Quote from: Prober on 12/08/2016 11:25 amQuote from: ZachS09 on 12/07/2016 11:26 pmT+32 minutes, 34 seconds. SECO-2 confirmed.The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.Ok Zach how many RL-10's are left in the stockpile ?It's today's question I have no clue. Sorry.
Quote from: ZachS09 on 12/07/2016 11:26 pmT+32 minutes, 34 seconds. SECO-2 confirmed.The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.Ok Zach how many RL-10's are left in the stockpile ?It's today's question
T+32 minutes, 34 seconds. SECO-2 confirmed.The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.
Quote from: ZachS09 on 12/08/2016 12:06 pmQuote from: Prober on 12/08/2016 11:25 amQuote from: ZachS09 on 12/07/2016 11:26 pmT+32 minutes, 34 seconds. SECO-2 confirmed.The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.Ok Zach how many RL-10's are left in the stockpile ?It's today's question I have no clue. Sorry. Nine more B-2's to fly.
Quote from: WHAP on 12/27/2016 12:53 amQuote from: ZachS09 on 12/08/2016 12:06 pmQuote from: Prober on 12/08/2016 11:25 amQuote from: ZachS09 on 12/07/2016 11:26 pmT+32 minutes, 34 seconds. SECO-2 confirmed.The RL-10B-2 engine has officially shut down, ending tonight's powered flight. Separation of WGS-8 will occur 9 minutes and 10 seconds after SECO-2.Ok Zach how many RL-10's are left in the stockpile ?It's today's question I have no clue. Sorry. Nine more B-2's to fly.How do you know there are nine RL-10B-2 engines left? Is there a source for this?
QuoteOrbital ATK @OrbitalATK 9m9 minutes agoOrbital ATK team at the launch pad yesterday preparing for today’s #DeltaIV launch of #WGS8. @ulalaunchhttps://twitter.com/OrbitalATK/status/806474511587622912
Orbital ATK @OrbitalATK 9m9 minutes agoOrbital ATK team at the launch pad yesterday preparing for today’s #DeltaIV launch of #WGS8. @ulalaunch
Quote from: FutureSpaceTourist on 12/07/2016 11:35 amQuoteOrbital ATK @OrbitalATK 9m9 minutes agoOrbital ATK team at the launch pad yesterday preparing for today’s #DeltaIV launch of #WGS8. @ulalaunchhttps://twitter.com/OrbitalATK/status/806474511587622912I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks...
One is fixed and the other gimbals
Quote from: FutureSpaceTourist on 12/07/2016 11:35 amI ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... two are are fixed nozzle and two vectorable nozzleSources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)
I ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks...
Quote from: russianhalo117 on 08/12/2017 12:24 amQuote from: FutureSpaceTourist on 12/07/2016 11:35 amI ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... two are are fixed nozzle and two vectorable nozzleSources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)They must REALLY need the vectoring. Compared to the fixed thrust model, the vectoring one is 1000 lbs (450 kg) heavier, slightly less ISP, and surely more expensive and less reliable. Atlas, I believe, does not need vectoring on its solids. So why does Delta IV?
Quote from: LouScheffer on 08/12/2017 01:28 amQuote from: russianhalo117 on 08/12/2017 12:24 amQuote from: FutureSpaceTourist on 12/07/2016 11:35 amI ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... two are are fixed nozzle and two vectorable nozzleSources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)They must REALLY need the vectoring. Compared to the fixed thrust model, the vectoring one is 1000 lbs (450 kg) heavier, slightly less ISP, and surely more expensive and less reliable. Atlas, I believe, does not need vectoring on its solids. So why does Delta IV?For roll control. RD-180 has 2 nozzles.
Quote from: Newton_V on 08/12/2017 01:55 amQuote from: LouScheffer on 08/12/2017 01:28 amQuote from: russianhalo117 on 08/12/2017 12:24 amQuote from: FutureSpaceTourist on 12/07/2016 11:35 amI ran across the image in the post I am quoting, and I have a question about the Delta IV M+ SRBs... Why is one nozzle more protected than the other? (see red arrows in image) They both seem identical otherwise, and aren't they separated at the same time? Thanks... two are are fixed nozzle and two vectorable nozzleSources: 2016 OA Motor Catalog (Section D45 or Page 57 of 163) and Gunter's Space Page (http://space.skyrocket.de/doc_eng/gem-60.htm)They must REALLY need the vectoring. Compared to the fixed thrust model, the vectoring one is 1000 lbs (450 kg) heavier, slightly less ISP, and surely more expensive and less reliable. Atlas, I believe, does not need vectoring on its solids. So why does Delta IV?For roll control. RD-180 has 2 nozzles.But Delta-IV can launch without solids, so it has built-in roll control (turbo-pump exhaust). I'd then guess this does not have enough control authority to cover the torque potentially induced by thrust imbalances in non-vectoring solids.