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Buran's 37KB instrument module.

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1989101672_2.jpg Buran crew module at TMZ.ThumbnailsThe Energia-M mockup during pad tests.

The 37KB module, also known as the BDP (Module for Additional Instruments) which flew in Buran's payload bay during the orbital test flight. The module registered over 600 flight parameters.

Aviation Week and Space Technology, October 16, 1989, p.73