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Questions tagged [raptor]

Questions about an engine SpaceX has proposed using Methane/LOX as fuel, which has a 600,000 lb thrust range.

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1answer
181 views

For the Starhopper testing, how will SpaceX hold down the vehicle?

SpaceX is testing the Raptor engine on the Starhopper they built in Boca Chica. For static fires of a Falcon 9/Heavy they use the pad itself, the holddowns to the pad, to keep it from taking off. ...
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1answer
111 views

What is a raptor engine manifold and what's happening in these tweeted pics?

When I think of the words "engine manifold" I think of these. I saw this tweet by Elon Musk which shows the image below, and then there is a reply image with a checkerboard pattern behind part of the ...
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3answers
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New BFR Engine arrangement

Watching the announcement at Space X I was confused about the new engine arrangement. All the nozzles look the same size. Is there still a mixture of vacuum engines and sea level engines? Or did they ...
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2answers
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Benefit of Raptor Engines

I know that the Raptor engines are significantly different from the Merlin 1-D's since they use liquid methane and are cryogenic. However, what exactly enables the Raptor engines to produce a lot more ...
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2answers
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SpaceX Raptor engined first stage landing

Reusability is a key strategy for SpaceX to lower the cost of orbital and interplanetary launches. With the Falcon 9 they are using the powered landing approach to recover the first stage for reuse. ...
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0answers
526 views

Progress of the raptor engine

I have seen that Space X has tested a scaled down version of the raptor, but that was about a year ago. Does anyone know the current progress? Do they have a full scale model? Have they hot fired a ...
4
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1answer
212 views

Don't Preburner exhaust fumes disturb the combustion in a Full-flow Staged Engine?

Since Full-Flow Staged Engine uses preburned fuel/OX-rich gases in combustion chamber, don't those exhaust fumes produced by the preburner somehow unbalance or 'pollute' the pure combustion of fuel ...
9
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1answer
535 views

How does turbine power output of a full-flow staged combustion engine compare to Oxygen-rich staged combustion?

One of the benefits of the SpaceX Raptor full-flow staged combustion engine is the extra power generated by having all of the fuel and all of the oxidizer flow through the turbines to produce power to ...
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2answers
247 views

How much methane to push Titan into Saturn?

How much methane would have to be expended (think Raptor engine) to propel Titan into Saturn? It's clearly a humongous amount.
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3answers
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What's so special about SpaceX's Raptor rocket engine with 300 Bar chamber pressure?

What allows the Raptor engine to have a high chamber pressure of 300 Bar? Compared to other rocket engines which have been or that are now operational, it has the highest chamber pressure. What does ...
9
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1answer
5k views

Rocket Engine Plumbing: Still don't understand the Full Flow Staged Combustion Cycle

I just found this incredible video KSP Doesn't Teach: Rocket Engine Plumbing and ran through it a few times. It's very helpful in the way it outlines the various issues first, and then designs the ...
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6answers
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Why did it take so long for methane to be used as a rocket propellant?

SpaceX have put methane on the map as a rocket fuel, but they weren't the first to consider its use. The first experiments in building a rocket engine that uses methane date back to 2007. Now methane ...
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0answers
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What will the SpaceX BFR booster look like? [closed]

SpaceX's next big booster is notionally known as BFR - Big F-ing Rocket [or Big Falcon Rocket]. (Like the B-52 is the BUFF - Big Ugly Fat F-er, it is a term of enderarment). We know that it will use ...
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10answers
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Why is SpaceX considering Methane as fuel for their next engine, the Raptor?

Currently, SpaceX has developed the Merlin 1 family (1B (Falcon 1), 1C (Falcon 9 v1.0), 1D (Falcon 9 v1.1/F9-R/Falcon Heavy), vacuum versions and sealevel versions) which are LOX/RP1 based. (75-...