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Quote:Don't know about the camera, but I do know all rockets vibrate - a lot.
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Quote:Quote:Don't know about the camera, but I do know all rockets vibrate - a lot. I know that a liquid fueled rocket, with all the pumps and gizmos that accompany liquid fuel, will have a lot of vibration. It's especially noticeable when thrust/weight ratios are just slightly over 1, so acceleration is rather slow in the early state of liftoff. But, will an all solid fuel system, with no moving parts, and a thrust/weight ratio that start at 12.5, rapidly increases to 22 only 8 seconds later, have that much vibration?Probably not......
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Quote:There was one bug in his launch - something MELTED from friction and partially covered the camera lens!You know you've got a fast rocket when the FRONT end melts!-drl
Quote:Also amazing is that the rocket, going as fast as it was, did not spin about its axis at power-drill speeds. This testifies to extremely accurate machining of the chamber and the guidance fins.
Quote:Liquid fueled rockets can be shut down,maybe not on the "shoestring budget" of this design but the solid fuel rascals can't AFAIK. I'm still stunned this was the propulsion system chosen,and yes I'd vote for a very sophisticated image stabilization system used,and maybe not so-consumer grade.Maybe I didn't look hard enough but I only saw 150 pounds of propellent used,but not the specific type.
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Quote:Propellant is Ammonium Perchlorate Composite Propellant (APCP)in a rubber binder with 8% metal powder using a Fin-O-Cylgrain configuration.