Ignition and Combustion of Multiphase Fuels in a High Speed Air Stream.
Abstract
An investigation of some basic flow and combustion characteristics of storable fuels was performed. The work is concerned with the injection, mixing, and chemical reaction processes associated with direct injection of metallized slurries in a high speed air stream. Experiments were performed in a direct connect constant area combustor supplied by a Mach 2 air stream at pressure levels of approximately 1 atm. Penetration and spray formation observations were made at ambient (530R) total temperatures whereas mixing and combustion tests were performed for temperatures ranging from 1500R up to approximately 3500R. The fuels examined in the current study were a magnesium-hexane slurry and a boron-magnesium-hexane slurry. Emphasis was on the Mg/Hex slurry although some revealing preliminary tests were performed for the B/Mg/Hex fuel. The results include the observation that autoignition of the Mg/Hex slurry occurs at about 2600R total temperature and is the same as the pure hexane case; staged ignition and combustion was generally observed with the hydrocarbon igniting first, followed by the metal oxidation process; combustion efficiencies of over 90% were obtained, and the preliminary boron/magnesium/hexane tests indicate that above a certain temperature its performance is superior to the Mg/Hex slurry. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1971
- Accession Number
- AD0726639
Entities
People
- Raymond Edelman
- Stephen Schmotolocha