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Exploratory Study of Ground Proximity Effects on Thrust of Annular and Circular Nozzles
Attribution
This is the abstract and citation. Full text lives at NASA NTRS — we link out rather than host. All credit to the authors and Legacy CDMS.
Abstract
Verbatim from NASA NTRS. Not paraphrased, not summarized.
The proximity of the ground to an annular nozzle can result in thrust augmentation of up to 50 percent. The magnitude of thrust augmentation was a function of ground-to-nozzle distance, nozzle configuration, and nozzle pressure ratio. With a conventional circular nozzle a thrust reduction of 15 to 40 percent due to ground effect was obtained. The degree of thrust reduction was primarily a function of nozzle pressure ratio and ground-to-nozzle distance.
Author
- Von Glahn, Uwe H
Keywords
- BOOSTER SYSTEMS AUXILIARY - GAS TURBINES
- OPERATING PROBLEMS, GENERAL
- PUMPS, JET AND THRUST AUGMENTORS
Citation: Von Glahn, Uwe H (2019). Exploratory Study of Ground Proximity Effects on Thrust of Annular and Circular Nozzles. Legacy CDMS. NASA NTRS ID 19930084741. https://ntrs.nasa.gov/citations/19930084741 ↗