pressurize

Most planes use bleed air from the turbofan to pressurize the cabin.

If you could make a rocket tank out of pure graphene, then why not pressurize it very high?

You have to pressurize a plane, the submarine will pressurize itself.

This leads to some other potential dangers.. not to mention the time to pressurize would be added to the total trip time.

In non-bleedless aircraft, the engine compressors pressurize air to be used in the A/C unit, which then sends all the pressurized air throughout the cabin.

Edit: To clarify, this "auto-pressurized engines" is just another form of pressure fed operation.

Assuming a return pipe to the surface the deeper it is the higher the boiler pressure you can support since you can use the cold water return column to pressurize the feed.

You physically can't over-pressurize a steam pipeline because the once the pressure gets above a certain point, the pump is hardcoded in its local circuit board to stop.

Here at Technion, they're a regular affair for anyone taking courses, and occasionally for grad-students and professors too.>Now, you take young people, pressurize them to excel or it will have lasting effects on their career, and deprive them of sleep.

A controlled hole in the cavity wall could release it properly, but a crack in the side could effectively lead to rupture, couldn't it?Another thing, if the air pressure inside the tunnel is indeed quite high, the train cars would also need to be pressurized.