Questions tagged [solid-fuel]

Questions about solid fuels. The rockets that use them, the fuels that are burned, and the vendors that make them.

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5
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0answers
182 views

How does solid propellant mean bulk temperature influence solid rocket thrust and specific impulse?

The relationship is not intuitively clear to me, would like an answer with references and/or graphs. The question arose while reading about Space Shuttle's SRBs.
6
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1answer
694 views

What was the first large rocket to use APCP solid fuel?

I'm surprised wikipedia doesn't have a history section for its APCP article. If I'm not mistaken, early solid rockets used something other than APCP, and really really early solid rockets used black ...
17
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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, ...
5
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6answers
804 views

Can solid rockets be used for flexible burn time by jettisoning them?

Solid rockets have some advantages such as high thrust (good for using the Oberth effect), storability and reliability. The main problem is that they fire all their fuel once in one set way. But ...
2
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1answer
189 views

Could the solid boosters of SLS be paired together to a rescue launcher?

The solid boosters of Shuttle/SLS fly in pairs. Could a pair of them fly without SLS, carrying a smaller second stage and payload to orbit? What capacity would it have? A rescue launcher needs to ...
8
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3answers
1k views

Are ICBMs and orbital launchers similar enough to be co-developed today?

Russia has two types of hypergolic liquid fuel ICBMs deployed, UR-100N and R-36M2 Vojewoda and they are working on the big Sarmat. There's in this category also the Chinese DF-A5. (A list of ICBMs ...
10
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2answers
454 views

Can a crew access room (white room) be contaminated by rocket propellant residues during launch?

Observing a Space Shuttle launch, I noticed that the crew access gantry and its white room are too close to the SRB's flames during launch; the launch umbilical tower and its crew access device on ...
20
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1answer
2k views

Why were Delta II SRBs asymmetrically mounted?

This diagram of the Delta II 74xx-series shows 4 booster rockets mounted rather asymmetrically. All other things being equal, it looks like the net thrust of the set would push the rocket off-axis. ...
7
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1answer
281 views

Does the Oberth effect motivate complementing ion electric propulsion with chemical rocketry?

The solar electric ion propulsion engine of the Dawn spacecraft to Vesta and Ceres used Mars for gravity assist. Would it be gainful to complement an ion engine with a high thrust (solid) chemical ...
13
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3answers
3k views

Why weren't SRBs used in the design of the Saturn V?

Were solids considered for the Saturn V? If so, why was the idea discarded? I would guess this is due to a number of reasons: Inability to throttle Technology readiness in the era Launch escape
16
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5answers
3k views

Can a solid first stage compete with a liquid fueled first stage?

The thing about solids is that they can have awe inspiring amounts of thrust compared to liquid engines, as you can see in this collection of boosters and thrust levels: Shuttle SRB - 2.8 Mlbs Ariane ...
21
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3answers
6k views

Could 3D printing be used to achieve perfect grain geometry of solid and hybrid rocket motors?

Solid cores, either for solid-fueled of hybrid rocket motors, use various propellant grain geometries to achieve thrust curve needed. For example, some of these could look like:    &...
6
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1answer
706 views

How will the SRBs used by the SLS differ from those used by the Shuttle?

The Space Launch System, which recently secured funding from Congress, uses many features that were developed from the Shuttle program, including the first-stage engines and boosters, and it's overall ...
8
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1answer
543 views

How do you handle variations in launches with a solid second stage?

Watching the Antares launch for Orb-1 mission of Cygnus, I was thinking about the booster. First stage is built in Ukraine by the company that makes the Zenit. They use the NK-33 engine, (Called an ...

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