Questions tagged [booster]

A booster is a type of rocket used to assist in putting larger payloads into orbit. Use with the [rocket] tag any any other relevant launch vehicle tags

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15
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4answers
3k views

For a typical Shuttle mission, how much solid fuel is leftover at SRB separation?

If I understand correctly, solid booster rockets never expend literally all their fuel before jetissoning, because the burn rate slows way down in the end and it would take too long to spend it all, ...
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Why is there a “coasting” phase in some space launches?

During the PSLV (India's Polar Satellite Launch Vehicle) C24 launch on 4 April 2014, once stage 3 (PS3) had burned out, it wasn't immediately jettisoned, but instead there was a coasting phase for ...
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1answer
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Are side boosters sometimes angled even if they are symmetrically arranged?

When more than one side booster is added to a first stage to increase thrust and they are distributed uniformly around the core (as opposed to this and this) thrust does not seem to need to be angled. ...
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Are any “strap-on” boosters held in place by actual straps?

Have there been any strap-on boosters that are attached to the main body of a rocket with actual straps (like bands of metal or something similar), as the name implies? If not, what's the origin of ...
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Have there been any rockets that run seven engines at the same time?

Answers to Rockets with n-engines, for n = 1, 2, 3… cover all single digit nontrivial† values except for seven, so... Question: Have there been any rockets that run seven engines at the same time? ...
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When was the first strap-on booster used in spaceflight?

The first use of the term "strap-on" in Google Ngram viewer is in 1930 and presumably that wasn't about a booster being attached to a rocket for additional thrust at lift-off. When was a strap-on ...
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Rockets with n-engines, for n = 1, 2, 3… [closed]

The question Astronomical ABCD…! suggests a corollary for SXSE. I'm looking for one example of a rocket with $n$ first-stage engines, for each $n$ for which you can think of an example for. It should ...
16
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1answer
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Why is the Russian approach to the aerodynamics of their rockets different?

Russian rockets look like this: They flare them out at the bottom. With their newest rocket, the Proton, the flared shape is gone but the boosters still have caps that angle in towards the main ...
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4answers
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Do the propellant tanks of actual (not planned) expendable vehicles' upper stages have relief valves?

This question was inspired by the answer to this question. The answer, in part, states that overpressurization of propellant tanks is a cause of upper stage explosions, leading to orbital debris. ...
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1answer
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For a 3 booster rocket, why do they start with igniting the starboard booster, followed by the center and port?

In today's launch of the Delta IV heavy, it was stated that the starboard booster rocket would be ignited first, followed by the port and centre boosters. I would have thought this would give some ...
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How does Atlas V maintain stable flight with asymmetric solid rocket boosters?

While watching a launch of an Atlas V, I couldn't help but notice that the boosters were positioned asymmetrically. There was one booster on one side of the rocket, and two boosters on the other side. ...
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Are there liquid fueled rocket boosters having coaxial fuel/oxidizer tanks?

Reading this question, instead of stacking two tanks, are there boosters where tanks are coaxial, (like a thermos bottle) having a trussed or tridimensional structure between inner and outer tank? ...
10
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1answer
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Numbers for Falcon 9 booster MECO scenarios?

I hoping to look at learn more about Main Engine Cut Off (MECO) for various scenarios. 5 quantities I want are: 1) Booster mass at lift off. 2) Booster mass at MECO 3) Booster velocity at MECO (...
9
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1answer
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Are Falcon Heavy's side boosters aerodynamically detached?

During SpaceX Falcon Heavy test launch live stream, it's been said, just after boosters engines cutoff, the pneumatic separation system on the centre core will unlock the two side boosters and ...
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1answer
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What is used to connect the side boosters to the first stage?

For example, on the Falcon Heavy, the two side cores detached from the first stage but how are they attached and what mechanism is used to detach them?
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Why “strap-on” boosters, and how do other people say it?

This came up for me in the context of translating something into German. Everybody throws around terms like "strap-on boosters", although they aren't actually held on by straps. It's not even meant ...
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1answer
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How much brighter-than-expected could a spent rocket body become?

In a comment below an answer to the question What could have made a satellite appear to move side to side while near the horizon? I've said: Actually a satellite with flat surfaces - especially ...
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1answer
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Are core stages going to start falling unpredictably from orbit somewhat regularly now?

Spaceflight Now's U.S. military tracking unguided re-entry of large Chinese rocket includes the following: In the case of the Long March 5B, the core stage delivered its payload — a prototype ...