We changed our privacy policy. Read more.

Questions tagged [stage-separation]

Questions covering how different parts of a rocket with propulsion (stages) of a rocket disconnect from each other.

9 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
6
votes
0answers
87 views

How common is the ejection of small objects during final stage separation?

Source: Crew-2 launch; YouTube (timestamp link) That object seen moving right to left is the reason I ask. By playing the video frame-by-frame, it seems like it's a small object close to the camera ...
6
votes
0answers
178 views

What's the sudden pitching of Rocket Lab's 'It's Business Time" launch at separation?

In today's Rocket Lab launch of the "It's Business Time" mission, there was a substantial and swift change in attitude upon stage separation. It looks scary. I understand that The first ...
5
votes
0answers
135 views

Why did Tianwen-1 payload separate upside down?

China recently launched its Mars exploration mission Tianwen-1. Separation of the payload from the second (or third?) stage can be seen in a post-launch news clip. In this clip, the computer animation ...
4
votes
0answers
141 views

Marman vs collet seperation mechanism

The Marman and the Collet mechanisms are used for stage separation in rockets and launch vehicles. Which of these is most efficient, cost wise, weight wise and ease of usability wise? Which of the ...
3
votes
0answers
173 views

What is the largest energy stored in a spring or other stress-based energy storage device that's ever been put in space?

The question What is the largest delta-v ever produced in space from mechanically stored energy? asks of course about the delta-v produced, but here I'm asking about the largest amount of stored ...
3
votes
0answers
73 views

Why GSLV uses different stage seperation mechanism for their different varients

Why GSLV mk II is using Marman mechanism for stage separation but GSLV mk III is using Collet mechanism for stage separation?
2
votes
0answers
107 views

When were "2nd stage pushers" first used?

The question Falcon 9 2nd stage pusher; how far does it continue to extend as it accelerates separation? includes (and further explains) the GIF below. Question: What was the first use of a "2nd ...
1
vote
0answers
30 views

Blue Origin New Glenn/Shepard Stage Separation: Linear Charges or Pneumatic Pushers?

Falcon 9 uses pneumatic pushers for stage 1 separation presumably because it helps with reusability---even though linear charges are far more extensively space-proven. So I'm wondering, since New ...
1
vote
0answers
50 views

Mass/weight information about stage separation mechanism

How can I get mass/weight information about rocket stage separation mechanisms that are used in multi-stage rockets? I plan to create an excel table to compare stage separation mechanisms by weight ...