ROTOR/WING

reportActive / Technical Report | Accession Number: AD0710425 | Open PDF

Abstract:

The report presents the technical status of the rotorwing concept of a stopped-rotor helicopter configuration. The configuration presents attractive performance characteristics for a high-speed VTOL aircraft. The ability to predict aerodynamic performance characteristics in all flight modes is substantiated by wind-tunnel tests. A major technical problem of 3-per-rev oscillating loads on the rotorwing pylon was minimized by the effective use of cyclic blade pitch during the high-advance-ratio portion of conversion. High values of oscillating blade-root moments were recorded during testing of a dynamic model. It is not known if there is a schedule of cyclic pitch that will minimize both pylon loads and blade-root loads simultaneously.

Author(s):
Briardy, F. J. ; Laforge, S. V. ; Neff, J. R.
Author Organization(s):
HUGHES TOOL CO CULVER CITY CA AIRCRAFT DIV
Descriptive Note:
Final technical rept.
Supplementary Note:
DOI: 10.21236/AD0710425
Pagination:
0080

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
HTC-AD-69-12A
Contract/Grant Number(s):
NONR-4588(00)
Project Number(s):
NR-212-162
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.6_Concepts; JCA_5_Command and Control; JCA_5.3_Planning; JCA_4_Logistics; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.3_Maintain; JCA_3.2.1_Kinetic Means; JCA_4.4.1_Food Service; JCA_4.4_Logistics Services
Modernization Areas:
Directed Energy; Quantum Science and Computing
Communities of Interest:
Air Platforms
Descriptor(s):
*CONVERTIBLE PLANES, *ROTARY WINGS, AUTOGYRO ROTORS, AUTOGYROS, HELICOPTER ROTORS, OSCILLATION, PERFORMANCE(ENGINEERING), VERTICAL TAKEOFF AIRCRAFT, WINGS
Field(s)/Group(s):
Helicopters, VSTOL
Keyword(s):
HELICOPTERS, *ROTOR WING AIRCRAFT, *STOPPABLE ROTORS
Report Date:
1970 Mar 01