User Jake Blocker

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Do booster stages run out of fuel, or are they purposefully shut off?

May 30 '17 at 5:55 Tony Delaney 101

2

30

votes

3

answers

6k

views

Why cool engines with fuel as opposed to oxidizer?

engine-design temperature

Dec 12 '19 at 21:30 Starfish Prime 6,192

25

votes

1

answer

5k

views

Does anyone who works at SpaceX know the paths of classified payloads?

launch spacex artificial-satellite millitary classified

Sep 12 '17 at 8:00 CommunityBot 1

24

votes

1

answer

2k

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Where is the TEA-TEB stored for the Merlin engines onboard Falcon 9?

spacex merlin-1d

Jun 9 '20 at 22:18 RaptorChief 1,225

1

22

votes

3

answers

3k

views

Why did the grid fin of the CRS-8/SES 10 booster burn?

spacex reentry reuse grid-fins

Jul 30 '19 at 2:18 Ryan 41

20

votes

2

answers

6k

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Why won't SpaceX launch a rocket for a month?

launch spacex falcon-9 launch-site

Jul 19 '17 at 20:50 geoffc 75.5k

19

votes

2

answers

4k

views

More efficient SpaceX landings?

spacex falcon-9 vertical-landing

Mar 8 '17 at 19:47 OrangePeel52 2,531

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votes

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answer

1k

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Why are launch escape towers jettisoned early?

launch crewed-spaceflight launch-escape-system

Nov 6 '18 at 3:56 DrSheldon 45.9k

1

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1

answer

3k

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What are the Grid fins on the Soyuz escape system used for?

launch crewed-spaceflight

Feb 21 at 23:37 Russell Borogove 157k

1

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2

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Are there any major flaws with the Mars Architecture used in the Martian?

mars crewed-spaceflight

Aug 14 '17 at 23:59 CommunityBot 1

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Could Dragon 1.0 be used as an emergency Earth return vehicle

crewed-spaceflight reentry dragon

Feb 27 '20 at 14:25 Machavity 5,543

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Is ISP all there is to engine efficiency?

rockets engines engine-design specific-impulse

Feb 4 at 22:49 Kozuch 1,295

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3k

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What is the ring at the bottom of the Merlin vacuum engine?

spacex vacuum

Mar 15 at 23:52 Goku 1

8

votes

1

answer

336

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TR-106 under-expansion in sea-level test?

engine-design nozzle

Jul 20 '17 at 15:52 Russell Borogove 157k

7

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What were the Curiosity sky-crane’s descent engines?

mars propulsion probe skycrane

Feb 19 at 2:05 Kozuch 1,295

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What will the Falcon Heavy maiden flight launch as its payload?

launch spacex testing falcon-heavy

Jan 5 '18 at 20:27 Hobbes 120k

7

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2

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1k

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Does SpaceX plan to repair SLC-40?

spacex falcon-9 launchpad falcon-heavy

Feb 24 '17 at 6:28 CommunityBot 1

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1

answer

2k

views

How does tank pressurization work?

propulsion spacecraft helium

Mar 28 at 18:21 Organic Marble 148k

1

6

votes

1

answer

2k

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How can Bielliptic transfers be more efficient than Hohmann transfers?

orbital-mechanics hohmann-transfer

Jul 8 '17 at 17:24 SF. 51.4k

6

votes

2

answers

814

views

Why is OA-7 launching atop an Atlas V?

launch spacecraft low-earth-orbit

Mar 9 '17 at 21:18 geoffc 75.5k

5

votes

1

answer

400

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Do Falcon 9 preflight static fire ignitions use up the engines' ignitors?

launch spacex engines

Oct 23 '17 at 19:16 Nathan Tuggy 4,452

5

votes

1

answer

2k

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Why are some rockets orange?

rockets atlas-v delta-iv-heavy delta-iv launch-system

May 9 '17 at 14:50 DylanSp 1,866

3

votes

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173

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Is a soot covered flight proven Falcon 9 lighter or heavier than a new falcon 9?

spacex falcon-9 reuse component-refurbishing

Mar 30 '18 at 18:27 geoffc 75.5k

3

votes

2

answers

514

views

How did the Apollo Moon rocks get away from NASA and into the public?

the-moon nasa

Mar 22 '18 at 0:15 Vikki 3,719

3

votes

1

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262

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What's the purpose of a manned flyby/orbit of Mars/Venus?

mars crewed-spaceflight

Aug 7 '17 at 21:12 Russell Borogove 157k

3

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2

answers

422

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SpaceX NROL-76?

spacex falcon-9

Apr 5 '17 at 20:44 jkavalik 5,007

2

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1

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108

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Rocket engine power vs. Sound

propulsion fuel engine-design

Jun 10 '18 at 22:09 Erin Anne 4,466

2

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What is the blue box that the Exp. 53 Astronuats/Cosmonauts carried with them?

launch crewed-spaceflight spacesuits identify-this-object sokol-spacesuit

Apr 9 '18 at 0:53 Organic Marble 148k

2

votes

1

answer

277

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Why haven’t upper stages used the RL-60 engine?

rockets propulsion

Feb 12 '18 at 4:01 Russell Borogove 157k

2

votes

1

answer

439

views

KNO3 as reverse hybrid oxidizer?

rockets propulsion

Oct 17 '17 at 2:43 Michael 21

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35 Questions

Do booster stages run out of fuel, or are they purposefully shut off?

Why cool engines with fuel as opposed to oxidizer?

Does anyone who works at SpaceX know the paths of classified payloads?

Where is the TEA-TEB stored for the Merlin engines onboard Falcon 9?

Why did the grid fin of the CRS-8/SES 10 booster burn?

Why won't SpaceX launch a rocket for a month?

More efficient SpaceX landings?

Why are launch escape towers jettisoned early?

What are the Grid fins on the Soyuz escape system used for?

Are there any major flaws with the Mars Architecture used in the Martian?

Could Dragon 1.0 be used as an emergency Earth return vehicle

Is ISP all there is to engine efficiency?

What is the ring at the bottom of the Merlin vacuum engine?

TR-106 under-expansion in sea-level test?

What were the Curiosity sky-crane’s descent engines?

What will the Falcon Heavy maiden flight launch as its payload?

Does SpaceX plan to repair SLC-40?

How does tank pressurization work?

How can Bielliptic transfers be more efficient than Hohmann transfers?

Why is OA-7 launching atop an Atlas V?

Do Falcon 9 preflight static fire ignitions use up the engines' ignitors?

Why are some rockets orange?

Is a soot covered flight proven Falcon 9 lighter or heavier than a new falcon 9?

How did the Apollo Moon rocks get away from NASA and into the public?

What's the purpose of a manned flyby/orbit of Mars/Venus?

SpaceX NROL-76?

Rocket engine power vs. Sound

What is the blue box that the Exp. 53 Astronuats/Cosmonauts carried with them?

Why haven’t upper stages used the RL-60 engine?

KNO3 as reverse hybrid oxidizer?