User Jake Blocker

42 votes

1 answer

7k views

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

asked May 30, 2017 at 0:50

31 votes

3 answers

6k views

Why cool engines with fuel as opposed to oxidizer?

engine-design temperature

asked May 4, 2017 at 3:02

25 votes

1 answer

5k views

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

launch spacex artificial-satellite millitary classified

asked Sep 11, 2017 at 22:19

24 votes

1 answer

2k views

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

spacex merlin-1d

asked Mar 26, 2017 at 19:37

22 votes

3 answers

4k views

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

spacex reentry reuse grid-fins

asked Mar 31, 2017 at 5:51

20 votes

2 answers

6k views

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

launch spacex falcon-9 launch-site

asked Jul 18, 2017 at 17:44

19 votes

2 answers

4k views

More efficient SpaceX landings?

spacex falcon-9 vertical-landing

asked Mar 8, 2017 at 16:25

15 votes

1 answer

1k views

Why are launch escape towers jettisoned early?

launch crewed-spaceflight launch-escape-system

asked Jul 31, 2017 at 20:19

14 votes

1 answer

4k views

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

launch crewed-spaceflight

asked Jul 26, 2017 at 23:32

11 votes

2 answers

2k views

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

mars crewed-spaceflight

asked Aug 8, 2017 at 16:04

10 votes

1 answer

399 views

Could Dragon 1.0 be used as an emergency Earth return vehicle

crewed-spaceflight reentry dragon

asked Jun 1, 2017 at 20:38

9 votes

3 answers

2k views

Is ISP all there is to engine efficiency?

rockets engines engine-design specific-impulse

asked May 28, 2017 at 4:31

8 votes

1 answer

3k views

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

spacex vacuum

asked Mar 18, 2017 at 4:16

8 votes

1 answer

359 views

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

engine-design nozzle

asked Jul 20, 2017 at 5:31

7 votes

2 answers

736 views

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

launch spacex testing falcon-heavy

asked Aug 5, 2017 at 3:18

7 votes

1 answer

2k views

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

mars propulsion probe skycrane

asked Nov 1, 2017 at 18:27

7 votes

2 answers

1k views

Does SpaceX plan to repair SLC-40?

spacex falcon-9 launchpad falcon-heavy

asked Feb 23, 2017 at 16:25

7 votes

1 answer

2k views

How can Bielliptic transfers be more efficient than Hohmann transfers?

orbital-mechanics hohmann-transfer

asked Jul 7, 2017 at 20:53

6 votes

2 answers

816 views

Why is OA-7 launching atop an Atlas V?

launch spacecraft low-earth-orbit

asked Mar 9, 2017 at 20:59

6 votes

1 answer

2k views

How does tank pressurization work?

propulsion spacecraft helium

asked Mar 15, 2017 at 1:40

5 votes

1 answer

2k views

Why are some rockets orange?

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

asked May 8, 2017 at 20:18

5 votes

1 answer

406 views

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

launch spacex engines

asked Oct 23, 2017 at 2:27

3 votes

1 answer

313 views

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

rockets propulsion

asked Feb 12, 2018 at 3:39

3 votes

1 answer

179 views

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

spacex falcon-9 reuse component-refurbishing

asked Mar 30, 2018 at 17:56

3 votes

1 answer

125 views

Rocket engine power vs. Sound

propulsion fuel engine-design

asked Jun 9, 2018 at 20:49

3 votes

1 answer

267 views

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

mars crewed-spaceflight

asked Aug 7, 2017 at 20:10

3 votes

2 answers

521 views

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

the-moon nasa

asked Aug 8, 2017 at 3:00

3 votes

2 answers

429 views

SpaceX NROL-76?

spacex falcon-9

asked Apr 5, 2017 at 18:25

2 votes

1 answer

502 views

What are the differences between the SpaceX Merlin 1D and 1D+ engines?

spacex engines merlin-1d

asked Feb 9, 2017 at 17:33

2 votes

1 answer

453 views

KNO3 as reverse hybrid oxidizer?

rockets propulsion

asked Jul 9, 2017 at 23:41

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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 will the Falcon Heavy maiden flight launch as its payload?

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

Does SpaceX plan to repair SLC-40?

How can Bielliptic transfers be more efficient than Hohmann transfers?

Why is OA-7 launching atop an Atlas V?

How does tank pressurization work?

Why are some rockets orange?

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

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

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

Rocket engine power vs. Sound

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

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

SpaceX NROL-76?

What are the differences between the SpaceX Merlin 1D and 1D+ engines?

KNO3 as reverse hybrid oxidizer?