Eli5:how does petrol engines differ from diesel engine?if so then what type of engine is used in rockets?
In: Technology
Diesel engines use a ton of compression and then the “glow” plugs cause ignition. Petrol uses less compression from the pistons and doesn’t require much for ignition as the flammability rate for petrol is much higher than diesel.
Rockets these days use a lot of different fuel sources. Cryogenic helium is loaded just before takeoff. I think the rapid phase change for it from liquid to gas is what causes the propulsion.
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