LeO C-301 Improved C-30s with uprated Messier oleo-pneumatic shock absorbers, flotation devices to facilitate ditching at sea and tripod main rotor support. Six aircraft were delivered to the French Navy by early June 1940. Lioré et Olivier LeO C-302Early autogyros suffered from relatively long take-off runs. To reduce the take-off length two C-301 aircraft were fitted with the equivalent of Cierva's "Jump" head allowing the aircraft to leap vertically after only a very short run. The C-302s were used extensively for testing rotor and undercarriage components but development was eventually abandoned in 1949/1950. Focke-Wulf C 30 Heuschrecke (Heuschrecke (Grasshopper)): 40 aircraft built, each with a Siemens Sh 14A 7-cylinder radial engine. Aircraft on display Argentina Cierva C.30A LV-FBL is on display at the Museo Nacional de Aeronáutica de Argentina. Australia Cierva C.30A VH-USR is on display at the Powerhouse Museum, Sydney. France Leo C-302 F-BDAD is on display at the Musée de l'Air et de l'Espace, Paris. Italy Cierva C.30 I-CIER is on display at the Museo della Scienza e della Tecnologia "Leonardo da Vinci", Milan. Netherlands Cierva C.30A SE-AFI is on display at the Aviodrome. Spain Cierva C.30A XVU.1-1 flyable reproduction with a Siemens engine is on display at Museo del Aire, Madrid. United Kingdom Avro Rota I K4232 on display at the Royal Air Force Museum, London, England. Cierva C.30A AP506 (smashed wreck) on display at the Helicopter Museum, Weston-super-Mare, England. Cierva C.30A AP507 on display at the Science Museum in London, England. Avro Rota I HM580 the former G-ACUU is on display at the Imperial War Museum Duxford, England. United States Cierva C.30A K4235 on display at Fantasy of Flight, Polk City, Florida. Military operators Royal Danish Air Force French Air Force French Naval Aviation Royal Air Force No. 80 Squadron RAF No. 529 Squadron RAF Specifications (C.30A) References Notes Bibliography Barratt, M. "Talkback". Air Enthusiast No. 107, September/October 2003. p. 75. External links Spanish reproduction maiden flight IPMS Stockholm pages for the Cierva C.30 including detail photographs C30 Single-engined tractor autogyros 1930s British military utility aircraft 1930s British civil utility aircraft Aircraft first flown in 1933