Page 1 - Combined_78_OCR

AZOGRAPH ECONOMY MASTER

INTER COMPANY CORRESPONDENCE

DATE
_ j:ov^ii_is67___
CODE
TO • NAME DEPT. DIVI3ION PLANT/OFFiCE
Re H. Smith 3770 Engineering Office Highland Park
FROM - NAME » , DEPT. DIVISION FLANT/OFFICE
C. J. Davis 7740 Engineering Office Highland Park I

ENGINE COOLING'-’J WIND TUNNEL SPECIFICATIONS
' CUOJECTi

Reference: Letter from J. P. Lindsay to A. D. Bosley of 6-12-t67> 1968
Capital Plan: Chassis Dynamometer Wind Tunnel.

The following specifications represent a best estimate of the require­
ments for the Engine Cooling Wind Tunnel. They are open for discussion
should it be felt that some adjustments would permit improved performance
or cost reduction.

The specifications for the Engine Cooling Wind Tunnel are covered under
the following categories:

Air Flow Requirements
H
Test Chamber
Instrumentation for Test Car
Auxiliary Facilities
Safety.

H Air Flow Requirements
e
Air Speed Range - 0 to 120 Mph.

Adjustability - Infinite adjustability over the entire air speed
range with fine adjustment.

Accuracy of Measurement - +1% of reading.

Indication of Reading - +1^ of reading.

Air Speed Measurement - This measurement can be made using a series
of pitot tubes (static and impact). They must be properly located
in the duct to give accurate air speed measurement. Another pitot
tube is'heeded-uridettthe uoil.pan and above the floor.

Air Speed Distribution +1% variation in speed across the duct between
20 and 120 Mph. There should be no vortex in the air as it enters
the entrance duct.