control were introduced. Operational history The Vampyr was built specifically to compete in the 1921 Rhön Gliding competition at the Wasserkuppe. Arriving late with only three flying days remaining the Vampyr, given the entry number of 45and flying marking I, flown by Arthur Martens, soon demonstrated superior performance over the competition. Several long glides were carried out, unfortunately some long duration flights, which could have taken the first prize, were shortened due to Martens circling. No soaring was witnessed on competition flights, with the exception of the short tragic flight of Leusch in the Weltensegler. Unfortunately the Vampyr suffered a launch accident on its last launch in the competition, which resulted in other gliders overtaking it on the leader board. Despite the set-back the Vampyr still managed to earn some plaudits: 3rd prize, of 2000 Marks, for lowest mean sinking speed. 2nd prize, of 3,000 Marks, for the longest distance covered. The Kyffhauser-Flugspende, Frankenhausen Wing prize of 1,000 Marks. Highest co-efficient of glide (sic) prize of 15,000 Marks After the competition ended, several gliders stayed behind to hone their skills including the Vampyr, which was swiftly repaired after its launching accident. In early September the Vampyr made a 7.5 kilometre flight but still without soaring. The Vampyr continued flying after the 1921 competition and appeared at the 1922 Rhön competition with redesigned outer wing panels of greater area featuring wing warping instead of ailerons for roll control. At the 1922 competition steadily improving flights resulted in a flight time of 3hrs 10 min was recorded at an altitude of on 19 August 1922, flown by Frederick Hentzen. Refined developments named Strolch and Moritz were developed by Karl Bremer for Arthur Martens and flown in subsequent Rhön Gliding competitions. Today the sole Vampyr resides on display in the Deutsches Museum München –( German Museum, Munich). A replica is also on display at the Deutsches Segelflugmuseum mit Modellflug (German Glider Museum) at the Wasserkuppe. Variants Hannover H1 Vampyr (1921) The initial version of the Vampyr entered in the 1921 gliding competition at the Wasserkuppe. Hannover H1 Vampyr (1922) The Vampyr refined with greater wing area and wing warping in lieu of ailerons. Flown with success at the 1922 Rhön competition. Akaflieg Hannover Strolch Built by Karl Bremer the Strolch was essentially an upgraded Vampyr with greater span /aspect ratio, built for Arthur Martens. Continued the success of the Vampyr at the 1923,