Go Back  PPRuNe Forums > PPRuNe Social > Jet Blast
Reload this Page >

SpaceX Falcon 9 Live Landing Attempt

Jet Blast Topics that don't fit the other forums. Rules of Engagement apply.

SpaceX Falcon 9 Live Landing Attempt

Old 13th Apr 2015, 20:06
  #21 (permalink)  
 
Join Date: Feb 2002
Location: UK
Age: 55
Posts: 2,755
Originally Posted by henry_crun View Post
NASA says two days to catch up with ISS, so that's sometime tomorrow.
Live feed on NASA TV now.
TURIN is offline  
Old 13th Apr 2015, 20:37
  #22 (permalink)  
Ecce Homo! Loquitur...
Thread Starter
 
Join Date: Jul 2000
Location: Peripatetic
Posts: 10,390
Launched scrubbed due to weather, another try tomorrow..
ORAC is offline  
Old 13th Apr 2015, 20:44
  #23 (permalink)  
 
Join Date: Feb 2002
Location: UK
Age: 55
Posts: 2,755
Scrubbed due to thunderstorms.
TURIN is offline  
Old 14th Apr 2015, 20:23
  #24 (permalink)  
sir
Basia Arma
 
Join Date: Apr 2001
Location: button moon
Posts: 43
Falcon is on the way, so far all ok. I caught a glimpse of the mission control crowd behind the windows sort of clapping and sort of looking disappointed - I wonder if stage 1 landing was a very near miss...?
sir is offline  
Old 14th Apr 2015, 20:34
  #25 (permalink)  
sir
Basia Arma
 
Join Date: Apr 2001
Location: button moon
Posts: 43
....confirmed by Elon Musk. They hit the ship but too hard for the stage to survive the impact. It'll get there I'm sure !
sir is offline  
Old 14th Apr 2015, 20:43
  #26 (permalink)  
 
Join Date: Aug 2010
Location: Frensham Surrey 51.143734 -0.79448986 SU 84426 38972
Age: 56
Posts: 246
Had a good view of the capsule passing over here in the south of England as it was quite bright and on a lovely cloudless night.

Our children watched the launch then we all headed outside to watch it pass over 20 minutes later. They were most impressed to see science/spaceflight in action
Wokkafans is offline  
Old 15th Apr 2015, 03:00
  #27 (permalink)  
 
Join Date: Jun 2009
Location: Canada
Posts: 451
Video from chase plane is here: https://vine.co/v/euEpIVegiIx

Looks like they almost got it this time, but it was still tilting a little when it landed (or maybe that was the start of tipping over).
MG23 is offline  
Old 15th Apr 2015, 20:59
  #28 (permalink)  
 
Join Date: Jun 2009
Location: Canada
Posts: 451
Apparently they think it was due to the throttle valve sticking so it wasn't responding as fast as expected; which would explain the apparent overcompensation in the video. In that case, hopefully the next time will work.
MG23 is offline  
Old 15th Apr 2015, 21:07
  #29 (permalink)  
 
Join Date: Jan 2015
Location: Coasting South
Age: 65
Posts: 54
Come on guys get it to work, after all it's not rocket scien...
hiflymk3 is offline  
Old 16th Apr 2015, 01:34
  #30 (permalink)  
 
Join Date: Jun 2009
Location: Canada
Posts: 451
New video, and much better resolution. That looks really close to a survivable landing:

https://www.youtube.com/watch?v=BhMSzC1crr0
MG23 is offline  
Old 16th Apr 2015, 07:42
  #31 (permalink)  
Ecce Homo! Loquitur...
Thread Starter
 
Join Date: Jul 2000
Location: Peripatetic
Posts: 10,390
SpaceX To Land Reusable Launcher on Ground

COLORADO SPRINGS, Colo. SpaceX hopes that the next attempt to land its Falcon 9 reusable launch vehicle will occur on solid ground. While not providing details of when or where that attempt would occur, Gwynne Shotwell, SpaceX President and COO, told Defense News on Wednesday that the company hopes its next attempted landing will take place on land, not at sea.

All tests of the reusable vehicle have occurred over water as a safety precaution, but the natural instability that occurs when a landing pad floating in the ocean has a very heavy rocket land on top of it has led to a series of near-misses for the technology. The most recent test of the technology occurred Tuesday, when the rocket appeared to land on target safely before tipping over. The hope is that the added stability of landing on ground would allow a safe landing.

"Just purely the boat moving, even in a low sea state, it's hard to imagine that vehicle is going to stay vertical," Shotwell said. "That vehicle is big and tall, compared to the itty-bity-greater-than-a-football-field-size ship."

She also downplayed the potential risk factors that led the company to attempt its landings over water in the first place. "The risk of damage to the public of ascent is far greater than return," she said. "There's a lot of propellant going up, and there's very little propellant coming back. "

She also noted that there will be a flight termination system in place in case something goes wrong. "It's a lot harder to think about blowing up that rocket when you're going up and it has a payload on board," Shotwell said. "But when it's coming back, if things look wonky, blow it up.".......
ORAC is offline  
Old 18th Apr 2015, 08:45
  #32 (permalink)  
Ecce Homo! Loquitur...
Thread Starter
 
Join Date: Jul 2000
Location: Peripatetic
Posts: 10,390
ORAC is offline  
Old 19th Apr 2015, 02:21
  #33 (permalink)  
 
Join Date: Jun 2009
Location: Canada
Posts: 451
Musk posted on Twitter, saying they've confirmed the problem was slow throttle response. So things are looking good for next time if they can fix that or work around it.
MG23 is offline  
Old 28th Jun 2015, 13:06
  #34 (permalink)  
 
Join Date: Mar 2015
Location: XFW, Germany
Posts: 125
Next try: Streamcoverage (NASA TV) and ticker at Live coverage: All systems go for SpaceX resupply launch | Spaceflight Now

SpaceX own stream will start in about one hour.
PAXfips is offline  
Old 28th Jun 2015, 14:25
  #35 (permalink)  
Ecce Homo! Loquitur...
Thread Starter
 
Join Date: Jul 2000
Location: Peripatetic
Posts: 10,390
Ooops......

Not sure if that was an auto-destruct, but it's gone, one way or another.....
ORAC is offline  
Old 28th Jun 2015, 14:26
  #36 (permalink)  
TWT
 
Join Date: Apr 2008
Location: troposphere
Posts: 715
Buggah !lllllll
TWT is offline  
Old 28th Jun 2015, 14:28
  #37 (permalink)  
Ecce Homo! Loquitur...
Thread Starter
 
Join Date: Jul 2000
Location: Peripatetic
Posts: 10,390
There did seem a lot of strange effects in the exhaust trail prior to failure, but they were calling thrust nominal at the time.
ORAC is offline  
Old 28th Jun 2015, 14:38
  #38 (permalink)  
 
Join Date: Mar 2015
Location: XFW, Germany
Posts: 125
http://i.imgur.com/VMqgXA9.jpg

Vehicle destroyed before MECO.

Launch replay: https://www.youtube.com/watch?v=PuNymhcTtSQ

Last edited by PAXfips; 28th Jun 2015 at 14:43. Reason: Video added
PAXfips is offline  
Old 28th Jun 2015, 15:43
  #39 (permalink)  
Below the Glidepath - not correcting
 
Join Date: Jun 2005
Location: U.S.A.
Posts: 1,657
It was a timing error. The mission computer was inexplicably set to July 4th and not June 28th.
Two's in is offline  
Old 28th Jun 2015, 17:51
  #40 (permalink)  
 
Join Date: Jun 2009
Location: Canada
Posts: 451
Originally Posted by ORAC View Post
There did seem a lot of strange effects in the exhaust trail prior to failure, but they were calling thrust nominal at the time.
They said something about excessive pressure in the second stage oxygen tank, so it's possible pieces of the second stage could have been falling off before they blew it up. Or maybe liquid oxygen leaking out?
MG23 is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.