For a long time, the Swedish Air Force was armed with aircraft of the German company Albatros, the main model of which was B.IIa. One of these planes landed in Sweden in 1914, but was destroyed when landing. Nevertheless, it was liked by the Swedes and it was license built unti 1926 as the Sk 1 until 1926 ). To replace it in August 1925, a new training aircraft was purchased - Heinkel HD.35 . The Heinkel HD 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 was based on that of the HD 21, and like that aircraft, it had three open cockpits in tandem, although the most forward of these was usually faired over when not in use.
Without waiting for the HD.35 to undergo a full cycle of tests for the suitability of being a training aircraft, the Swedish Air Force hastened to adopt it into service renaming it Sk.5 . As it turned out a little later HD.35 did not meet the requirements presented to it and the decision on further purchase did not follow.
| Type |
2-seat trainer |
| Engine |
1 Mercedes D.II |
| Dimensions |
Length 7,40 m, height 3,10 m, span 10,97 m, wing area 32,5 m2 |
| Weights |
Empty 760 kg, loaded 1060 kg |
| Performance |
Max. speed 138 km/h, range 250 km, service ceiling 3300 m, climb 1,8 m/sec. |
| Type |
Werk.Nr |
Registration |
History |
|
235 |
66, 020, SE-SAM |
Made in 1925, The aircraft was delivered in August 1925. to the Swedish Air Force.( 66 later 020, designation Sk 5) It was transferred in 1926 to the F5 military flying school in Ljungbyhed where it became a personal airplane used by the pilot Arvid Flory. In the summer of 1929, it was written off and handed over to private hands. With the new registration code SE-SAM. new owner 1931-05-05 C Sparre, Ljungbyhed 1933-12 to G Söderbaum, Djursholm/Äppelviken. Later,
1938-02-27 to P Gustafssson, Ljungby. Registration cancelled 1940-10-15. It is now preserved at the Swedish Air Force Museum |
|
236 |
D-1319 |
In December 1928 registered to T.H. Hannover |
The HD 35 is a single-stem, braced biplane in timber construction.
Fuselage: The fuselage consists of four longitudinal spars covered with plywood, which form a square cross-section with a bulge on the top and end in a vertical tail cutting edge. The aircraft is equipped with a total of three cabins, but the forward crew compartment located behind the fire bulkhead can be covered and used as a luggage compartment, as is the case with the specimen exhibited in the Swedish Air Force Museum (see photo in the info box).
Supporting structure: The wings consist of a wooden frame with two box spars and internal bracing. They form a slight V-position, which is 2° for the upper wing and 3° for the lower wing. The underside is planked with plywood between the individual spars, the remaining part has a fabric covering. The wing nose is also made of plywood. The wings are connected to each other with N-stems and braced, with the upper wing strongly staggered forward. The canopy is formed by two inverted V-struts. Both wings are equipped with ailerons connected by I-rods.
Tail unit: The tail unit is designed in a standard design, with the side fin being made of a wooden frame and the elevator fin of a tubular steel frame. Both are covered with fabric. The elevator is balanced and adjustable during flight.
Chassis: The HD 35 has a rigid main landing gear with a continuous axle and rubber rope suspension. There is a grinding spur at the rear.
