Jet engines are faster than propellers as jet engines can push the air faster than propeller engines.
Both jet engines and propellers take air and push it back quickly, although jet engines take a smaller amount of air and accelerate that small amount of air really fast.
And propellers take a much larger amount of air but don't accelerate the air as fast as jet engines do.
Jet engines and propeller engines are also optimized for different speeds.
Jet engines allow for an aircraft to achieve higher speeds than propeller engines and jet engines also produce thrust by accelerating the air through a nozzle, which creates a high speed exhaust stream which pushes the aircraft forward.
Propeller engines, rely on the rotation of the blades to move the air and create thrust.
Most production business jets also called private jets, also use two or 2 jet engines instead of one.
And while 2 jet engines are common in private jets, some private jets also have 3 jet engines also known as trijets for safety, performance and operational flexibility.
Having at least 2 jet engines allows for the balance between operational efficiency and an ability to continue to fly safely if one of the jet engines happens to fail.
And turbofan engines are a popular choice for private jets as a result of their efficiency and thrust capabilities.
And private jets often have their jet engines mounted on the rear fuselage, closer to the tail, unlike the commercial airliners that often have the jet engines or engines under their wings.
The design can improve the aircraft efficiency and stability.
Jet engines can run on various different combustible fuels other than jet fuel.
Even military turbine jet engines are made to operate on a range of different fuels, including AvGas and even heating oil.
Although the military turbine jet engines are optimized for running on and burning JP4 and JP5 fuels.
And some light aircraft jet engines can run on MoGas or even Jet A1 which can also operate on diesel fuel.
Turbine jet engines, including the ones used in jet aircraft are made to burn fuel and expand the resulting hot gases, which create thrust.
Kerosene based fuels like JP4 and JP5 are preferred in military jet engines for their energy efficiency and energy density although they are designed to handle a range of fuels.
And although not ideal, some jet engines can also run on other fuels like AvGas or diesel fuel, especially in certain light aircraft or military applications.
However using of fuels in jet engines other than the optimized fuels can require more extensive maintenance for the engine to ensure the engine is functioning properly and ensure longevity of the engine.
Kerosene based jet fuel is recommended for use in most jet engines as it offers a higher energy density when compared to gasoline and contributes to better performance and range for jet aircraft.