Unsteady 1-D Thrust Modeling with EOS Effects for Ram Accelerator Experiments at Different Bores

Aerotecnica Missili & Spazio

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Field Value
 
Title Unsteady 1-D Thrust Modeling with EOS Effects for Ram Accelerator Experiments at Different Bores
 
Creator Knowlen, Carl
Bauer, Pascal
Bengherbia, Tarek
Yao, Yufeng
Bruckner, Adam P
Giraud, Marc
 
Subject


 
Description Advances made to the unsteady, one-dimensional (1-D) modeling of the thermally choked ram accelerator thrust-Mach number characteristics include the use of real-gas equations of state to account for the compressibility eects of the combustion products. Equations of state based on generalized empirical and theoretical considerations are incorporated into a 1-D computer code to predict the combustion end  tate equilibrium conditions when the propellant starts out a relatively high fill pressure (>2.5 MPa) and the projectile acceleration exceeds 100 km/s2. The objective of this work is to improve the unsteady 1-D model as a useful tool to predict the thrust of the thermally choked ram accelerator propulsive mode by utilizing key results from the more computationally intensive 2-D or 3-D simulations. New thrust-Mach number calculations compared with experimental data from 25-mm, 30-mm, 38-mm, 90-mm, and 120-mm-bore experiments are generally in good agreement until the point where enhanced accelerations are observed, presumably due to projectile material combustion. The results of this investigation indicate the need for more research on ram accelerator  flow fields and the role projectile material may play in the combustion process.
 
Publisher Associazione Italiana di Aeronautica e Astronautica (AIDAA)
 
Contributor
 
Date 2018-07-11
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article

 
Format application/pdf
 
Identifier http://131.114.27.37/index.php/AMS/article/view/346
10.19249/ams.v97i1.346
 
Source Aerotecnica Missili & Spazio; Vol 97, No 1 (2018); 19-26
0365-7442
 
Language eng
 
Relation http://131.114.27.37/index.php/AMS/article/view/346/pdf
 
Rights Copyright (c) 2018 Aerotecnica Missili & Spazio
 

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