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Low-speed wind-tunnel test of an unpowered high-speed stoppable rotor concept in fixed-wing mode
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Stroub, Robert H. Sung, Daniel Y. Lance, Michael B. |
| Copyright Year | 1991 |
| Description | An experimental investigation of the M85, a High Speed Rotor Concept, was conducted at the NASA Langley 14 x 22 foot Subsonic Tunnel, assisted by NASA-Ames. An unpowered 1/5 scale model of the XH-59A helicopter fuselage with a large circular hub fairing, two rotor blades, and a shaft fairing was used as a baseline configuration. The M85 is a rotor wing hybrid aircraft design, and the model was tested with the rotor blade in the fixed wing mode. Assessments were made of the aerodynamic characteristics of various model rotor configurations. Variation in configurations were produced by changing the rotor blade sweep angle and the blade chord length. The most favorable M85 configuration tested included wide chord blades at 0 deg sweep, and it attained a system lift to drag ratio of 8.4. |
| File Size | 20481303 |
| Page Count | 54 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910008720 |
| Archival Resource Key | ark:/13960/t8vb3299j |
| Language | English |
| Publisher Date | 1991-03-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Sweep Angle Lift Drag Ratio Fairings Fixed Wings Rotor Aerodynamics Aircraft Design Shafts Machine Elements Pitch Inclination Subsonic Wind Tunnels Wind Tunnel Tests Fuselages Helicopter Performance Wind Tunnel Models Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
