Accession Number:

ADA231309

Title:

New High Energy Density Small Ring Systems

Descriptive Note:

Final rept. Sep 1986-Nov 1989,

Corporate Author:

ALABAMA UNIV IN BIRMINGHAM DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1990-12-01

Pagination or Media Count:

40.0

Abstract:

A theoretical research investigation of four atom light element species has been undertaken in order to find propellants with revolutionary performance. The ab initio calculations show that the rhombic geometry is a global minima on the potential energy surface of many dicarbides and diborides composed of H, Li, Be, B, C, and Si. By means of bond-stretch isomerism, bonding pattern change, these rhombic species can store significant amounts of energy - 87 kcalmole to 122kcalmole. Only in the case of B2Be2 was the tetrahedral form more stable. All of the four-atom species found stable by this investigation are estimated to provide high specific impulses.

Subject Categories:

  • Flight Control and Instrumentation
  • Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE