Page 3 - Combined_78_OCR

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Torque Control - of desired level.

Torque Measurement - of reading.

Cooling for Car - Cooling equipment may be needed for the rear wheel G J
and axle of the car©

Simulated Movement Under the Car - Highway magnitude air movement must
be provided under the car in order that tcst3 bo properly conducted.
Possible methods of accomplishment includo: (A) A belt under the car
to simulate a moving pavement. The belt should be synchronized with
the rear wheel rolls; (B) Lower the floor under the car to increase
under car air velocity; (C) Produce a vacuum under the car,to pro­
vide the proper under car airflow®

Tunnel Warm-up Time - Tho warm-up time should be no more than 30 min.
< ' The operating car will warm-up the tunnel air in that time. However,
• ’ additional heating units will be needed Tor outside air brought into
the tunnel and as a source of heat to warm up the tunnel duct work.

3. Instrumentation For Test Car

Automatic Throttle Control - To provide complete car speed control from
the Control Room.

RPM Measurement - The following RPM measurements must be made:

Engine RPM +y.% of reading.
>
.
Wheel RPM +1% of reading.
Q o c Cooling Fan RPM (measured by photo coll), of reading.
All RPM measurements should be displayed digitally.

Coolant Flow Measurement - A Mass Flow Meter should be provided to
measure coolant ma s flow rate, The range will be 50 to 500 lb./min.
G O
Readout should be G J hown digitally on the control panel. The
Pottermeter Mass Flow Meter might be acceptable for this application.

Coolant Temperature Measurement - The coolant temperature drop across
the core should be measured to accuracy of ^<»01oF. The output should
be displayed digitally on the Control Panel. A Quartz Crystal
Thermometer is extremely well suited for this application.

Torque Measurement — A torque meter will be needed to measure the
torque of the prop shaft® The output should bo displayed digitally
on the Control Panel.