The Heinkel HD 36 was a trainer developed in Germany in the 1920s at the request of the Swedish Air Force, which was in search of a new trainer aircraft. The newly formed air force had previously evaluated the HD 35, found it to be underpowered, and asked Heinkel to address this problem. Heinkel's response was a development of the HD 35 modified to use the Mercedes D.III engine instead. The HD 36 also dispensed with the third cockpit that had been a feature of the HD 35 and HD 21 before it, but otherwise the design was largely the same. The single example built by Heinkel was tested by the Air Force, and found still not quite satisfactory, was modified by CFM (the Air Force workshops) until the problems had been largely eliminated. Once this had happened, CFM built two batches of 10 aircraft, delivering them in 1928 and 1930 as the Sk 6.
Constant trouble with the engines led to restrictions on longer flights being imposed, and the solution eventually adopted was to replace the engines on all Sk 6s with Armstrong Siddeley Pumas. Aircraft thus modified were redesignated S 6A. Regardless, the type did not remain in service for very long, and all were dismantled after only a few years.
The HeinkelHD36 was a trainer developed in Germany in the 1920s at the request of the Swedish Air Force, which was in search of a new trainer aircraft...
The HeinkelHD 16 was a single-engine biplane torpedo aircraft developed by the German aviation company Ernst Heinkel Flugzeugwerke in the nineteen-twenties...
The HeinkelHD 25 was a two-seat shipboard biplane reconnaissance floatplane developed in Germany during the 1920s for production in Japan. It was intended...
The HeinkelHD 33 was a scout bomber developed by Ernst Heinkel Flugzeugwerke. The HD 33 was a two-seat biplane powered by an Armstrong Siddeley Puma...
The HeinkelHD 19 W (or Svenska Aero J 4) was a biplane seaplane fighter developed by Ernst Heinkel Flugzeugwerke . The HeinkelHD 19 W was the only naval...
The Heinkel He 111 is a German airliner and bomber designed by Siegfried and Walter Günter at Heinkel Flugzeugwerke in 1934. Through development, it was...
The HeinkelHD 23 was a carrier-borne fighter biplane designed in Germany at Heinkel Flugzeugwerke in the 1920s, for export to Japan. Two examples were...
The HeinkelHD 26 was a reconnaissance seaplane developed in Germany during the 1920s for production in Japan. It was intended as a smaller, single-seat...
The Heinkel He 177 Greif (Griffin) was a long-range heavy bomber flown by the Luftwaffe during World War II. The introduction of the He 177 to combat...
The HeinkelHD 14 was a single-engine biplane torpedo aircraft developed by the German aviation company Ernst Heinkel Flugzeugwerke in the 1920s, and...
The Heinkel Doppeldecker 43 was a prototype German fighter aircraft of the 1930s. A single-engined, single-seat biplane, the HD 43 was designed to meet...
The HeinkelHD 35 was a trainer developed in Germany in the 1920s. It was a conventional single-bay biplane with staggered wings of equal span. The design...
The HeinkelHD 21 was a trainer built in Germany during the 1920s. It was a conventional single-bay biplane with staggered wings braced with N-type interplane...
The HeinkelHD 17 was a military reconnaissance aircraft produced in Germany in the late 1920s. The HeinkelHD 17 was a conventional single-bay biplane...
The HeinkelHD 41 was a reconnaissance aircraft developed in Germany in the 1920s. The HD 41a, equipped with a Siemens Jupiter VI of 520 hp (390 kW),...
The Heinkel He 219 Uhu ("Eagle-Owl") is a night fighter that served with the German Luftwaffe in the later stages of World War II. A relatively sophisticated...
The HeinkelHD 37 was a fighter aircraft, designed in Germany in the late 1920s, but produced in the USSR for Soviet Air Force service. It was a compact...
The HeinkelHD 28 was a reconnaissance seaplane developed in Germany in the 1920s for export to Japan. It was a conventional single-bay biplane with equal-span...
The Heinkel He 178 was an experimental aircraft designed and produced by the German aircraft manufacturer Heinkel. It was the world's first aircraft to...
The HeinkelHD 55 was a biplane flying boat produced in Germany in the early 1930s for use as a reconnaissance aircraft aboard Soviet warships. The design...
The Heinkel He 112 is a German fighter aircraft designed by Walter and Siegfried Günter. It was one of four aircraft designed to compete for the 1933...
The Heinkel He 277 was a four-engine, long-range heavy bomber design, originating as a derivative of the He 177, intended for production and use by the...
The Heinkel Lerche (English: Lark) was the name of a set of project studies made by German aircraft designer Heinkel in 1944 and 1945 for a revolutionary...
The HeinkelHD 44 was a special-purpose light transport aircraft developed in Germany in the 1920s. The HeinkelHD 44 was similar in layout to the Heinkel...
The HeinkelHD 15 was a single-engine biplane seaplane, developed by the German aeronautical company Heinkel Flugzeugwerke in the late 1920s and remained...
The HeinkelHD 27 was a mail-carrying transport built in Germany in the 1920s. The HD 27 flew in 1925 and carried mail until 1928, when it was destroyed...
The HeinkelHD 20 was a twin engine, three seat German biplane built in 1926 for civil survey work. The HeinkelHD 20 was one of the early products of...
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