LFG V 61
| LFG V 61 | |
|---|---|
 The V 61 weighing in during the technical preparation for the DSW |
|
| Type: | Float - touring plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
1926 |
| Commissioning: |
- |
| Number of pieces: |
1 |
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The LFG V 61 was a floatplane that was developed in the 1920s by the Luftfahrzeug-Gesellschaft in Stralsund and produced as a one-off.
development
The V 61 was developed following an invitation to tender issued by the German Air Sports Association in February 1926 for the German Sea Flight Competition (DSW) planned for July of that year . The comfortable V 59 touring aircraft, which was released in the previous year and was also designed by Theiss, served as the starting model for the model designed by Karl Theiss . The V 61 was down to minor differences with its predecessor identical and differed only by the use of a more powerful Jupiter - radial engine instead of used in the V 59 BMW IV -Reihenmotors. Only one example was built, which received approval D-925 . Originally, the only two V 59s built were intended for the competition, but in their place the LFG now reported to the organizer that the V 61 and the V 60 model developed at the same time were taking part .
The competition took place in Warnemünde and began on July 12, 1926 with the weighing of the planes and some measurement flights. On July 24th, the ten participants who were ready to take off made a cross-country flight to Norderney . The V 61 landed on this stage, beaten off, only more than two hours after the day's winner, an HE 5 . Even on the return flight to Warnemünde the next day, no front seat could be occupied. The total distance covered was 984 km. The following flights were also unsuccessful for the crew of the V 61, consisting of the pilot from Reppert and two other people, on the contrary. On a return flight to Warnemünde on July 28, von Reppert was forced to fly close to the Baltic Sea due to rain showers and poor visibility. At Miedzyzdroje the plane was pushed down by a gust of wind at around 11 a.m. and hit the water. Von Reppert and his fellow travelers were able to be rescued, but the V 61 sank in the Baltic Sea. The V 60 had already been destroyed in a ditch two days earlier , killing the pilot. The poor performance of the two LFG designs subsequently led to a drop in orders, as a result of which the Stralsund shipyard of the aircraft company had to be sold to Rohrbach GmbH in October 1926 .
construction
The V 61 is a semi-cantilever low-wing aircraft in all-metal construction with two floats made of duralumin, which are connected to the hull by fixed struts. I-struts also run from the top of the inner wings to the fuselage. The aircraft has an open cockpit while the passenger cabin behind it is closed. The rudder and horizontal stabilizer are of normal construction, with the horizontal stabilizer being supported on the underside with an I-strut towards the fuselage.
Technical specifications
| Parameter | Data |
|---|---|
| crew | 1 |
| Passengers | 5 |
| span | 18.90 m |
| length | 10.70 m |
| height | 4.15 m |
| Wing area | 48.00 m² |
| Wing extension | 7.44 |
| Wing loading | 47.70 kg / m² |
| Power load | 7.41 kg / kW (5.45 kg / hp) |
| Mass / performance ratio | 6.44 kW / m² (8.75 PS / m²) |
| Preparation mass | 1470 kg |
| payload | 378 kg |
| Payload | 820 kg |
| Takeoff mass | 2290 kg |
| drive | an air-cooled nine-cylinder four-stroke radial engine Bristol Jupiter with 309 kW (420 hp) |
| Fuel volume | 324 kg (450 l) |
| consumption | 72.00 kg / h |
| Top speed | 185 km / h near the ground |
| Cruising speed | 160 km / h close to the ground |
| Landing speed | 84 km / h |
| Rate of climb | 4.20 m / s |
| Service ceiling | 4800 m |
| Range | 720 km |
| Flight time | maximum 4.50 h |
literature
- Wolfgang Wagner: German air traffic - the pioneering years 1919–1925 . In: German aviation . tape 11 . Bernard & Graefe, Koblenz 1987, ISBN 3-7637-5274-9 .
- Hans-Jürgen Becker: Seaplanes - flying boats, amphibians, float planes . In: German aviation . tape 21 . Bernard & Graefe, Bonn 1994, ISBN 3-7637-6106-3 .
Web link
Individual evidence
- ^ Civil Aircraft Register - Germany. Retrieved August 5, 2018 .
- ↑ Volker Koos: Aviation between the Baltic Sea and Breitling . Transpress, Berlin 1990, ISBN 3-344-00480-8 , pp. 67 ff .