i can"t do this

@Kerbango Dont think I'd ever be able to do that haha

@franticmatty

@stormysarge Since 2 days ago.

@LockHeadMartinAerospace when is this open for entries?

@EternalDarkness The SR-71 has ramjets, but can take off on it's own, because it uses a turboramjet. Similarly, the SR-72 will utilize a turboscramjet.

@LockheedMartinAerospace @Viperfox Scramjet is a version of Ramjet capable of sustaining a supersonic airflow. Ramjet uses the speed of the vehicle it's mounted on to ram the air into the combustion chamber, instead of turbine compressors (that's why it's a ramjet). It cannot function at low speed, and at supersonic speeds it uses a cone to reduce the speed of the airflow through it (similar to the nose of MiG21). That is effective up to a certain speed. Scramjet, on the other hand, can work above that speed limit, and is thus used mainly as a propellent for long-range hypersonic missiles. Vehicles equipped with ramjet or scramjet as a main form of propulsion require assisted takeoff (RATO, JATO, or solid rocket booster as a first stage of a cruise missile).

@BogdanX Just like all engines (except rockets and ion engines)