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Oliver Thompson——Works at the International Renewable Energy Agency, Lives in Abu Dhabi, UAE.
Time Delay. The last number on an engine is the time delay, in seconds, to activation of the recovery system. The propellant in a model rocket typically burns up in about 1 second. At that point, the rocket is still moving upward at a high rate of speed.Apr 8, 2012read more >>+119962023-06-13 15:40:27
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