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Description
Continuing the experimental aircraft from the ultimate X-15, the hypersonic 3,800 mph, X43A burns through the sky with jet fuel, NOT the X15s rocket fuel.
3D-printed catalysts trigger the necessary chemical reactions for highly efficient heat absorption and thereby cool the craft as it goes.
As cold as it is in the high atmosphere, hypersonic aircraft get way too hot to rely upon atmospheric cooling.
Using endothermic fuels, which act as both the propellant and the aircraft's primary coolant. A heat exchanger captures heat from warming parts and transfers it to a cool hydrocarbon fuel. The large molecule fuel warms up and hits a certain temperature, it triggers chemical reactions that break the hydrocarbons apart into simpler units, which can then be used for propulsion. Bingo! Cool hyersonic cruise.

Description
Continuing the experimental aircraft from the ultimate X-15, the hypersonic 3,800 mph, X43A burns through the sky with jet fuel, NOT the X15s rocket fuel.
3D-printed catalysts trigger the necessary chemical reactions for highly efficient heat absorption and thereby cool the craft as it goes.
As cold as it is in the high atmosphere, hypersonic aircraft get way too hot to rely upon atmospheric cooling.
Using endothermic fuels, which act as both the propellant and the aircraft's primary coolant. A heat exchanger captures heat from warming parts and transfers it to a cool hydrocarbon fuel. The large molecule fuel warms up and hits a certain temperature, it triggers chemical reactions that break the hydrocarbons apart into simpler units, which can then be used for propulsion. Bingo! Cool hyersonic cruise.