Stability Correlation Between the Pulse Motor Combustion Tool and a Full-Scale Engine.
Abstract
A comparative stability evaluation was made between the Pulse Motor combustion tool and a full-scale engine. Sixty-two hot firings were conducted with the full-scale engine and 27 with the Pulse Motor, using four different injection patterns. The primary propellant combination was N2O4/50% N2H4-50% UDMH, although N2O4/MMH and N2O4/UDMH were also used. Testing was conducted at chamber pressures of 300 and 600 psia with a mixture ratio range of 1.8 to 2.2. The pulse gun stability-rating technique was used to artifically perturb the combustion process. Stability correlation between the Pulse Motor and full-scale engine was then evaluated by comparing the system response parameters, such as damping rate functions, pulse charge required for instability, resultant pressure perturbations, peak oscillation amplitudes, instability modes and frequencies, and combustion efficiency. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1969
- Accession Number
- AD0861818
Entities
People
- George O. Berls
- James F. Ensminger
Organizations
- Air Force Research Laboratory