What is the difference between turboshaft and turbojet?

The primary difference between the turboshaft and the turbojet is that an additional power section, consisting of turbines and an output shaft, has been incorporated into the design. A turboshaft engine is very similar to a turboprop and many engines are available in both variants.

What sort of aircraft might employ a turboshaft engine?

helicopters
Turboshaft engines are primarily used on helicopters.

What is the principle of turboshaft engine?

Turboshafts are an adaptation of gas turbine technology in which the principle output is shaft power from the expansion of hot gas through the turbine, rather than thrust from the exhaust of these gases.

What is the difference between a turbojet and turboprop engine?

Turbojets were the first air breathing gas turbine engine for aircraft, while turboprop is an advanced variant of turbojet, using the gas turbine to drive a propeller to generate thrust. Turbojets show good performance at supersonic speed, while turboprops show good performance at subsonic speeds.

Where are turboshaft engine used?

Turboshaft engines are commonly used in applications that require a sustained high power output, high reliability, small size, and light weight. These include helicopters, auxiliary power units, boats and ships, tanks, hovercraft, and stationary equipment.

Are turbojet engines still used?

Turbojets were used on Concorde and the longer-range versions of the TU-144 which were required to spend a long period travelling supersonically. Turbojets are still common in medium range cruise missiles, due to their high exhaust speed, small frontal area, and relative simplicity.

What are the advantages of a turbojet engine?

It has much higher power to weight ratio than the piston engine. Turbojet engine can operate at very high temperatures. It can produce more thrust than the propeller engine. Mating parts are less so less wear.

What are the advantages of a turbofan engine?

Because the fuel flow rate for the core is changed only a small amount by the addition of the fan, a turbofan generates more thrust for nearly the same amount of fuel used by the core. This means that a turbofan is very fuel efficient. In fact, high bypass ratio turbofans are nearly as fuel efficient as turboprops.

What engines do helicopters use?

The two most common types of engines used in helicopters are the reciprocating engine and the turbine engine. Reciprocating engines, also called piston engines, are generally used in smaller helicopters. Most training helicopters use reciprocating engines because they are relatively simple and inexpensive to operate.