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Results tagged with launch
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user 18458
Questions regarding the takeoff or the liftoff phase of the flight of a rocket and the set of activities required for preparation of the launch vehicle leading to it.
16
votes
1
answer
4k
views
What are the Grid fins on the Soyuz escape system used for?
Why does the crewed version of the Soyuz rocket use grid fins on its launch escape system? It seems like extra weight to carry along during a portion of the flight. …
- 4,305
6
votes
2
answers
818
views
Why is OA-7 launching atop an Atlas V?
After replacing the old refurbished NK33 engines with newer RD-181 engines on Antares, and the successful OA-5 launch with Cygnus to the ISS, why is the next launch of Cygnus occurring on an Atlas V? …
- 4,305
5
votes
1
answer
431
views
Do Falcon 9 preflight static fire ignitions use up the engines' ignitors?
After a Falcon 9 has its static fire several days prior to the actual launch, are the TEA-TEB ignitors inside the engine replenished? …
- 4,305
15
votes
1
answer
1k
views
Why are launch escape towers jettisoned early?
Why are launch escape towers usually jettisoned fairly early in the flight? What if a problem went wrong during an upper stage burn and the escape tower had already been jettisoned? …
- 4,305
2
votes
1
answer
702
views
Ejection charges on Dnepr Rocket tube?
Graphic showing the launch sequence
Why did the Dnepr rocket still use the silo tube even after it became a commercial launcher? … Wouldn't it be cheaper to stop using the ejection charges and just launch it from Baikonur? …
- 4,305
20
votes
2
answers
6k
views
Why won't SpaceX launch a rocket for a month?
The last launch of a Falcon 9 (Intelsat 35e) took place on July 5, but the next launch of a falcon 9 (CRS-12) won't take place until August 10. … I also thought maybe SpaceX was fixing SLC-40 for the next falcon 9 launch but Spaceflightnow lists CRS-12 for 39A. …
- 4,305
7
votes
2
answers
755
views
What will the Falcon Heavy maiden flight launch as its payload?
I know that Elon Musk has stated that SpaceX will try to launch the "silliest thing imaginable" on the maiden flight of the Falcon Heavy, but will it be a Dragon capsule on top or a special SpaceX satellite …
- 4,305
42
votes
1
answer
7k
views
Do booster stages run out of fuel, or are they purposefully shut off?
When an expendable booster rocket stage nears the end of its burn, does the guidance computer shut the engine(s) off at a certain velocity/altitude for the mission, or does the stage completely exhaus …
- 4,305
13
votes
Accepted
How does one dogleg from Florida to a sun-synchronous orbit?
Here's a picture of a falcon 9 launch, I do not believe it's from NROL-76. The maneuver occurs towards the center of the screen.
And here's a picture of a dog's leg just to compare :) …
- 4,305
25
votes
1
answer
6k
views
Does anyone who works at SpaceX know the paths of classified payloads?
As SpaceX has launched both NROL-76 and OTV-5, does anyone at SpaceX know the trajectory of the vehicle, or is the falcon upper stage under the direct control of the Air Force?
- 4,305
2
votes
1
answer
3k
views
What is the blue box that the Exp. 53 Astronuats/Cosmonauts carried with them?
Looking at a video from Roscosmos on instagram, Exp. 52 Cosmonaut Sergey Ryazansky carried a blue box with him during his walk to the Soyuz rocket.
Upon looking at more videos of Astronauts boardin …
- 4,305