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MiniSShot - First test firing of the Blast Tube Motor (BTM)
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2009/01/24 The Blast Tube Motor (BTM)   Randy Dormans 2009/01/24 Here is the ablative tube wrapped in paper insulation (to protect the aluminum motor casing) and sealed to the dummy midbulkhead.   Randy Dormans 2009/01/24 Here is a view looking down towards the bulkhead Rick Maschek 2009/01/24 The ablative tube originally looked like this: Rick Maschek 2009/01/24 BTM under full thrust: Rick Maschek 2009/01/24 The ablative tube after removal & cleaning:   Rick Maschek 2009/01/24 Here is a photo of the interior of the ablative tube after cleaning with low pressure water spray:   Rick Maschek 2009/01/24 And the interior after removal of the char layer:

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http://www.sugarshot.org/downloads/btm_01_24_09.mov