1922 light aircraft
Inter-Wars
Dietrich / Dietrich-Gobiet
Richard Dietrich first built a monoplane at his Hanuske works in 1912, and learned to fly a year later. In 1922 produced the DP.1, one of the first light aircraft in Germany. About that time the name was changed to Dietrich-Gobiet, of Kassel. In 1924 built a cantilever biplane resembling a Fokker D.VII, as well as other designs, but by 1925 (when company reverted to original name) was in serious financial trouble, becoming bankrupt in 1927.
Cloudcraft Glider Co Dickson Primary
Designed by Roger S. Dickson and like other primary gliders of the 1930s, the Dickson Primary was aerodynamically unambitious, with its emphasis on low cost and simplicity. It was a wooden high wing aircraft, carrying the pilot on an open seat with a largely open, flat truss girder fuselage behind.
The wing had a two-spar fabric covered structure and was completely rectangular in plan. Ailerons occupied approximately ⅓ of the outer trailing edge. The wing was mounted on the horizontal upper beam of the three-bay fuselage Warren girder. The lower beam, angled slightly upwards rearwards, carried the pilot’s seat and controls at its forward end. Pairs of landing wires ran from a longitudinally-orientated inverted V-shaped pylon above the centre of the upper wing to the two spars near the inboard edge of the aileron. Similarly arranged flying wires ran from the same wing points to the keel. Bracing wires from the rear spar, at the same point as the flying wires, were anchored to the lower rear corner of the flat fuselage girder to limit sideways flexing.
The seat and exposed control column were located just ahead of the wing leading edge. A simple skid acted as undercarriage. At the rear, a fabric-covered tailplane, with swept leading edges and carrying rectangular elevators, was mounted on the upper fuselage beam over the whole of the aft fuselage bay. The rearmost vertical member of the girder carried a near-rectangular rudder, which projected above the fuselage led by a slender fin. Lateral stability was enhanced by the fabric covering of the rear bay of the fuselage.
The Dickson Primary flew for the first time in 1930. The designer of this glider has carried out extensive flight trials, and the machine behaved beautifully in every way, proving exceptionally stable. The only slight adjustment made was to fit the wires inside the rudder pedals instead of outside, to slightly reduce the gearing.
Only nine Dickson Primarys have established individual identities. However, a Cloudcraft Glider Co., Southampton, advertisement from July 1931 claimed that there were “over one hundred in use at the present time” in the UK, United States, Australia, New Zealand and South Africa. Some of these may have been built from kits, others from plans published in books and in or by magazines like Flight or bought from Cloudcraft. Certainly one example was built and flying in New Zealand by March 1931. UK gliding clubs (GC) flying Dickson Primarys included the London GC, operating at Dunstable, the Southampton GC and the Stockport GC. The last built their Dickson from plans. Seven years after the first flight, full working drawings were still on offer for 30/- (£1.50) from Flight itself, as they had been in 1931.
Dickson Primary
Wingspan: 34 ft 3 in (10.45 m)
Wing area: 170.0 sq ft (15.79 sq.m)
Airfoil: Clark YH
Aspect ratio: 7.0
Length: 17 ft 4 in (5.28 m)
Empty weight: 180 lb (82 kg)
Crew: 1
DFS Prüfling
The German RRG Prufling of 1926 was a secondary training glider designed for club use. It was to be cheap to build, given the difficult financial situation of many Germans after the First world war, as well as simple enough that skilled non-professional builders and gliding clubs could successfully build them from plans.
The concept took shape shortly at the Martens gliding school at the Wasserkuppe in the rhön-Rossitten-Gesellschaft GBR at the end of 1925. Chief Martens instructor Fritz Stamer and Alexander Opisem were to produce two gliders in a few days; a Zogling and Prufling. Some parts, such as wings, and to a lesser extent, horizontal tails, the two aircraft were similar.
Both were almost rectangular in shape, two-spar wooden structures, with two-piece wings with fabric covering everywhere except the front edges of which were covered with plywood. In Pruflings the tips of the wings were more rounded and his wingspan 500 mm more. The ailerons were simple, though Pruflings were a little longer. Both had triangular tailplanes carrying elevators, which were rectangular pieces cut-out for rudder movement, though the tail Pruflings was more strongly swept and wider in chord.
The main difference between the two was in the fuselage. In the Zogling was very simple to open a longeron of the fuselage, Prufling more regular hexagonal cross section, wood-frame structure, covered with plywood forward from under the wing, and fabric aft. The wing was supported over the fuselage with a pair of parallel lift struts on each side, tying it almost in the middle of the span when the spars to the lower fuselage longerons. The open cockpit was under the wing center section was supported by two pairs of struts to the upper longerons of the fuselage. Front pair located in the front part of the cabin was a single, upright struts and in the back, just back, had a friend with an inverted V-steam. In the center there was a noticeable gap between the wings, connected by short wooden the link of the chord. The horizontal tail was located on the top longerons. with a triangular fin to wear vertically, straight edged balanced rudder, which was at an angle just below the heel and extended down to the keel. In Prufling landed on the rubber suspension below the frame forward the whole ply skin of the fuselage, helped a very small skid.
It first flew in 1926 and was soon in use with the corresponding RRT rhön Rossitten gliding clubs.
The plans were sold and many of them were built inside and outside of Germany. As an example, one was flying from the Lancashire Aero club and the other with the London gliding club in the early 1930s. Despite this success, Prufling was something of a disappointment as an additional training aircraft, for their performance was not much better than a typical primary. Handling also was not good, with lack of stability.
Wingspan: 10.50 m / 34 ft 5 in.
Wing area: 15.24 sq.m / 164.0 sq ft.
Aspect ratio: 7.23
Length: 5.484 m / 18 ft 0 in
Empty weight: 105 kg / 231 lb
Gross weight: 195 kg / 430 lb
Wing loading: 12.8 kg/sq.m / 2.6 lb/sq ft
Seats: One
DFS Olympia Meise / DFS 108 Olympia / Nord 2000 / Elliotts of Newbury / EoN Type 5 / Zlin Z-25 Šohaj / Chilton Olympia
After the Olympic games in Berlin in 1936 introduced gliding as an Olympic sport, plans were made to fly the 1940 Olympic championships with a standard design of sailplane to give each pilot the same chances. The FAI (Federation Aeronautique Internationale) duly announced a design competition for what was to be the Olympic sailplane. This specified a span of 15m (49ft 2.5 in), an empty weight of 160kg (353lb), a payload of 95kg (209lb) and a maximum speed of 200km/hour (124mph); only one material was to be used for construction throughout, air brakes were to be fitted but flaps or a retractable undercarriage were not allowed.
The competition was held at Sezze airfield in Italy between 20–26 February 1939 and was duly won by the Meise which had first flown earlier that year and which, like the other competing aircraft, was evaluated by six well known pilots from several other European countries.
The Meise had been redesigned to fit into the new Olympic class specifications. The new ‘Olympia’ Meise had the prescribed wingspan of 15 m (49 ft 2 in), spoilers, but no flaps, and an undercarriage consisting of a skid and a non-retractable wheel. The pilot sat all-enclosed in an aerodynamically clean fuselage made of laminated wood and topped by an acrylic glass hood. The plane could be launched by winch as well by airplane. Its wood-and-fabric construction made it easy for flying clubs to maintain, to repair and even to build the gliders from kits. Approach control is by top and bottom Surface Schemmpp-Hirth type airbrakes. The original version used a takeoff dolly.
The Meise was in many respects a classic design with excellent flying qualities; its high cantilever wing was of wood and fabric construction and had DFS air brakes, while the fabric-covered wooden fuselage had a landing skid under the forward part, and the pilot sat under a detachable framed cockpit canopy in line with the wing leading edge.
When the Meise first flew it soon aroused interest in many countries in the few months before war broke out, and the German Aero Club supplied design details to a number of prospective customers.
Both the Meise as well as the Olympic class gained immediate enthusiastic support, and the 1940 Olympic gliding championship would probably have ended up as an all-Meise contest — if the Second World War had not intervened and the 1940 Olympics had not been cancelled.
Plans were distributed throughout the world for competing nations to produce their own Olympias.
626 Olympia Meises were built in Germany during the war by Flugzeugbau Ferdinand Schmetz Herzogenrath (601 built) and Flugzeugbau Schleicher (25). Most of the German production were among the 15,000 German gliders destroyed in 1945. 17 were also built at the time in Sweden.
Both the Meise as well as the Olympic class gained immediate enthusiastic support, and the 1940 Olympic gliding championship would probably have ended up as an all-Meise contest — if the Second World War had not intervened and the 1940 Olympics had not been cancelled.
626 Olympia Meises were built in Germany during the war by Flugzeugbau Ferdinand Schmetz Herzogenrath (601 built) and Flugzeugbau Schleicher (25). Most of the German production were among the 15,000 German gliders destroyed in 1945. 17 were also built at the time in Sweden.
The Meise, also sometimes known by the designation 108-70, set a pattern that lasted well into the postwar years, for it was built in France after the war as the Nord 2000. By November 1947, 100 Nord 2000 were ordered into production.
In Britain the design of the Olympia Meise was taken up by Chilton Aircraft Ltd., Elliotts of Newbury produced (as the EoN Type 5) the original skid version, and a modified version (Olypia 2B) with non-retractable main wheel.
The German drawings were not detailed and so entirely new drawings were made. Elliotts had been asked in 1945 by Chilton Aircraft Ltd to make one set of wings for the Chilton Olympia. An entirely new drawings were made by Chilton that merely retained the Meise Olympia’s aerodynamic shape. Otherwise it was a complete re-design and resulted in a stronger and heavier (+30 kg) aircraft.
To maintain employment at their factory, Elliotts refused to sell the wing jigs that they had made for the prototype. After building one prototype, which flew in 1946, the rights and drawings of the Chilton aircraft were taken up by Elliotts of Newbury (EoN) in the UK. Their first EoN Olympia flew in 1947. Later variations were produced by Elliotts into the late 1950s.
Production of the Olympia (originally called Type 5) started in 1946 as a batch of 100, and the first flight was made in January 1947. Elliotts and their design consultants Aviation & Engineering Products Ltd made improvements to the original design before starting production. Marks 1, 2 and 3 were produced, mainly distinguishable by the landing gear. The Mark 1 had only a skid whereas the Olympia 2 had a built-in main wheel. The Eon Olympia 3’s wheel was jettisonable after take off. The first batch of 100 was completed in 1947 but the market could not absorb such a large number, despite the low price of £425. Even by 1953, 40 of the first 100 Olympias were still unsold. Nevertheless, a second batch of 50 was built. Gliders from the second batch were still being offered for sale for £800 as late as 1957 in order to clear the stock, despite being below cost price.
After building three marks of the Olympia, another improved version, called the EoN Olympia 4 was produced in 1954. This is regarded as being sufficiently different from the original as being a new type. This type in turn led to a succession of variants.
The Olympia was also built after the war in Germany, in the Netherlands, in Spain, Switzerland (12), Hungary (35) with a further twenty modified as the Cinke, Australia (3), Austria and in Czechoslovakia as the Zlin Z-25 Šohaj, and Brazil (07).
The Vintage Sailplane Association has plans.
Structure: wood/fabric wings and tail, wood fuselage.
Over 952 were built in total.
Variants:
DFS Olympia Meise
The original design for the 1940 Olympic gliding competition; built in large numbers during and after World War II, in Germany, Sweden, the Netherlands, Switzerland, Hungary, Austria and Brazil.
Chilton Olympia 2
A single prototype built in England, by Chilton Aircraft, in 1946.
Elliotts of Newbury EoN Olympia
Further production in the UK after Elliotts acquired the rights to the design from Chilton.
EoN Type 5 Olympia 1: Improved Olympia-Meise. Landing skid.
EoN Type 5 Olympia 2: Fixed monowheel.
EoN Type 5 Olympia 3: Jestisonable dolly wheels and skid.
EoN Type 5 Olympia 4: New wing section, NACA 643618 at root, NACA 643421 at tip.
Nord 2000
Production in France post-war.
Zlin Z-25 Šohaj
Production in Czechoslovakia post-war.
Cinke
A modified version built in Hungary post-war.
Variations:
Elliots of Newbury (EoN) EoN 10 Olympia
Zlin Z-25 Šohaj
Specifications:
DFS Meise
Wing span: 15.0 m / 49 ft 2.5 in
Length: 7.27 m / 23 ft 10 in
Wing area: 15.0 sq.m / 161.5 sq ft
Wing section: Gottingen 549/676
Aspect ratio: 15.0
Empty weight: 160 kg / 353 lb
Max weight: 255 kg / 562 lb
Water ballast: None
Max wing loading: 17.0 kg/sq.m / 3.48 lb/sq ft
Max speed: 119 kt / 220 km/h
Stalling speed: 29.5 kt / 55 km/h
Min sinking speed: 0.67 m/sec / 2.2 ft/sec at 32 kt / 59 km/h
Best glide ratio: 25.5 at 37 kt / 69 km/h
DFS Olympia Meise
Length: 23.852 ft / 7.27 m
Wingspan: 49.213 ft / 15.0 m
Aspect ratio: 15.00
Airfoil: Go 549, root; 676, tip
Wing area: 161.46 sq.ft / 15.0 sq.m
Max take off weight: 661.5 lb / 300.0 kg
Weight empty: 452.0 lb / 205.0 kg
Max. weight carried: 209.5 lb / 95.0 kg
Max. speed: 108 kts / 200 km/h
Landing speed: 30 kts / 55 km/h
Cruising speed: 35 kts / 65 km/h
Wing loading: 4.1 lb/sq.ft / 20.0 kg/sq.m
MinSink: 0.70 m/s / 2.3 fps / 1.36 kt at 37mph
L/DMax: 25 66 kph/ 36 kt / 41 mph
Glide ratio: 25.5:1 at 42.5mph
Crew: 1
DFS Meise
Wing span: 15.0 m / 49 ft 2.5 in
Length: 7.27 m / 23 ft 10 in
Wing area: 15.0 sq.m / 161.5 sq ft
Wing section: Gottingen 549/676
Aspect ratio: 15.0
Empty weight: 160 kg / 353 lb
Max weight: 255 kg / 562 lb
Water ballast: None
Max wing loading: 17.0 kg/sq.m / 3.48 lb/sq ft
Max speed: 119 kt / 220 km/h
Stalling speed: 29.5 kt / 55 km/h
Min sinking speed: 0.67 m/sec / 2.2 ft/sec at 32 kt / 59 km/h
Best glide ratio: 25.5 at 37 kt / 69 km/h
Olympia Meise 51
Wingspan: 15 m (49 ft 3 in)
Wing area: 15 m2 (160 sq ft)
Aspect ratio: 1.5
Length: 7.3 m (23 ft 11 in)
Width: 0.58 m (1 ft 11 in) maximum fuselage width
Empty weight: 165 kg (364 lb) equipped
Max takeoff weight: 290 kg (639 lb)
Never exceed speed: 220 km/h (137 mph; 119 kn)
Aerotow speed: 100 km/h (62.1 mph; 54.0 kn)
Winch launch speed: 80 km/h (49.7 mph; 43.2 kn)
Maximum glide ratio: 25 at 70 km/h (43.5 mph; 37.8 kn)
Rate of sink: 0.67 m/s (132 ft/min) at 60 km/h (37.3 mph; 32.4 kn)
Wing loading: 17 kg/m2 (3.5 lb/sq ft)
Crew: 1
EoN Olympia 2
Wingspan: 49 ft 3 in (15 m)
Wing area: 160 sq ft (15 sq.m)
Aspect ratio: 15
Airfoil: root:Göttingen 549 (mod.), tip:Göttingen 676
Length: 21 ft 8 in (6.61 m)
Empty weight: 430 lb (195 kg)
Max takeoff weight: 670 lb (304 kg)
Stall speed: 31 mph; 27 kn (50 km/h)
Never exceed speed: 129 mph; 112 kn (208 km/h)
Rough air speed max: 128 km/h (79.5 mph; 69.1 kn)
Aerotow speed: 100 km/h (62.1 mph; 54.0 kn)
Winch launch speed: 100 km/h (62.1 mph; 54.0 kn)
Maximum glide ratio: ~25 at 72.5 km/h (45.0 mph; 39.1 kn)
Rate of sink: 132 ft/min (0.67 m/s) at 63 km/h (39.1 mph; 34.0 kn)
Wing loading: 4.1 lb/sq ft (20 kg/m2)
Crew: 1
DFS 108 Weihe / 108-49 Grunau Baby / 108-14 Schulgleiter (SG) 38 / Schweyer Weihe
The Weihe single-seater high performance competition sailplane was designed for the DPS by Ing Hans Jacobs, who was responsible for so many of the leading prewar German types, such as the Meise, Kranich, Rhonadler and Rhonsperber. The Weihe was developed from an earlier gull wing design known as the Reiher and first flew in 1938, being placed fourth in the Rhon competition of that year.
Produced in large numbers by the Jacobs Schweyer factory and elsewhere in Germany before and during the war, it soon aroused the interest of prospective customers and more than 550 were eventually built in Spain, France, Sweden and Yugoslavia as well as Germany from the original German plans, and including a few built after the war as the Weihe 50 by the Focke-Wulf company when it was reconstituted at Bremen Airport as Focke-Wulf GmbH.
The Weihe remained in the front rank of competition sailplanes for a very long time; it took first place in the 1948 World Gliding Championships flown by Per-Axel Persson of Sweden, and at these championships no less than 13 out of 29 competitors were flying Weihes. The type also took the first two places in the 1950 World Championships and third place in the 1954 World contest, being able to hold its own with the many more advanced postwar designs then in use. Persson, who had won the 1948 World contest, had set a world height record of 26,411 ft in his Weihe the year before, and in 1959 a Weihe set another height record of 31,709ft.
The Schweyer version differed slightly from the D.F.S. model by having a slightly longer nose and larger canopy. Originally produced with D.F.S. airbrakes of limited effectiveness, some late production examples have Schempp-Hirth type airbrakes.
The 18m span wings have a thin Gottingen 549 aerofoil section, and small spoilers are fitted just inboard of the ailerons. For rigging the high cantilever wings are fitted into the fuselage with their tips on the ground, the tips then being raised and the wings locked into position with a bolt. The Weihe is of conventional wooden construction; the fuselage is rather long with a narrow cross section that makes for a somewhat cramped cockpit. The canopy was originally of the multi-framed type with a sliding window, but the later Weihe 50 had a more streamlined one-piece canopy. Take-offs are made on a jettisonable dolly wheel landing gear and there is a landing skid under the forward fuselage.
The Focke-Wulf produced Weihe 50 had a blown canopy, and some of which had a fixed main wheel instead of a jettisonable dolly. Nine Weihe 50s were built postwar by Focke-Wulf GmbH, the prototype of this series first flying on 14 March 1952.
Approximately 400 were built, 270 by Schweyer.
DFS 108 Weihe
Wingspan : 59.055 ft / 18.0 m
Wing Area: 18.39 sq.m /198 sq.ft
Aspect ratio: 17.46
Airfoil: Go 549-M2
Length : 26.247 ft / 8.0 m
Empty Weight: 230 kg / 508 lb
Payload: 105 kg / 230 lb
Gross Weight: 335 kg / 738 lb
Wing Load: 18.22kg/sq.m / 3.7lb/sq.ft
Vne: 83 mph.
Landing speed : 14 kts / 26 km/h
Cruising speed : 38 kts / 70 km/h
L/DMax: 29 76 kph / 41 kt / 47 mph
MinSink: 0.61 m/s / 2.0 fps / 1.18 kt
Glide ratio : 21.2
Crew : 1
DFS108-49 Grunau Baby
Wingspan 13.6 m (45 ft)
Length 5.9 m (20 ft)
Height 1.5 m (4 ft 11 in)
Empty weight 160 kg (353 lb)
Schleicher Weihe 50
Wingspan: 59.055 ft / 18.0 m
Wing area: 197.4 sqft
Aspect ratio: 17.7
Length: 26.706 ft / 8.14 m
Empty weight: 507lb
Max take off weight: 738.7 lb / 335.0 kg
Max. speed: 92 kts / 170 km/h
Min sinking speed: 1.9ft/sec at 37.5mph
Best glide ratio: 29:1 at43.5mph
Crew: 1
DFS Reiher
High performance soaring plane, Germany, 1938
Length : 25.459 ft / 7.76 m
Wingspan : 62.336 ft / 19.0 m
Crew : 1
DFS Habicht
The single seat Habicht was designed by Hans Jacobs
The Habicht E was an aerobatics soaring glider of 1936
Wing span: 13.6m
Wing area: 15.82sq.m
Empty Weight: 190kg
Gross Weight: 280kg
Wing Load: 20kg/sq.m
Aspect ratio: 10.7
Airfoil: Go 420
L/DMax: 21
MinSink: 0.80 m/s
Seats: 1
Habicht E
Length : 21.49 ft / 6.55 m
Wing span : 44.619 ft / 13.6 m
Max take off weight : 639.5 lb / 290.0 kg
Max. speed : 227 kts / 420 kph
Glide ratio : 22.6
Crew : 1
DFS Kranich / Schweyer Kranich / Schleicher Kranich
The DFS Kranich (or Crane), which first flew in the autumn of 1935, was the real forerunner of this new breed of two-seater which could be used for competition flying and long distance soaring as well as dual-control training.
Designed by Ing Hans Jacobs and built by Ing Luck, the Kranich prototype was developed from an earlier Jacobs design, the Rhonsperber high performance single seater. After successful flight trials, the Kranich was put into production by Karl Schweyer A.G. at Mannheim, since the DFS did not manufacture aircraft of its own design except for prototypes, and altogether 400 Kranichs were built in Germany.
The type was also built under licence in Sweden, Poland, Yugoslavia, Czechoslovakia and Spain.
As late as 1952 Kranichs captured the first three places in the two-seater class in the World Gliding Championships held at Madrid and the type had previously set up more world records and many national ones. The two pilots sit in tandem under a long and narrow framed canopy with individual detachable sections, dual control being provided, and an unusual feature is a small transparent panel in each wing root to provide downward visibility for the instructor in the rear seat located behind the wing spar. Construction is of wood and fabric, the fuselage being of plywood. The mid-set gull wings were fitted with spoilers in the initial production version – use of these had been pioneered in the Rhonsperber – but the 1935 strengthened Kranich 2 was fitted with air brakes. Take-offs were made on a double wheel unit that was jettisoned when airborne, and there was a long ash skid under the forward fuselage for landing.
A Kranich 3 was used to flight test a special wing section for the Akaflieg Braunschweig SB-11, this wing section, of 1.5m span and 0.75m chord, being mounted on a steel tube framework on the tip of the nose in front of the cockpit, and having two large endplate surfaces on each side of it.
After the war 40 Kranich 3s were built by Focke-Wulf GmbH, the prototype of this series, registered D-3002, first flying on 28 May 1952. The Kranich 3 was different in several respects from the prewar versions; it had a new wing in the low-mid instead of mid position, with dihedral from the roots and straight taper instead of the gull wing with compound taper of prewar aircraft; aspect ratio was now 15.6 A longer forward fuselage was featured with the canopy top now flush with the fuselage top line; length was now 30ft 6.25in.
In the early 1970s a powered version of this veteran design was produced by Eduard Schappert in Germany, who modified one of the Kranich 3s built postwar by Focke-Wulf GmbH to have a 35hp Fichtel & Sachs SA-2-440 engine mounted on a retractable pylon aft of the rear seat, and driving a two-blade tractor propeller. A fuel tank of glassfibre in the fuselage held 1.87 Imp gallons, and this variant was designated Kranich 3M. It had a maximum speed of 87mph with the engine on, a cruising speed of 62mph, a take-off run of 985ft and a maximum range of 74 miles.
Kranich
Length : 25.262 ft / 7.7 m
Wingspan : 59.055 ft / 18.0 m
Crew : 2
Schweyer Kranich
Wing span: 18.0 m (59 ft 0 in)
Length: 7.7 m (25 ft 3 in)
Wing area: 22.7 sq.m (244.4 sq.ft)
Wing section: Gottingen 535
Aspect ratio: 14.3
Empty weight: 255 kg (562 lb)
Max weight: 435 kg (959 lb)
Water ballast: None
Max wing loading: 19.16 kg/sq.m (3.92 lb/sq ft)
Max speed: 116 kt (215 km/h)
Stalling speed: 37.5 kt (70 km/h)
Min sinking speed: 0.69 m/sec (2.3 ft/sec)
Best glide ratio: 23.6
Kranich II
Length : 25.262 ft / 7.7 m
Wingspan: 59 ft 0.75 in / 18.0 m
Wing area: 244.4 sq ft / 22.7sq.m
Length: 25 ft 3.25 in
Empty Weight: 562 lb / 290kg
Max take off weight: 1025.3 lb / 465.0 kg
Wing Loading: 20.5kg/sq.m
Max. speed : 94 kts / 175 kph
Crew: 2
L/DMax: 23.6
MinSink: 2.3 ft/sec / 0.69 m/s / 65 kph
Aspect ratio: 14.27
Airfoil: Go 535
Kranch III
Wing span: 59.383 ft / 18.1m
Wing area: 21.06sq.m
Length: 29.921 ft / 9.12 m
Empty Weight: 330kg
Max take off weight: 1146.6 lb / 520.0 kg
Wing Load: 26.1kg/sq.m
Max. speed: 100 kts / 185 kph
MinSink: 0.70 m/s / 70 kph
L/DMax: 30 80 kph
Aspect ratio: 15.56
Airfoil: Go 549
Seats: 2
DFS Prasident
High performance soaring plane, Germany, 1935
Length : 21.654 ft / 6.6 m
Height : 6.07 ft / 1.85 m
Wingspan : 52.493 ft / 16.0 m
Crew : 1
All Aero 