Aircraft Research Association

ARA

Moveable Section and High Speed Diffuser

Moveable Section

Moveable Section

Section Closing

Models are assembled outside the tunnel on mobile carts in model preparation bays. The carts can then be wheeled into the Test Section once the moveable section has been pushed back. A system of tracks and turntables link the model bays to the tunnel test section.
 
The main photograph shows a model being installed in the tunnel. The moveable section (which forms part of the High Speed Diffuser) has been pushed back, and the model cart is sitting on a turntable and is being rotated into position before it is pushed into the test section on the left.

The photograph to the right shows the moveable section being closed after the model has been installed in the test section.

High Speed Diffuser

High Speed Diffuser

The high speed diffuser keeps the air flow smooth and efficient as it exits the Test Section at high speed.

The photograph shows the view of the high speed diffuser looking downstream from the Test Section.

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