====== Propulsion ======

In the Aerofly FS 2 there are a handful of different engines to propel an aircraft. There are engines that drive [[propeller|propellers]] through a driveshaft and there are jet-engines that directly create a thrust.

===== Propeller Propulsion =====

A [[propeller]] in the Aerofly FS 2 is usually connected to a [[rigidbody]] object. That ''Body'' is then rotated around a [[jointmulti]] by a drive shaft [[jointtorque|torque connection]]. So in short: the engine acts a torque upon the driveshaft which turns the propeller that then creates thrust based on its rotation speed, pitch and [[airfoil]].

In the Aerofly FS 2 there are a couple of engines to choose from:
  * Turboshaft engines made from [[aircraft:tmd:turbo_engines|turbo engine components]]
  * [[engine|Combustion engine]]
  * [[electric_engine|Electric engine]]

See the guide to [[aircraft:tmd:turbo_engines|turbo engine components]] for more detail.
===== Jet-Stream-Engines =====

Jet stream engines compress air, mix it with fuel, burn it in a combustion chamber and accelerate the hot gases through turbine blades. There are numerous ways to create such an engine and each has their own characteristics. In the Aerofly FS 2 the following jet stream engines are implemented:

  * [[aircraft:tmd:turbo_engines|modular turbo engines]] for high by-pass-ratio turbofan engines used for airliners like the A320, B747 and low by-pass-ratio engine for jet trainers like the MB339 alike.
  * [[turbofan]], [[turbojet]] legacy engines with simplified simulation (usage will be faded out over time).
  * [[jet_engine]] afterburning turbojet engine used in fighter jets like the F15E or F18.

See our guide to [[aircraft:tmd:turbo_engines|modular turbo engines]] for more detail.
===== Rocket Engine =====

Rocket Engines are currently only partly implemented. The ''rocketengine'' class is still recognized but currently broken (as of today, 23rd of Jan. 2017). It might be re-added later, please contact us if you need this type of propulsion for your project. Here is a pretty image of a Laval nozzle in the mean time :D
{{ :aircraft:tmd:rocketengine.png?nolink |}}