Feuerlilie Feuerlilie ( English : fire lily ) was the code name of a German anti - aircraft missile , which was developed in 1940 and was shelved because of problems with the controller and the drive section at the end of January 1945 in favour of other projects . The Feuerlilie was built and tested at Rheinmetall - Borsig in two versions : the F - 25 with a diameter of 25 cm , and the F - 55 55 cm in diameter . The engines were Rheinmetall 109 - 505 / 515 solid rocket s . Feuerlilie F - 25 . In 1940 Hermann Goering ' s Aviation Research organisation ( Deutsche Forschungsanstalt für Luftfahrt - DFL ) began to design a remote - controlled rocket under the code name " Fire Lily " to research the construction of anti - aircraft missiles . The first model , the " Feuerlilie ( 4 . 4 F ) " was a scaled - down version created in the short term to get an impression of the later flight behaviour of the new weapon . The intention of the Air Ministry ( RLM ) was to test 25 " F 25 " s , in cooperation with the Deutsche Forschungsanstalt für Segelflug ( DFS ) and the Reichspost - Forschungsamt ( RPF ) . In practice this took place , but only some time later . The development of the remote control system was at an advanced stage in February 1943 , with research in the wind - tunnel and the construction of a gun rack almost complete . The production of the first F - 25 pre - series included 24 specimens made unexpectedly good progress and by July 1943 it was possible to make further F - 25s ready . The work , however , faltered due to lack of motors . The first F - 25 in the July 1943 was tested in the Leba proving ground on the Baltic Sea . By mid 1944 at least four F - 25s had been fired . However , the test results did not meet expectations and so the development of the F - 25 was still set before end of 1944 . Feuerlilie F - 55 . With the completion of the development of the F - 25 , the main interest in the LFA focused on the F - 55 . This was a remote - controlled 2 - stage supersonic missile ( first stage : solid and level flight : liquid ) . Launching the device was made from an oblique ramp , later also on a modified 88 - mm anti - aircraft gun launch pad . The first production of the F - 55 was completed in April 1942 . On 25 January 1943 a contract was sent to the Ardelt company in Breslau for the construction of five test samples . The construction of the units was completed in February 1943 . On 9 March there was a delay to the delivery of the batch , now 30 units , due to technical problems , including with the controller and the drive section . The first launch of an F - 55A1 was on 12 May 1944 . It flew for 69 seconds and a distance of 7500 m . From 19 October 1944 at Greifswalder Oie three further launches of the F - 55A2 , which demonstrated their unstable flight behaviour . The launch of the improved F - 55A3 was aborted on 21 October 1944 because of technical problems . On 22 November 1944 the Technical Department of the Air Ministry cut the number of F - 55s from 25 to 11 devices . There was a further cut in December 1944 to 20 sample units of the A2 and A3 models . The last documented attempt to fly an F - 55A2 took place on 11 December 1944 at Greifswalder Oie . To accelerate the development and to obtain reliable results , on 14 January 1945 it was decided to use the unmodified drive from the Henschel Hs 293 in the F - 55 A2 and A3 . The F - 55 would have a larger tail for greater flight stability . As the development was discontinued in late January 1945 these changes were scrapped . F - 25 to 1896 mm Technical Data . F - 55 to 4800 mm F - 25 - 250 mm F - 55 - 550 mm F - 25 to 15 , 000 mm F - 55 - 4500 mm F - 25 - 840 km / h F - 55 - 1260 km / h F - 25 - not known F - 55 - 10 , 000 m F - 25 - not known F - 55 - 600 kg with a payload of 100