Accession Number:

ADA280446

Title:

Fundamentals of Acoustic Instabilities in Liquid Propellant Rockets.

Descriptive Note:

Annual rept. Feb 1992-Feb 1993

Corporate Author:

CALIFORNIA UNIV SAN DIEGO LA JOLLA

Personal Author(s):

• Williams, F. A.

Report Date:

1992-04-01

Pagination or Media Count:

7.0

Abstract:

In this program, equations were written describing combustion instability in liquid-propellant rocket motors. The nonhomogeneous nature of the acoustic medium was taken into account, with the possibility of both subcritical and supercritical bifurcations occurring in the liquid-gas system. Attention was focused on characteristic times of the various flow, mixing and combustion processes as they arise in the newer engines of interest to the Air Force, in an effort to identify important physical phenomena in the instability and to achieve tractable descriptions of the instability processes. Theory was compared with available experimental observations in an effort to evaluate current theoretical capabilities. Combustion instability, Liquid-propellant rockets

Descriptors:

• *LIQUID PROPELLANT ROCKET ENGINES
• AIR FORCE
• OBSERVATION
• THEORY
• LIQUID PROPELLANTS
• FLOW
• MOTORS
• INSTABILITY
• ROCKETS
• ATTENTION
• EQUATIONS
• MIXING
• ACOUSTICS
• COMBUSTION
• TRACTABLE

Subject Categories:

• Liquid Propellant Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE