Junkers Ju 87 parts that were required to take heavy stress were made of steel. The Ju 87 was fitted with detachable hatches and removable coverings to aid and ease maintenance and overhaul. The designers avoided welding parts wherever possible, preferring moulded and cast parts instead. Large airframe segments were interchangeable as a complete unit, which increased speed of repair. The airframe was also subdivided into sections to allow transport by road or rail. The wings were of standard Junkers double-wing construction. This gave the Ju 87 considerable advantage on take-off; even at a shallow angle, large lift forces were created through the
Junkers J.I to the Canada Aviation and Space Museum in 1969. Additionally, one Junkers J.I fuselage exists, at the Museo Storico dell Aeronautica Militare Italiana in Vigna di Valle. This aircraft was previously exhibited at the Leonardo da Vinci Museum at Milano and was restored at the Technical Museum of Berlin between 2005 and 2010. A flyable Junkers J.I replica is under construction in Hungary. Junkers J.I The Junkers J.I (manufacturer's designation J 4) was a German "J-class" armored sesquiplane of World War I, developed for low-level ground attack, observation and Army cooperation. It is especially noteworthy as being the first all-metal