Quote (card_sultan @ Jul 15 2019 11:32pm)
Sorry, the smithsonian museum propaganda site for children is not an acceptable source.
Do you have an actual scientific citation that claims a jet engine can't gets its Oxygen from a frozen tank?
because Wikipedia says this about -297F degree oxygen:
Liquid oxygen has an expansion ratio of 1:861 under 1 standard atmosphere (100 kPa) and 20 °C (68 °F),[3][4] and because of this, it is used in some commercial and military aircraft as a transportable source of breathing oxygen.
which means it can just be warmed up and made into standard air, to be used by humans - and Jet Engines.
Wow, what's it like to keep realizing your whole world view is warped by controlled propaganda and the real info is freely available to you but your to lazy to actually look it up.
This is real embarrassing stuff. Such a slaughter. Tricked by a fancy word/10
Sweet, you're gonna go full slinky on us here. This is gonna be great!
https://history.nasa.gov/conghand/propulsn.htm NASA source on rocket engines.
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D. LIQUID BIPROPELLANT CHEMICAL ROCKETS
The common liquid rocket is bipropellant; it uses two separate propellants, a liquid fuel and liquid oxidizer. These are contained in separate tanks and are mixed only upon injection into the combustion chamber. They may be fed to the combustion chamber by pumps or by pressure in the tanks (fig 2).
https://history.nasa.gov/conghand/fig5d2.gif
Propellant flow rates must be extremely large for high-thrust engines, often hundreds of gallons per second. Pump-fed systems may require engines delivering several thousand horsepower to drive the pumps.4 This power is usually developed by a hot gas turbine, supplied from a gas generator which is actually a small combustion chamber. The main rocket propellants can be used for the gas generator, although, as in the case of the V-2 and the Redstone, a special fuel like hydrogen peroxide can be used for this purpose.5
The pressure-feed system eliminates the need for pumps and turbines; however the high pressure, perhaps 500 pounds per square inch, required in the tanks leads to the necessity for heavier structures, thus adding dead weight to the vehicle that may more than offset the weight saved by removing the pumping system.6 On the other hand, removal of pumping equipment may raise overall reliability,
The walls of the combustion chamber and nozzle must be protected from the extremely high gas temperature. The method most commonly used is to provide passage in the nozzle wall through which one of the propellants can be circulated. In this way the walls are cooled by the propellant, which is later burned. This technique is referred to as regenerative cooling.7
Thrust termination is easily accomplished with the liquid rocket by simply shutting the propellant valves; however, this operation must be precisely timed and controlled. The amount of thrust delivered can be controlled by controlling the rate of propellant flow.
https://www.grc.nasa.gov/www/k-12/UEET/StudentSite/engines.html NASA source on jet engines. Notice how this site is set up to help grade school kids learn things. This is THE INDOCTRINATION!!!
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Jet engines move the airplane forward with a great force that is produced by a tremendous thrust and causes the plane to fly very fast.
All jet engines, which are also called gas turbines, work on the same principle. The engine sucks air in at the front with a fan. A compressor raises the pressure of the air. The compressor is made with many blades attached to a shaft. The blades spin at high speed and compress or squeeze the air. The compressed air is then sprayed with fuel and an electric spark lights the mixture. The burning gases expand and blast out through the nozzle, at the back of the engine. As the jets of gas shoot backward, the engine and the aircraft are thrust forward. As the hot air is going to the nozzle, it passes through another group of blades called the turbine. The turbine is attached to the same shaft as the compressor. Spinning the turbine causes the compressor to spin.