BH3-Amine and B(CH3)3-Amine Adducts as Additives for Liquid/Gel Hypergols and Solid Hybrid Rocket Motor Fuels: Property and Performance Predictions
Abstract
BH3-amine and B(CH3)3-amine adducts were investigated as potential additives for rocket-propellant formulations. The investigation included the calculation of property predictions for a variety of known and notional adducts. Property predictions were based on results from quantum chemistry methods. Predicted gas-phase properties included B-N bond dissociation energies (BDEs) and enthalpies of formation at 298 K [DeltafHg(298)]. Predicted condensed-phase properties included enthalpies of sublimation [DeltaHs(298)], enthalpies of formation at 298 K [DeltafHc(298)], and densities (rho). Values for these properties that were derived from measured data or higher-level computational methods were also obtained from open literature sources. In the course of the literature search, assessments of the thermal and/or air stabilities of some adducts were identified, and an attempt was made to correlate them with B-N BDEs. The DeltafHc(298) estimates were employed as input for thermochemical code-based calculations of the specific impulse that adducts could potentially generate when combined with inhibited red fuming nitric acid. Results from the study indicate that several BH3-amine adducts warrant further investigation as additives for liquid/gel hypergols or for solid fuels for hybrid concepts.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2013
- Accession Number
- ADA592051
Entities
People
- Chiung-chu Chen
- Michael Mcquaid
Organizations
- United States Army Research Laboratory