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High
Attitude
Robotic
Sting
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HARS Information
The High Attitude Robotic Sting (HARS)
is a sting mounting system designed for high angle of attack
testing. The mechanism is able to position a model from -15°
to near +90° pitch with an accuracy within 0.01°, while
still keeping the model near the center of the test section.
HARS is compatible with the wind tunnel turntable, which
allows yaw angles of ±90°. Also, HARS can be mounted with a
mechanism to allow roll angles of ±180°. All model
positioning changes can be made from the control room while
the wind tunnel is still running. Tests that use the HARS
mount acquire data through an internal balance.
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HARS Range
Specifications |
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Angle Range |
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Pitch |
-15° |
+90° |
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Roll |
-180° |
+180° |
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Yaw |
-90° |
+90° |
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HARS Pictures
HARS with pitch, yaw, and roll control (above
and below)
Space Shuttle at a normal angle of attack
(below)
F-16 at normal (above) and high (below)
angles of attack
Internal Balance
An internal balance is placed inside the model when a sting
mount, such as HARS, is used.
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HARS Video
Click on
VIDEO to Start.
HARS with Model (courtesy of Lockheed Martin)
Change in Angle of Attack, Alpha: +10°
to 0°
Change in Roll Angle: -90° to
0°
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HARS Downloads
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Oran W. Nicks Low Speed Wind
Tunnel
Texas A&M University
1775 George Bush Drive West,
College Station, TX 77845
Phone: 979.845.1028
Fax: 979.845.8191
Email:
information@wind.tamu.edu
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