ON THE AERODYNAMIC DESIGN OF PROPELLERS AND DUCT SYSTEMS FOR GROUND EFFECT VEHICLES

reportActive / Technical Report | Accession Number: AD0274159 | Open PDF

Abstract:

An analytical and experimental investigation was performed to establish design methods for propeller and duct systems operating in ground effect. Methods are formulated for the calculation of propeller-in-duct performance. A simple analysis is made of the effect of exit nozzle velocity distribution and it is found that a constant nozzle velocity results in a maximum lift to power ratio. A qualitative analysis is made also of the duct efficiency. The similarity parameters of ground effect machines are determined. The effect of various geometric and operational parameters on the internal performance of propeller-duct systems in the proximity of the ground were studied. Maximum over-all internal efficiencies of 78 for an axially symmetric ducting system and 68 for a curved duct system were obtained.

Author(s):
Pruyn, Richard R. ; Perlmutter, A. A. ; Miller, N.
Author Organization(s):
KELLETT AIRCRAFT CORP CAMDEN NJ
Pagination:
0141

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited. Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
208-A-90-1
Contract/Grant Number(s):
DA-44-177-TC-524
Monitor Series:
TRECOM
 Subject Terms
Joint Capability Areas:
JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_5_Command and Control; JCA_5.3_Planning; JCA_4.5.4_Requirements Definition; JCA_4.5_Operational Contract Support; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support; JCA_1_Force Support; JCA_6_Net Centric; JCA_6.4.1_Secure Information Exchange
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*FLYING PLATFORMS, *SHROUDED PROPELLERS, *DUCTS, PRESSURE, NOZZLES, JET FLOW, INDUCTION SYSTEMS, DUCT INLETS, GROUND EFFECT, DUCTED FANS, CONFIGURATIONS, MATHEMATICAL ANALYSIS, VELOCITY, THRUST
Field(s)/Group(s):
Surface Effect Vehicles and Amphibious Vehicles, Aerodynamics
Report Date:
1962 Jan 15