User Level River St

36 votes

Accepted

How close can I get to a rocket launch and not get killed?

answered Apr 11, 2015 at 23:05

32 votes

Has any spacecraft ever been flown manually to orbit?

answered Jan 12, 2019 at 7:06

18 votes

Why 31 engines for the BFR?

answered Feb 9, 2018 at 21:21

15 votes

Why is SpaceX's Raptor's design so simple in comparison to SSME?

answered Sep 11, 2019 at 19:28

14 votes

Could the Moon keep an atmosphere?

answered Nov 5, 2015 at 21:22

12 votes

Accepted

Why not use tap-off gas for repressurization for a simple rocket engine cycle?

answered Apr 3, 2016 at 21:40

11 votes

What are the top temperatures occurring during reentry?

answered Apr 29, 2016 at 11:07

11 votes

Has humanity launched a SSTO ... ever?

answered Nov 4, 2015 at 12:54

11 votes

How does SpaceX plan to deal with boiloff on the trip to Mars?

answered Dec 16, 2018 at 1:06

11 votes

Why aren't we sending quadcopters to mars?

answered Nov 28, 2016 at 22:31

10 votes

Accepted

What if an engine fails to ignite on Falcon Heavy?

answered Dec 29, 2017 at 21:39

10 votes

Why did it take so long for methane to be used as a rocket propellant?

answered Oct 2, 2015 at 2:50

8 votes

Accepted

What are some of the important parameters to scaling a liquid rocket engine

answered Aug 28, 2019 at 2:48

7 votes

Does the NK-33 engine require subcooled kerosene so cold that it turns to wax?

answered Sep 3, 2019 at 22:16

6 votes

Accepted

Why did August 28th, 2019 Starhopper's test roll so much to the left?

answered Aug 30, 2019 at 0:47

6 votes

Why is the American space program launch site based in Florida and not Texas?

answered Dec 9, 2016 at 13:09

5 votes

Accepted

Why did SpaceX choose vertical integration for Starship?

answered May 3, 2020 at 3:18

4 votes

Why not land SpaceX's Starship like a plane?

answered Feb 13, 2021 at 22:31

4 votes

Are there liquid fueled rocket boosters having coaxial fuel/oxidizer tanks?

answered Aug 15, 2019 at 23:35

3 votes

Do any rocket engines besides the F1 need/require baffles?

answered Sep 3, 2019 at 20:34

3 votes

Pressure inside Starship CH4 and LOX header tanks during entire Earth-Mars trip and landing on Mars?

answered Oct 8, 2021 at 14:36

3 votes

How much delta-v can we squeeze out of a gravitational slingshot and what factors limit it?

answered Dec 28, 2014 at 1:46

2 votes

How great is the stress on a rocket at max-q

answered Oct 18, 2017 at 12:17

2 votes

How many space launch vehicles are under development worldwide?

answered Sep 25, 2019 at 0:02

1 vote

Is it possible to use gases instead of liquids as fuel in a rocket engine?

answered Nov 11, 2019 at 3:26

1 vote

Why is SpaceX not also working on a smaller version of Starship?

answered Nov 23, 2019 at 11:20

1 vote

Finned heatsinks in space

answered May 23, 2020 at 0:24

1 vote

How much of an advantage do equator-proximal launch sites provide?

answered Feb 5, 2018 at 2:17

1 vote

Why rockets are not tossed up before launch

answered Jan 14, 2019 at 1:36

1 vote

Drone Racing on moon

answered Oct 25, 2016 at 20:52

Stack Exchange Network

31 Answers

How close can I get to a rocket launch and not get killed?

Has any spacecraft ever been flown manually to orbit?

Why 31 engines for the BFR?

Why is SpaceX's Raptor's design so simple in comparison to SSME?

Could the Moon keep an atmosphere?

Why not use tap-off gas for repressurization for a simple rocket engine cycle?

What are the top temperatures occurring during reentry?

Has humanity launched a SSTO ... ever?

How does SpaceX plan to deal with boiloff on the trip to Mars?

Why aren't we sending quadcopters to mars?

What if an engine fails to ignite on Falcon Heavy?

Why did it take so long for methane to be used as a rocket propellant?

What are some of the important parameters to scaling a liquid rocket engine

Does the NK-33 engine require subcooled kerosene so cold that it turns to wax?

Why did August 28th, 2019 Starhopper's test roll so much to the left?

Why is the American space program launch site based in Florida and not Texas?

Why did SpaceX choose vertical integration for Starship?

Why not land SpaceX's Starship like a plane?

Are there liquid fueled rocket boosters having coaxial fuel/oxidizer tanks?

Do any rocket engines besides the F1 need/require baffles?

Pressure inside Starship CH4 and LOX header tanks during entire Earth-Mars trip and landing on Mars?

How much delta-v can we squeeze out of a gravitational slingshot and what factors limit it?

How great is the stress on a rocket at max-q

How many space launch vehicles are under development worldwide?

Is it possible to use gases instead of liquids as fuel in a rocket engine?

Why is SpaceX not also working on a smaller version of Starship?

Finned heatsinks in space

How much of an advantage do equator-proximal launch sites provide?

Why rockets are not tossed up before launch

Drone Racing on moon