Many small ones have gasoline engines. Most large and military helicopters have jet turbines, connected to a transmission that drives the rotor.
Many aircraft use nitrogen in their tires
1.5 volt AAA
How far can helicopter fly on a one tank of gas
What kind of companies use natural gas in California?
unleaded
The Chinook is a large army cargo helicopter.
The Sikorsky S-76C++ twin turbine helicopter gets about 1.65 mpg at 140 kn and carries 12 for about 19.8 passenger-miles/gal.
Hydrogen Gas.
cheap gas
Premium gas
it can cost up to 160,000,000 depending on the model and the kind of helicopter.
Use premium gas.