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Dragon Abort Success
SpaceX showed off a little today. The abort test was a success, they had a cool fireball with the 1st stage booster, and most of all, they used two classic Centuri chutes and two classic Estes chutes!!!!
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#2
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I was wondering about those two ‘chute patterns.
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Bernard Cawley NAR 89040 L1 - Life Member SAM 0061 AMA 42160 KG7AIE |
#3
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Very nice test indeed! I wonder why they didn't do it at Max Q, as that would be the most stressing case.
I'm interested in reading more about the recovery operation. Dragon-2 has hypergolic propellants on the capsule, and those propellants react with sea water (ask any Russian sailor who crewed a Russian boomer with liquid-propellant SLBMs - at least two of those boomers sank during the Cold War). So interesting to confirm there were no issues with salt-water intrusion into the propellant system. |
#4
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Here's a link: https://www.youtube.com/watch?v=ARIZnaMXTEU Launch is at 18:40 min.'s in, chute deploy is @ 24:13.
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SAM #0031 |
#5
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Very cool. I cannot decide which pattern I like best. But the shroud line attachment is a bit different.
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Lee Reep NAR 55948 Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor In the Paint Shop: Nothing! Too cold! Launch-Ready: Farside-X, Maxi Honest John, Super Scamp |
#6
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It is easy for me. My first Saturn 1b and Saturn V kits were Centuri, so the Centuri pattern wins!
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#7
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First thing I noticed when the chutes popped. Loved that!
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Scott D. Hansen Ye Olde Rocket Shoppe - Your One Stop BAR Shoppe! Ye Olde Rocket Plans - OOP Rocket Plans From 38 Companies! Ye Olde Rocket Forum WOOSH NAR Section #558 |
#8
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Mine too. Matter of fact, Centuri released their ‘Apollo’ chutes (24” size) I believe sometime in latter ‘67, even before the Super Scale 1/45 Little Joe II, Saturn V, and Saturn 1b kits were released. They were patterned after the real Apollo chutes and would be available in each of the aforementioned kits over the next year and half or so; the Little Joe II in the summer of ‘68 and the Saturn V and Saturn 1b by early ‘69. Interesting that Centuri went with that pattern so relatively early in the Apollo program, as that was well ahead of the first manned flight by just about a year. They also offered that 24” chute in yellow and black, but I always like the red and white better. Earl
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Earl L. Cagle, Jr. NAR# 29523 TRA# 962 SAM# 73 Owner/Producer Point 39 Productions Rocket-Brained Since 1970 |
#9
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I was lucky to only have the red ones. I would have been mad to get another color with my Saturns. Until the point that I got the 1B, I only had a couple Centuri kits and they came with a black and yellow checkerboard-like pattern. I started out with Estes and didnt discover Centuri until later.
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#10
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Quote:
During the post-flight press conference, what you mentioned was brought up--that the abort initiation occurred, as far as they could tell, slightly after Max Q. I suppose it might have been a slight sensor "lag" or software mis-calibration issue, but the SpaceX and NASA folks said that they would look into it as part of the overall data analysis from the flight; in any event, it wasn't far enough "off-nominal" that any of them were disappointed by the results. As well: I wouldn't be surprised, given the Super Draco thrusters' seawater-reacting hypergolic propellants, if the abort software calls for "burn to depletion," or else "sequentially vent all remaining fuel and oxidizer after abort burn shutdown," to prevent such unwanted reactions after splashdown. There may be (and, I imagine, there are) similar procedures for getting rid of residual Super Draco propellants after a normal re-entry burn and re-entry, for the same reason.
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Black Shire--Draft horse in human form, model rocketeer, occasional mystic, and writer, see: http://www.lulu.com/content/paperba...an-form/8075185 http://www.lulu.com/product/cd/what...of-2%29/6122050 http://www.lulu.com/product/cd/what...of-2%29/6126511 All of my book proceeds go to the Northcote Heavy Horse Centre www.northcotehorses.com. NAR #54895 SR |
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