Accession Number:

ADA050593

Title:

Aerodynamic Design and Analysis of Propellers for Mini-Remotely Piloted Air Vehicles. Volume 1 Open Propellers

Descriptive Note:

Final rept. Jun 1976-Aug 1977

Corporate Author:

BORST (HENRY V) AND ASSOCIATES WAYNE PA

Personal Author(s):

Report Date:

1978-01-01

Pagination or Media Count:

131.0

Abstract:

This report prsents the design and anlysis of propellers applied to mini-remotely piloted vehicles. Modifications to the airfoil data used for predicting the profile drag losses were necessary to account for operation at the low reynolds number encountered by mini-RPV propellers. Due to the lack of two-dimensional airfoil data, the correction to the drag coefficient is Using the revised methods of propeller analysis, six optimum propellers were designed and analyzed for two different RPVs. The analysis showed that improved performance can be obtained with the new designs. A ducted propeller with sufficiently low blade tip clearances was also analyzed. This configuration appears to have superior performance to the open type propellers considered, as well as a potential for reduced noise. Propellers with variable blade angles also appear to offer advantages from both the noise and performance standpoints. Volume II presents the ducted-propeller design for the Mini-RPV.

Subject Categories:

  • Pilotless Aircraft
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE