Reynolds Number Effects on the Boattail Characteristics of a Simulated Nacelle at a Mach Numer of 0.8.
Abstract
The effect of Reynolds number on the boattail drag of three simulated afterbody configurations is presented for zero angle of attack for a Mach number of 0.8. The boattail pressure drag for one of the configurations is shown to first decrease, then significantly increase, as the Reynolds number increases. The behavior is explained by the regular variation of pressures in regions of the boattail. The mechanism governing this behavior is discussed and is partially predicted from state-of-the-art theoretical techniques. The influence of model installations and test techniques is shown to have a marked effect on the level of the drag.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1974
- Accession Number
- ADA004803
Entities
People
- Ted Dansby