Accession Number:

ADA289554

Title:

Ram Accelerator Performance Calculations Using a Modified Version of the NASA CET89 Equilibrium Chemistry Code

Descriptive Note:

Final rept. Sep 93-Mar 94

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• Liberatore, Federico

Report Date:

1994-12-01

Pagination or Media Count:

54.0

Abstract:

The equilibrium chemistry code, CET89, is modified to calculate the performance of ram projectiles using 1-D control volume derived governing equations. The modified program is capable of calculating the projectile thrust and chemical energy release as functions of projectile velocity. This information is then used to calculate the distance vs. time trace of a projectile traveling through an accelerator barrel. The modified program retains the full use of the thermodynamic database of the original code thus permitting performance calculations for a wide range of reactant mixtures.

Descriptors:

• *COMPUTATIONS
• *ACCELERATION
• *CODING
• *CHEMISTRY
• *CHEMICAL EQUILIBRIUM
• VELOCITY
• COMPUTER PROGRAMS
• DATA BASES
• PERFORMANCE(ENGINEERING)
• THERMODYNAMICS
• PROJECTILES
• ONE DIMENSIONAL
• ENERGY
• MIXTURES
• TIME
• CHEMICAL REACTIONS
• RELEASE
• SUPERSONIC COMBUSTION
• EQUATIONS
• RANGE(EXTREMES)
• THRUST
• REACTANTS(CHEMISTRY)
• INTERIOR BALLISTICS
• HYPERVELOCITY GUNS
• SUBSONIC COMBUSTION

Subject Categories:

• Physical Chemistry
• Computer Programming and Software
• Fluid Mechanics
• Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE