TECH Boeing just patented a jet engine powered by lasers and nuclear explosions

Housecarl

On TB every waking moment
Hummm......

For links see article source.....
Posted for fair use.....
http://www.businessinsider.com/boei...wered-by-lasers-and-nuclear-explosions-2015-7

Boeing just patented a jet engine powered by lasers and nuclear explosions

Benjamin Zhang
Jul. 7, 2015, 5:27 PM
Comments 6

Last week, the US Patent and Trademark Office approved an application from Boeing's Robert Budica, James Herzberg, and Frank Chandler for a laser- and nuclear-driven airplane engine.

With airplane makers constantly on the lookout for new and more efficient ways to power their products, this laser engine is the latest idea cooked up by the engineers at Boeing.

Modern airliners such as the Boeing Dreamliner are powered by multiple turbofan engines. These engines deploy a series of fans and turbines to compress air and ignite fuel to produce thrust.

Boeing's newly patented engine provides thrust in a very different and rather novel manner. According to the patent filing, the laser engine may also be used to power rockets, missiles, and even spacecraft.

As of now, the engine lives only in patent documents. The technology is so out-there that it is unclear whether anyone will ever build it.

Here's how Boeing's new patented engine works.


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Boeing's new jet engine works by firing high-power lasers at radioactive material, such as deuterium and tritium.

Boeing's new jet engine works by firing high-power lasers at radioactive material, such as deuterium and tritium.
YouTube/PatentYogi

The lasers vaporize the radioactive material and cause a fusion reaction — in effect a small thermonuclear explosion.

The lasers vaporize the radioactive material and cause a fusion reaction — in effect a small thermonuclear explosion.
YouTube/PatentYogi

Hydrogen or helium are the exhaust byproducts, which exit the back of the engine under high pressure. Thrust is produced.

Hydrogen or helium are the exhaust byproducts, which exit the back of the engine under high pressure. Thrust is produced.
YouTube/PatentYogi

At the same time, the inside wall of the engine's thruster chamber — coated in uranium 238 — reacts with the high-energy neutrons produced by the nuclear reaction and generates immense heat.

At the same time, the inside wall of the engine's thruster chamber — coated in uranium 238 — reacts with the high-energy neutrons produced by the nuclear reaction and generates immense heat.
YouTube/PatentYogi

The engine harnesses the heat by running coolant along the other side of the the uranium-coated combustion chamber.

The engine harnesses the heat by running coolant along the other side of the the uranium-coated combustion chamber.
YouTube/PatentYogi

This heat-energized coolant is sent through a turbine and generator that produces electricity to power the engine's lasers. Yes, lasers!

This heat-energized coolant is sent through a turbine and generator that produces electricity to power the engine's lasers. Yes, lasers!
YouTube/PatentYogi

Other than the radioactive material, the engine requires very little in terms of external energy.
 

Housecarl

On TB every waking moment
I'm not sure they used lasers back then, did they?

https://en.wikipedia.org/wiki/Nuclear-powered_aircraft

No they were looking at using a full up reactor back then. This set up is lighter but they're still using U-238 interacting with neutrons created by the fusion of the deuterium and tritium. So in the end you've still got a "hot" power unit.

ETA: They first in 1953 got a microwave based system, called a maser, to work. The light based laser didn't come out until 1960.
 
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