f17582d2_engine___Free_net_encyclopedia__Type
[Description] Strictly not a jet at all- a gas turbine engine is used as powerplant to drive (propeller) shaft [Advantages] High efficiency at lower subsonic airspeeds(300 knots plus), high shaft power to weight [Disadvantages] Limited top speed (aeroplanes), somewhat noisy, complexity of propeller drive [Type] 
Turboprop (Turboshaft similar)
Jet engine - Free net encyclopedia
Type