the rope in decreases the landing distance, since it prevents the rope from being caught in obstacles near the end of the runway on a low final. This feature minimizes the turn-around-time for the Polyt V, so the sailplanes can all be towed to the starting position in a shorter amount of time during a competition. The engine installation is unusual in having a 16 blade adjustable intake cooling fan in the cowling immediately behind the propeller, for low speed high power flight. This additional cooling is automatically blanked off during a dive. The main wheels are mounted on a 3 m diameter semi-circular glass fibre arc attached to the fuselage underside; the nose wheel unit is largely that of a Piper Colt. The springiness and large dampening factor in the main undercarriage makes the Polyt V tolerant of imprecise flaring and the uneven ground surfaces typically found when towing a plane home from an outlanding on a field. Operational history The Polyteknisk Flyvegruppe have used the sole Polyt V to launch their various gliders from 1970 until 2020. OY-DHP is no longer in service, but is on display at the Danish Aircraft Museum, Stauning from summer 2021. Some modifications have been made: the original Polyteknisk designed propeller, optimised for low speed flight has been replaced by a quieter Hoffmann one and the rudder trim tab has been extended to half rudder height. Furthermore the engine cowling has been reshaped and the livery changed from bright orange to a less aggressive white look with orange wingtips, rudder and engine cowling for visibility. Specifications See also References External links Polyteknisk Flyvegruppe homepage An image of the Polyt Five 1970s Danish civil aircraft Glider tugs Low-wing aircraft Single-engined tractor aircraft