| Type |
Project, passenger plane 1 + 2-3 passengers |
| Engine |
1 Siemens & Halske Sh 12 |
| Dimensions |
Length 7,80 m , height 2,85 m , span upper 10,7 m lower 9,80 m, wing area 28,30 m2 , |
| Weights |
Empty 700 kg, loaded 1090 kg, max. take off weight |
| Performance |
Max.. speed 140 km/h , cruising speed , range 500 km, endurance , service ceiling , climb 91 m/min. |
Although the development of commercial aircraft at Dietrich Flugzeugwerk AG was abandoned early on and German air traffic developed more or less into a monopoly market with the founding of the single airline Luft Hansa in 1926, the design of the Raab-Katzenstein RK 3 Phoenix passenger aircraft was one of the most important models after the development of the Kl.1 sports biplane and the RK2 training aircraft In 1926 to one of the first aircraft designs of the Raab-Katzenstein-Werke. However, the RK3 was a much smaller passenger aircraft than the Dietrich DP. III of Dietrich Flugzeugwerk AG. With 2-3 passenger seats and a range of 500 km, the RaKa RK3 was intended for feeder and business travel missions. The design of the RaKa RK3 was completed by Paul Hall as early as April 1926. The construction of a prototype began in May 1926. At the Kassel Air Show in May 1926, parts of the first passenger aircraft of the Raab-Katzenstein-Werke were to be shown to the public for the first time[1]. The start of series production was announced for 1927. The RaKa RK3 was offered at a unit price of RM 28,000
For smaller feeder companies, the RaKa RK3 proved to be too expensive. There were no interested buyers for the passenger double-decker. The construction of the prototype was cancelled in 1926. Development was canceled in favor of the simpler RaKa RK8 Marabu. Another, later design based on the RaKa RK3 was the RaKa RK10 passenger aircraft.
In addition to the RaKa RK3 ''Phoenix'', there are references to another four-seater passenger aircraft with the designation RaKa ''Adler''. This appears to have been a slightly larger aircraft intended for use on low-passenger branch routes. However, this project seems to have been discarded before the start of the design stage.
The design was as a biplane, which was based on the RaKa RK2 in its basic dimensions, but received a significantly widened and raised fuselage. Two passengers were seated side by side in an enclosed cabin inside the fuselage, while the pilot and a third passenger were seated side by side in the open cockpit under the wing. A 125 hp Siemens & Halske Sh12 engine was planned for propulsion.
