Experimental Investigation of Dynamic Relations in a 48-inch Ram-jet Engine
- Hurrell, Herbert G
- July 20, 1956.
- Physical Description:
- 1 electronic document
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Engine dynamics were investigated for supercritical operation of the ram jet at Mach 2.75 over a range of simulated altitudes from 68,000 to 82,000 feet. Indicial-and frequency-response tests were conducted with fuel flow as the input variable. For a wide range of operating points, the response of static or total pressure to fuel flow consisted of a dead time followed by a response form that generally approximated a linear, first-order, lead-lag. The dead time varied significantly only with distance from the combustion zone. The rise ratio and the time constant of the lead-lag function were nearly independent of the pressure sensed.
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19930089241.
Accession ID: 93R18531.
- No Copyright.
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