Hispano HA-1112-M1L Buchon
- Wingspan 992 cm
- Length 913 cm
- Height 260 cm
- Wing area 16 m2, area load 206Kg/m2
- Kerb weight 2,650 kg, maximum weight 3,300 kg
- Rolls-Roye Merlin 500/45 approx. 1,600 hp , 4-blade Rotol Propeller
- MaxSpeed 660km/h
- Peak height approx. 10,000mtr (approx. 33,000 Ft)
- Range approx. 760km
In 1942, a licensing agreement was concluded between Hispano-Aviacion (led by the spanish government at the time) and Messerschmitt for the production of Messerschmitt Bf109 G fighters. The G-2 aircraft was to be delivered to Spain with the appropriate DB605A, VDM propellers, instruments and weapon sets. There, near Sevillia, the machines should be assembled.
Due to the high war burden, however, It was not possible for Messerschmitt and its suppliers to supply Hispano with the promised parts. Thus, only 25 hull legs could be delivered and just a small part of the factory plans. By the way, the hull legs were delivered without tails (side tail, vertical tails).
In order to make the aircraft airworthy at all, the Hispano designers used their own engine, namely the Hispano-Suiza 12Z-89. This 12-cylinder engine produced around 1,300 hp (for comparison, the 605A produced around 170 hp more). The first flight of this aircraft was at the end of 1944 near Barcelona. On March 2, 1945, the first HA-1109-J1L (the exact designation) flew in Seville. This machine was then also equipped with the well-known VDM propeller. The remaining 24 hulls were flown in between 1947 and 1949. Here, however, with an Escher-Wyss propeller. Operationally, however, these 25 aircraft were never used.
The further development was the HA-1109-K1L. The engine, this time a Hispano-Suiza 12Z-17 could be installed even easier (change of the engine suspension), as propeller served a DH Hydromatic with 3 leaves. This version was armed with 12.7mm Breda machine guns, as well as Pilatus-80mm rocket launchers. The first flight took place in May 1951. Of the originally planned 200 units, however, only 65 were built. In 1955, the aircraft were taken out of active service. As a nickname, this machine was given “Tripala”, which means nothing more than “Three Leaf”.
The “main specialty” of the Hispano versus the Messerschmitt are the counter-rotating motors. The Hispano motors rotate clockwise, but the DB605 rotates counterclockwise, i.e. the propeller rotation direction is different (the propeller of the DB605 clockwise, the hispano motor counterclockwise).
In order to compensate for the pop eller torque, the Messerschmitt designers had already developed an asymetric lateral tail in the “F” series. This, asymetrically profiled, lateral tail allows the aircraft to counteract the torque of the DB605. The torque of the 605 at the start “helped” many pilots to break in times of war, the profiled rudder provided some relief here.
The problem is that the Hispano engine rotates clockwise, and for this purpose the original “G” tail is incorrectly profiled. Instead of counteracting the torque of the propeller, the asymetrically profiled tail unit enhances the aircraft’s unpleasant torque response.
The HA-1110-K1L was a two-seat trainer version, but just a one-off. Following the nomenklatura, the last series production was the HA-1112-M1L. This HA-1112-M1L was then nicknamed “Buchon”. Bouchon is a pigeon bird native to seville near the Hispano plant. The first flight took place on 29.03.1954. This series was equipped with a Rolls-Royce Merlin 500-45, the four-blade propeller was manufactured by Rotol. In order to provide the Rolls-Royce with enough cooling air, the front section had to be changed considerably, the typical chin cooler was installed.
The armament consisted of 2 * 20mm-Hispano-Suiza cannons and the Pilatus rocket launchers already used in the predecessor. The “Buchon” remained in operational use until the end of 1965 (!!!). The last resignation took place on 27.12.1965.
Since these aircraft were still actively used so late, it is also thanks that the aircraft also made a cinematic career after the military. The “Bouchons” were in the well-known movies “Air Battle for England”, “Memphis Belle” and just “Tuskegee Airmen”. In part, the “Buchons” were converted into Mustangs or Hawker Hurricanes for the films. A truly long career.