Delta II Onboard Cam
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omg. i got chills while i was watching this video. that was beautiful!! i swear i even got teary eyed!!! beautiful simply beautiful!!
3 years ago 8
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IGNITION 2:35
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@novawarrior1 the delta II is a rocket family. Its like a boeing 747 so to speak, two have exploded but another ~135 have gone on to get to orbit successfully
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this is just awesome....almost looks unreal from 07:07 on!!! AWESOME!!!
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You can build SRBs for almost any thrust vs time curve with the right mandril shape when pouring the propellant. No mandril means the propellant burns from the bottom up with low, constant thrust. A cylindrical mandril gives a rising thrust curve as the burning surface area increases. Star-shaped mandrils are common - a lot of thrust at liftoff, then lower sustained thrust as the points burn down to a cylinder. And so on.
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@jonalululy I doubt it. Smaller rockets can be pressure fed but an engine this size requires turbopumps. In theory the turbopump speed could be changed but bad things sometimes happen to engines when you do this; eg the Apollo LM descent engine could not run between 65% and 100% thrust because of excessive nozzle erosion. So the thrust was kept at 100% until guidance called for less than 65% and then it dropped in a big step.
I suspect Delta thrust is controlled with SRB grain shaping.
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This comment has received too many negative votes show
This isnt the Delta II. The Delta II exploded after take-off
Cokeacolaproductions 3 years ago
Negative the last explosion of a delta II was back in like 1988, hundreds of launched since then, this is one of em.
This is a Delta II
xylicon 3 years ago 5
wasnt delta 2 the rocket that exploded in the air?
novawarrior1 3 years ago
It has exploded before but I believe its only had 2 failures since its maiden flight in 1989.
132 successful launches out of 134, thank you wikipedia.
xylicon 3 years ago 6