User Johnny Robinson

38

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3

answers

3k

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Flung debris in lunar landing

Nov 15 '17 at 7:03 Community♦ 1

1

27

votes

2

answers

528

views

How deep could a lunar mine go?

the-moon natural-resources

Aug 18 '19 at 23:54 uhoh 119k

26

votes

6

answers

9k

views

Why aren't rockets built with truss structures inside their fuel & oxidizer tanks to increase structural strength?

max-q tanks design

Aug 13 '19 at 22:27 ThomasAHawk 41

1

16

votes

2

answers

3k

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Why will the BFS reenter broadside rather than engine first?

spacex reentry heat-shield spacex-starship

Apr 11 '18 at 14:24 Saiboogu 5,834

2

10

votes

3

answers

549

views

Liquid settling in tanks during orbital refueling

fuel-depots refueling

Jul 18 at 19:06 Organic Marble 131k

10

votes

2

answers

1k

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Range of BFR as single stage

spacex rockets trajectory ballistics spacex-starship

Mar 14 '18 at 16:37 Roderick Reilly 1

3

10

votes

3

answers

4k

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Overcoming pressure differential to feed fuel into rocket engines

fuel engine-design

Jan 20 '17 at 7:00 SF. 48.5k

8

votes

2

answers

670

views

Progress of the raptor engine

spacex testing raptor

Aug 24 '19 at 12:51 Jan van Oort 812

2

8

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1

answer

2k

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Constant lunar sub-surface temperature

the-moon colonization geology

Apr 7 '18 at 15:20 Community♦ 1

8

votes

0

answers

333

views

For a launch, how is safe viewing distance determined?

launch safety failure

Feb 4 '18 at 16:51 Johnny Robinson 4,214

8

votes

1

answer

319

views

Lunar launch pad cooling

the-moon launchpad thermal

Oct 18 '17 at 22:07 Nathan Tuggy 4,422

7

votes

1

answer

91

views

Are new Falcon cores still being built at Hawthorne?

falcon-9 spacex-starship

Apr 15 at 23:27 uhoh 119k

7

votes

1

answer

460

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When will they be landing Dragon retropropulsively?

spacex landing dragon

Dec 19 '17 at 13:15 PearsonArtPhoto♦ 110k

1

7

votes

1

answer

110

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Meteor color hints at chemistry

chemistry entry-descent-landing meteors

Feb 9 '17 at 10:31 Rory Alsop 12.6k

7

votes

2

answers

180

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Angle of meteoroid and debris strikes on ISS

iss debris meteoroid

Sep 19 '16 at 16:49 Tristan 15k

6

votes

0

answers

102

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Can astronauts in currently planned pressure suits survive a cabin which cannot be repressurized?

spacesuits eva docking-port emergency

Feb 13 '20 at 6:29 Johnny Robinson 4,214

6

votes

3

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2k

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New BFR Engine arrangement

spacex raptor spacex-super-heavy

Jul 1 '19 at 5:31 Community♦ 1

5

votes

1

answer

189

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How much fuel, (in tons) will a dedicated tanker be able to deliver to a starship in LEO?

spacex-starship mass-fraction refueling tanker

Dec 23 at 17:00 Community♦ 1

2

5

votes

0

answers

220

views

Power supply for StarShip?

spacex solar-power power spacex-starship

Nov 1 '19 at 4:51 Tim Li 99

2

5

votes

2

answers

487

views

Active liquid cooling for heat shield

spacex-starship heat-shield liquid-cooled

Oct 22 '19 at 13:19 uhoh 119k

5

votes

1

answer

244

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Has there been any program to develop tiny pod-like vehicles with manipulator arms for extra-vehicular activities?

eva orbital-assembly maintenance

Jan 4 '17 at 2:37 Jerard Puckett 7,201

4

votes

1

answer

208

views

Could a tank of water under the launch pad be used instead of a flame trench?

launch design-alternative launchpad flame-trench

Dec 4 at 9:19 Uwe 35.9k

4

votes

3

answers

160

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Redeployable solar arrays. Do they exist? or are they being worked on?

solar-power payload-deployment reuse

Jan 4 '20 at 8:39 GremlinWranger 11.8k

3

votes

2

answers

273

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Could a pressure suit be used for a short emergency EVA?

spacesuits eva emergency

Apr 24 at 1:41 PearsonArtPhoto♦ 110k

1

3

votes

1

answer

570

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What will the heat shield on the BFS be made of

reentry orbital-maneuver heat-shield spacex-starship

Oct 22 '19 at 5:15 Camille Goudeseune 7,056

3

votes

1

answer

89

views

Have carbonaceous chondrite meteors been found on the moon?

the-moon colonization carbon

Sep 27 '19 at 4:28 uhoh 119k

1

3

votes

1

answer

322

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Best orientation for docking

orbital-mechanics docking

Nov 16 '18 at 7:26 uhoh 119k

1

3

votes

0

answers

492

views

Safety of carbon fiber oxygen tanks

oxygen tanks

Apr 10 '18 at 4:46 Johnny Robinson 4,214

3

votes

1

answer

150

views

Chemical resources on the moon in relation to human occupation

the-moon colonization mining natural-resources geology

Dec 22 '16 at 4:41 Nathan Tuggy 4,422

3

votes

2

answers

211

views

Power requirements for solar electric interplanetary vehicle

interplanetary power nuclear magnetoplasmadynamic

Aug 23 '16 at 21:25 asdfex 9,380

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36 Questions

Flung debris in lunar landing

How deep could a lunar mine go?

Why aren't rockets built with truss structures inside their fuel & oxidizer tanks to increase structural strength?

Why will the BFS reenter broadside rather than engine first?

Liquid settling in tanks during orbital refueling

Range of BFR as single stage

Overcoming pressure differential to feed fuel into rocket engines

Progress of the raptor engine

Constant lunar sub-surface temperature

For a launch, how is safe viewing distance determined?

Lunar launch pad cooling

Are new Falcon cores still being built at Hawthorne?

When will they be landing Dragon retropropulsively?

Meteor color hints at chemistry

Angle of meteoroid and debris strikes on ISS

Can astronauts in currently planned pressure suits survive a cabin which cannot be repressurized?

New BFR Engine arrangement

How much fuel, (in tons) will a dedicated tanker be able to deliver to a starship in LEO?

Power supply for StarShip?

Active liquid cooling for heat shield

Has there been any program to develop tiny pod-like vehicles with manipulator arms for extra-vehicular activities?

Could a tank of water under the launch pad be used instead of a flame trench?

Redeployable solar arrays. Do they exist? or are they being worked on?

Could a pressure suit be used for a short emergency EVA?

What will the heat shield on the BFS be made of

Have carbonaceous chondrite meteors been found on the moon?

Best orientation for docking

Safety of carbon fiber oxygen tanks

Chemical resources on the moon in relation to human occupation

Power requirements for solar electric interplanetary vehicle