Application of the Initial Plume Angle Correlation to Correct Nozzle/aftbody Pressure Drag for Hot Exhaust Gas Effects.
Abstract
This report discusses the use of the initial plume angle correlation to correct cold exhaust jet nozzle/aftbody pressure drag for not exhaust jet effects. Examining a broad base of data, the initial plume angle correlation proved effective in accounting for exhaust gas temperature effects for moderate temperature increases and high nozzle pressure ratios. The correlation was not effective for low nozzle pressure ratios and for nozzle configurations which have highly separated external flow. Also included are descriptions and results from other sources of hot exhaust jet data relating to ratio of specific heat effects, temperature effect on exhaust plume spreading, and the effect of body heating on external nozzle boattail performance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1976
- Accession Number
- ADA037471
Entities
People
- Douglas L. Bowers
Organizations
- Flight Dynamics Laboratory