[Unified-mailman] Fwd: unified static test rig - open for business

[Howard Kleinwaks]

Students,
The test rig that you need to use for SP8 is now operational.  The props 
that you need to test are in the red bin next to the rig - please leave 
them there when you are finished.  If you have any questions, please ask.
-Howie

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>Date: Tue, 6 Apr 2004 14:45:26 -0400
>To: howiek at mit.edu, chipd at mit.edu, ccoleman at mit.edu
>From: Pete Young <pwyoung at MIT.EDU>
>Subject: unified static test rig - open for business
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>
>Howie, Carl, and Prof. C.:
>
>The Unified static test rig is open for testing. It's located in the Gelb 
>glassed in office across from the entrance to the instrumentation shop. 
>Some hints, tips, and pointers:
>
>1. SAFETY IS PARAMOUNT as the propellers are turning quite rapidly. BE 
>SURE TO AVOID GETTING STRUCK by the propeller when it's running.
>2. The test rig has been simplified from previous years when a transmitter 
>and receiver were required. With the exception of the main battery 
>connector, no other connectors need to be disturbed.
>3. To use:
>a) install a charged 8 cell pack - the same packs as used for flying.
>b) turn the on/off switch to 'on' - it's tie-wrapped to the horizontal 
>beam so may be hard to find the first time.
>c) on the readout box marked "Radio South", the PWM indicator should be 
>lit and indicating the pulse width. Rotate the rotary knob fully CCW to 
>reset the electronic speed control.
>d) Rezero the electronic scale so it reads 0.
>e) Rotate the Radio South box's knob CW to activate the motor. On the 
>smaller readout box, you'll read current, voltage, and watts.
>f) To read motor speed, the room lights have to be dimmed in order to use 
>the optical tachometer. Shine the flashlight so that the light reflects 
>off the propeller disc and into the tach's optical sensor. Reasonable RPM 
>values are between 2000 and 8000 rpm. Be sure that the tach is set to the 
>2 propeller setting (look at the icon in the readout gauge).
>
>Col Young
>--
>Peter W. Young, Col., USAF (ret.)
>Senior Lecturer
>Director of CDIO Initiatives
>phone: (617) 253-5340, fax (617) 253-4002
>
>Massachusetts Institute of Technology
>Department of Aeronautics and Astronautics
>77 Massachusetts Ave., 33-240
>Cambridge MA 02139