster at angles up to 147 deg with respect to the plume centerline using temperature-controlled and temperature-compensated quartz crystal microbalances (QCM'S) is presented. The measurements were conducted in a high vacuum cryogenic chamber (Aerospace Chamber 10V) at AEDC. Gaseous helium and liquid helium cryopanels provided a blank-off pressure in the ten to the minus 6th power torr range and maintained the background pressure in the ten to the minus 5th power torr range while pulse firing the motor (25- to 100-msec pulse width, 1- to 10-percent duty cycle). Chamber recovery time was a few tenths of a second. Several motor configurations and operating conditions were compared for potential contamination effects.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1979
- Accession Number
- ADA078412
Entities
People
- Bobby E. Wood
- D. F. Frazine
- J. A. Roux
- R. Dawbarn
- R. E. Alt
Organizations
- Arnold Engineering Development Complex