Timeline for How do rocket engines work in EMPTY space? [duplicate]
Current License: CC BY-SA 4.0
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| Mar 1, 2019 at 14:43 | comment | added | Solomon Slow | ...Except, it's not always oxygen as such. Rockets depend on powerful, exothermic chemical reactions, and one of the fuel components often will be pure oxygen or an oxygen bearing substance (e.g., perchlorate); but some fuel systems use no oxygen at all: Hydrazine is used as fuel for maneuvering thrusters. It contains no oxygen atoms at all, but it exothermicly decomposes when it meets a catalyst in the rocket nozzle. You can instantly turn a hydrazine-fueled thruster on or off just by opening or closing a valve. | |
| Mar 1, 2019 at 14:32 | comment | added | Solomon Slow | Re, "engines require oxygen to burn." They carry it with them. cdn.britannica.com/s:500x350/94/95394-004-8CA5FFE8.jpg | |
| Mar 1, 2019 at 14:28 | comment | added | Jim | In space, we bring oxygen with us for burning. Also, there are rocket engine designs that don't require oxygen. As for how it works, ever sat in an office chair with a fire extinguisher and propelled yourself around the room? It's like that. Conservation of momentum says if I start out not moving and then shoot a lot of matter (like air or exhaust) out in one direction, I have to move in the other direction to make the total momentum add to zero still. It's why guns have recoil, fire hoses are unsafe, and rockets fly through space | |
| Mar 1, 2019 at 11:41 | history | closed |
John Rennie DK2AX Kyle Kanos Qmechanic♦ |
Duplicate of What is a rocket engine thrusting against in space? | |
| Mar 1, 2019 at 11:40 | history | edited | Qmechanic♦ | CC BY-SA 4.0 |
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| Mar 1, 2019 at 11:34 | answer | added | TechDroid | timeline score: 0 | |
| Mar 1, 2019 at 10:35 | review | Close votes | |||
| Mar 1, 2019 at 11:45 | |||||
| Mar 1, 2019 at 10:16 | comment | added | John Rennie | Possible duplicate of What is a rocket engine thrusting against in space? | |
| Mar 1, 2019 at 10:02 | answer | added | DK2AX | timeline score: 1 | |
| Mar 1, 2019 at 9:47 | answer | added | DakkVader | timeline score: 0 | |
| Mar 1, 2019 at 9:40 | review | First posts | |||
| Mar 1, 2019 at 11:38 | |||||
| Mar 1, 2019 at 9:35 | history | asked | user740521 | CC BY-SA 4.0 |
