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Measurement of the uh-60a hub large rotor test apparatus control system stiffness
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kufeld, Robert M. |
| Copyright Year | 2014 |
| Description | This purpose of this report is to provides details of the measurement of the control system stiffness of the UH-60A rotor hub mounted on the Large Rotor Test Apparatus (UH-60A/LRTA). The UH-60A/LRTA was used in the 40- by 80-Foot Wind Tunnel to complete the full-scale wind tunnel test portion of the NASA / ARMY UH-60A Airloads Program. This report describes the LRTA control system and highlights the differences between the LRTA and UH-60A aircraft. The test hardware, test setup, and test procedures are also described. Sample results are shown, including the azimuthal variation of the measured control system stiffness for three different loadings and two different dynamic actuator settings. Finally, the azimuthal stiffness is converted to fixed system values using multi-blade transformations for input to comprehensive rotorcraft prediction codes. |
| File Size | 5134557 |
| Page Count | 60 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140016747 |
| Archival Resource Key | ark:/13960/t4km4983n |
| Language | English |
| Publisher Date | 2014-02-01 |
| Access Restriction | Open |
| Subject Keyword | Large Rotor Test Apparatus Control System Stiffness Measurement of the Uh-60a Hub Azimuth Wind Tunnels Control Systems Design Helicopter Control Uh-60a Helicopter Stiffness Flight Control Rotating Stalls Aerodynamic Stalling Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
