The energy and pressure exponent of composite modified double-base propellant

✍ Scribed by Hou Zhulin; Feng Zeng-guo; Wang Enpu; Han Panming

• Book ID: 105355754
• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 392 KB
• Volume: 17
• Category: Article
• ISSN: 0721-3115
• DOI: 10.1002/prep.19920170203

✦ Synopsis

Abstract

The paper describes an analysis on the energy and pressure exponents of composite modified double‐base (CMDB) propellants. The evaluation of the energy was conducted by means of a thermodynami‐ cal program. Propellant burning rates were determined by the strand burner method. In the AP‐based composition, the energy is enhanced and the pressure exponent reduced with increasing AP content. When AP is partially or entirely replaced by the nitramines HMX or RDX, Isp is improved, and the pressure exponent is inevitably increased. A mixture of lead salicylate or lead o‐amino benzoate and copper 2,4‐ or 3,5‐dihydroxy benzoate produces a remarkable effect on the burning nature of the CMDB propellant. It was noted that the pressure exponent decreases from 0.66 to 0.48 with lead and copper salts added at 3.0% in AP‐Al, 0.82 to 0.60 at 2.0% in RDX‐Al and 0.72 to 0.54 at 2.5% in RDX‐AP‐Al compositions, respectively.