Jet engines are not calibrated as such but get routine maintainance depending on the flying hours of the engine.
They also undergo major overhaul and preformance runs during their life. But i think calibrate is the wrong term.
jet engine
Frank Whittle was the invetor of the jet engine.
You can but a mini jet engine on ebay.
Jet engines can vary in speed depending on the type and size of the engine. Commercial jet engines typically operate at speeds between 9,000 and 25,000 rpm (revolutions per minute). Military jet engines can reach even higher speeds, often exceeding 30,000 rpm.
The Germans invented the first operational jet engine during WW2.
33BPH means 33 Brake Horse Power, which is an engine's horsepower measured by a calibrated load placed on the engine. It is often given with an engine speed where the peak power was achieved, denoted as RPM (33 BHP @ 2500 RPM).
jet metel
The combustion of the jet fuel in the engine of a jet aircraft propells the craft forward when it exits the nozzles of the jet engine(s) at high speed.
It depends on the engine. The weight of the jet engine varies from 542lbs to 13842lbs.
Gloucester is where the first jet engine was developed .
Frank Whittle invented and built the first Jet Engine.
If you're referring to the power of the engine, it is not in hertz. The power of of a jet engine is measured in pounds.