Heinkel HD 23 was a type of plane that was held on the craft that were first developed when?
Heinkel HD 23 The Heinkel HD 23 was a carrier-borne fighter biplane designed in Germany at Heinkel Flugzeugwerke in the 1920s, for export to Japan. Two examples were delivered to Aichi as pattern aircraft in 1927. Aichi added rudimentary flotation capability and built two further examples as the Type H Carrier Fighter, but full-scale production was not started.
Hangar A hangar is a closed building structure to hold aircraft, spacecraft or tanks in protective storage. Most hangars are built of metal, but other materials such as wood and concrete are also used. The word "hangar" comes from Middle French "hanghart" ("enclosure near a house"), of Germanic origin, from Frankish *"haimgard" ("home-enclosure", "fence around a group of houses"), from *"haim" ("home, village, hamlet") and "gard" ("yard").