Accession Number:

AD0762841

Title:

Combustion Instability Study of Solid Propellants.

Descriptive Note:

Final rept. Sep 71-Mar 73,

Corporate Author:

UNITED TECHNOLOGY CENTER SUNNYVALE CALIF

Report Date:

1973-06-01

Pagination or Media Count:

44.0

Abstract:

The rotating valve method of measuring the combustion response of solid propellants to small amplitude pressure oscillations were evaluated. The method is based on producing pressure oscillations in a small rocket motor by varying the area of a secondary exhaust nozzle in a periodic manner. This is accomplished by using a rotating value as the secondary orifice. The valve apparatus operates concurrently with a primary nozzle which controls the steady-state pressure. The frequency of the oscillations is determined by the rotational speed of the valve. A theoretical analysis was conducted to relate the combustion response function to measurable ballistic properties of the combustion chamber. Modified author abstract

Subject Categories:

  • Combustion and Ignition
  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE