fs 24 phoenix
| fs 24 (T) phoenix | |
|---|---|
.JPG)
|
|
| Type: | Glider |
| Design country: | |
| Manufacturer: |
Akaflieg Stuttgart , Bölkow |
| First flight: |
November 27, 1957 |
| Number of pieces: |
1 + 7 |
The fs 24 Phönix is the first glider to be built from fiberglass-reinforced plastic . He has a pioneering role in the development, construction and manufacture of all modern gliders. In contrast to today's fiber composite gliders, which are almost exclusively made with a matrix made of epoxy resin , the Phoenix is made of polyester resin .
history
Hermann Nägele and Richard Eppler have been designing a performance glider with a low wing loading since 1951 . The wing shells were built from balsa wood with a paper-glue layer. After the termination of this project and the burning of the remains, the design of the Phoenix was created "from its ashes" based on new findings in the shell construction and aerodynamics . From 1956, the state of Baden-Württemberg supported strength tests at Bölkow-Developments KG and the construction of the prototype, which took place in cooperation with Akaflieg Stuttgart .
On November 27, 1957, Nägele carried out the maiden flight with a winch launch at the Schwaighofen airfield near Ulm . Performance measurements of the aircraft named fs 24 took place in early 1959 at Mississippi State University . At the German Gliding Championships in Karlsruhe-Forchheim in 1959 , the Phoenix flew with Rudolf Lindner for the first time in a competition. Lindner reached the 5th place; came third after Ernst-Günther Haase in 1961 and won the German Gliding Championship in Freiburg in 1962 .
construction
In the case of the wing, three webs take on the task of the conventional spar . The outside of the wing shell is made of fiberglass-reinforced polyester resin . To increase lift during take-off, thermal flight and landing, there are expansion flaps on the underside . The fuselage shell made of fiber-reinforced plastic, without ribs or ribs, was built around a wooden core, was divided horizontally and glued after the controls were installed.
The fs-24 Phönix T version, built in series by the Bölkow subsidiary Apparatebau Nabern GmbH , received a T-tail instead of the cross tail and a spring-loaded, retractable main wheel instead of the skid. A total of seven copies of the Phönix T were made there by 1961 .
Technical specifications
| Parameter | Prototype D-8258 | Phoenix-T |
|---|---|---|
| crew | 1 | |
| length | 6.84 m | 6.90 m |
| span | 16 m | |
| Wingspan of horizontal stabilizer | 3.20 m | 3.36 m |
| Tail height | 0.95 m | 1 m |
| Wing area | 14.36 m² | |
| Wing extension | 17.8 | |
| Wing profile | EC 86 (-3) -914 (= Eppler 91) | |
| Wing loading | 18.5 kg / m² | |
| Glide ratio | 40 at 78 km / h (37 at 80 km / h) | |
| Slightest sinking | 0.51 m / s at 69 km / h (0.49 m / s at 68 km / h) | |
| Empty mass | 164 kg | |
| Max. Takeoff mass | 265 kg | |
| Top speed | 180 km / h | |
| Minimum speed | 58 km / h | |
Received aircraft
The prototype of the fs 24 Phönix is in the Deutsches Museum in Munich.
The prototype of the production version Phönix T0 with the serial no. 2 (counting started with the prototype with cross tail) and the registration number D-8353 is exhibited in the German Glider Museum on the Wasserkuppe. This aircraft was flown by Ernst Günter Haase at the 1960 World Gliding Championships in Cologne.
A small-series aircraft has been in the depot of the German Museum of Technology in Berlin since the end of 2014 and will find a place in the aviation exhibition after restoration. The machine tracked down at Stroud in Great Britain was registered as D-9138 from 1961, later in Switzerland and most recently as D-0844 in the German aviation role.
Some Phoenix T are still flying today . This includes the last model built with the serial number. 8, which is currently flown with the registration number PH-999 by its owner Hans Disma in the Netherlands and at international classic car shows. Until it was sold to Australia in 2008, it also owned and flew the work no. 3 with the registration number PH-949, the oldest series glider in GRP construction approved for traffic.
Web links
- Kyrill von Gersdorf: The first plastic glider fs 24 Phönix. (PDF; 146 kB) Andreas Tietze, accessed on August 28, 2019 .
- Michael Schulte: fs 24 Phoenix. The world's first plastic glider. Retrieved on November 15, 2016 : "fs 24 Phönix T, D-9217, serial number 406, year of construction 1961"
- Kathleen Wagner: fs 24 Phoenix. Fiber reinforced plastics. Academic Fliegergruppe Stuttgart , April 29, 2014, accessed on November 15, 2016 .
Individual evidence
- ↑ a b c d Dietmar Geistmann: The development of plastic gliders . 1st edition. Motorbuch Verlag, Stuttgart 1976, ISBN 3-87943-483-2 , p. 38-42 .
- ↑ a b c Georg Brütting: The most famous gliders . 1st edition. Motorbuch Verlag, Stuttgart 1970, p. 93-96 .
- ↑ a b c Akaflieg Stuttgart fs-24 Phönix, 1957. In: Collections. Deutsches Museum , accessed on November 15, 2016 : "With the fs-24" Phönix "began a new era in glider construction."
- ↑ Bölkow fs-24 "Phoenix T0". (No longer available online.) German Glider Museum , archived from the original on March 5, 2016 ; accessed on March 9, 2017 : “EG. Haase flew it at the Gliding World Championships in Cologne. "
- ↑ HM: FS 24 Phoenix for the DTMB. In: Aviation Classics. Motor Presse Stuttgart GmbH & Co. KG, November 7, 2014, accessed on November 15, 2016 : "DTMB employees recently picked up the FS 24 Phönix T at a small airfield near the British town of Stroud."