Page 7 - Combined_138_OCR

Range of the variables such as velocity, angle of yaw (■-') and tunnel total
/

pressure must be integrated into the schedule. A study will be conducted to

determine, under simulated highway conditions, what the most pr o valent cross-

wind will be (velocity and direction) thereby reducing the number O MH an C T Q b — O cn

that will need to be investigated. Estimates of forces and pressure to be

expe n ted will be made for data reduction purpose. Also, a data plotting

U) chedule will be formulated to assist in accurate planning of the test plan.

Model design will also be started during the phase, once the test param-

eters have been decided upon. Cost trade-off and feasibility studies will be

conducted to determine if existing 3/8-scale models can be utilized through

modification or if an entirely new sectionalized model should be constructed.

If a new model is to be constructed, a study will be made to determine the

feasibility of some scale other than 3/8-scale. In any event engineering draw-

mg will be made which will allow model construction.

(Chrysler, Huntsville Operations, has the capability to manufacture

models. In Tullahoma, Tennessee, 50 miles north of Huntsville, Micro-Craft

Corporation, is located. Micro-Craft specializes in manufacture of wind tunnel

models. To insure a competitive price, bids will be received from several shop

and a make-or-buy decision made. Close scrutiny will be maintained by CHO

aerodynamic personnel during the manufacturing phase. )

4. Test Conduct: With Central Engineering’s concurrence, Chrysler

Hunts ville will engage the tunnel(s) and make all necessary arrangements fo

the tests. Pre-test meetings will be held with the tunnel personnel to resolve

any difficult areas and to assure complete understanding and mutual agreement

on all test plans.