Investigation of Three Design Modifications of the NACA Injection Impeller in an R-3350 Engine
Abstract
An investigation was conducted to determine the effects of three design modifications of the original NACA injection impeller on the performance of an R-3350 engine. Different methods of injecting the fuel into the impeller air stream were studied and evaluated from the individual cylinder fuel-air ratios and the resulting cylinder temperatures. Each impeller was tested for a range of engine powers normally used in flight operation. The relatively simple design of the original injection impeller produced approximately the same mixture- and temperature-distribution characteristics as the modified impellers of more complex design. None of the modifications appreciably affected the manifold pressure, the combustion-air flow, nor the throttle angle required to maintain a given engine power.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 09, 1946
- Accession Number
- ADA801441
Entities
People
- Donald J. Michel
- Robert O. Hickel
Organizations
- Glenn Research Center