Weiss WM-21 Sólyom
The Weiss WM-21 Sólyom (English: Falcon) was a 1930s Hungarian light bomber and reconnaissance biplane developed by the Manfred Weiss company from the earlier WM-16 which was based on the Fokker C.V.
A single-engine biplane of mixed construction with fixed landing gear, the WM-21 was designed to replace the WM-16, which was considered unsuitable for operational service. The WM-21's structure was strengthened, and the aircraft received a new, more efficient wing set. A tailskid was fitted to allow for shorter landing runs on grass airfields. The Sólyom was powered by a 870 hp (649 kW) Weiss WM-K-14A radial engine.
A total of 128 aircraft were built by three different factories, Manfred Weiss built 25, 43 by MAVAG in Budapest, and 60 by MWG, State Railcar ("Giora vagongiar") in Gyor.
The first aircraft entered service in 1939 with short-range reconnaissance units, although active during the 1940 dispute with Romania their first active operational use was during the Axis invasion of Yugoslavia in August 1941. From June 1941 they were used to support Hungarian Army units in Ukraine and then against Soviet partisans. Around 80 aircraft were also transferred to duties as trainers, as they were removed from operational use, until 1945.
WM-21 Scouts participated in the conflict with Romania in August 1940, they even bombed one of the Romanian airfields. Since the beginning of 1941 WM-21 is gradually transferred to the "second line", but they are still quite a lot left in the combat units. In April - May 1941, several squadrons of the aircraft involved in the invasion of Yugoslavia. After the outbreak of war with the Soviet Union on the German side they used the Hungarian army in the Ukraine, the Don, Stalingrad in 1941-43. The last case of their appearance on the eastern front was recorded in March 1943, near Kharkov. Later they served as training and used against guerrillas in the occupied areas of the USSR. WM-21B stopped producing in early 1942.
Engine: 1 × Weiss WM-K-14A, 650 kW (870 hp)
Upper wingspan: 12.90 m (42 ft 4 in)
Lower wingspan: 9.40 m (30 ft 10 in)
Length: 9.64 m (31 ft 8 in)
Height: 3.5 m (11 ft 6 in)
Empty weight: 2,300 kg (5,071 lb)
Gross weight: 3,400 kg (7,496 lb)
Maximum speed: 320 km/h (199 mph; 173 kn)
Range: 750 km (466 mi; 405 nmi)
Guns: 3 x 7.9mm (0.31in) Gebauer machine-guns
Bombs: 12 x 10kg (22lb) Anti-personnel bombs or 60 x 1kg (2.2 lb) incendiary bombs
Engine: WM 14KB
Engine: WM 14KB, 1030 hp
Wingspan: 12.90 m
Wing area: 30.40 sq.m
Length: 9.64 m
Height: 3.58 m
Empty weight: 2300 kg
Maximum take-off weight: 3500 kg
Maximum speed: 380 km / h
Cruising speed: 336 km / h
Range: 700 km
Service ceiling: 8500 m
Armament: three 7.9-mm Gebauer 34 M machine guns
Bombload: 300 kg