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Results tagged with launch-vehicle
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user 36625
Questions about a craft used to propel payloads into space, usually a rocket-powered vehicle
2
votes
1
answer
140
views
Accidents where discarded stages are propelled by vaporized propellant?
Falcon 1 flight 3 failed when propellant vaporized in the detached first stage's engine, causing it to slam into the second stage. Has this happened to any other launch vehicle? Do launch vehicles usu …
8
votes
2
answers
487
views
How will Starship get ullage during launch?
All the Starship air-starts up to this point have been landing burns using small header tanks which gave less ullage requirements, but I can't recall any mention of how Starship settle it's propellant …
1
vote
0
answers
78
views
What if satellites could be recovered during a launch failure? [duplicate]
How heavy would a capsule have to be to return a satellite safely to earth in the event of a launch failure? Would a satellite survive the loads endured by astronauts during an abort? If not, is there …
1
vote
1
answer
525
views
Why was the launchpad not destroyed during Super Heavy test firings?
It's becoming clear now that the 4/20 launch devastated the launchpad, leaving a massive crater and flinging debris - perhaps into the booster itself.
But why did this not happen during test firings o …
1
vote
2
answers
350
views
Why didn't SpaceX scrub the 4/20 Starship launch when they saw the launch pad being shredded?
While Starship took to the skies on its maiden flight, the slow build of power started to devastate the launch pad (or Stage Zero as SpaceX refers to it) and surrounding area with debris. Though curr …
11
votes
1
answer
4k
views
Does a fully loaded Starship really have a thrust to weight ratio less than 1 at sea level?
If Superheavy fails during launch (or even fails to launch in an unsafe way) the Starship itself might well be able to just light its engines and fly a suitable suborbital trajectory
https://space.s …
5
votes
0
answers
196
views
Low-pressure pump-fed rocket engine?
I saw the above suggested in LEO on the Cheap. In P.130 it says:
A compromise between high-performance/lightweight pump-fed vehicle designs
and cost-optimized pressure-fed vehicles with heavier struc …
1
vote
0
answers
52
views
Launch excapse system for satellite payloads? [duplicate]
Once a rocket lifts off, there is usually no abort mode that does not involve the destruction of the rocket, and on a satellite launch, the payload.
Therefore, expendeble satellite launchers are quite …
5
votes
1
answer
435
views
Why wasn't Buran mounted on top of Energia?
Since unlike the Shuttle, the Buran did not carry the main engines, why was it not mounted on top of the external tank equivalent - Energia's core stage?
And even better, why wasn't Energia's second s …