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Alexander
Schleicher
Huhrain 1, Postfach 60, 36161 Poppenhausen, Germany
Tel +49 (0)6658 890 Fax +49 (0)6658
8940
US Agent: Eastern Sailplane, P.O. Box 753 Waynesville
OH 45068 Fax 513-897-5909 email murraylx@erinet.com
Schleicher Condor
4
Specifications
-
Span 18.0 m./ 59.2 ft
-
Area 21.2 sq. m. / 230 sq.ft.
-
Aspect ratio 15.2
-
Airfoil Go 532, NACA 0012
-
Empty weight 358 kg. / 789 lb.
-
Payload 202 kg. / 445 lb.
-
Gross weight 560 kg. / 1,234 lb.
-
Wing loading 26.4 kg. / sq. m. / 5.37 lb. / sq. ft.
-
Structure wood/ fabric wings and tail, steel-tube/ fabric fuselage
Performance
-
L/D max. 31 80 kph / 43 kt / 50 mph
-
Min. sink 0.70 m/s / 2.3 fps / 1.36 kt
-
65 kph / 35 kt / 40 mph
Other
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Country of origin Germany
-
Designer Heini Dittmar
-
No. of seats 2
-
No. built 18
-
No. in the U.S. 1
A postwar development of the pre-World War II single-seat Condor seriesm
the two-seat Condor 4 first flew in 1953. It has balanced DFS upper and
lower surface airbrakes for approach control and a skid with jettisonable
dolly for takeoff.
Schleicher Rhohbussard
Specifications
-
Span 14.3 m./ 47.0 ft
-
Area 14.1 sq. m. / 151.8 sq.ft.
-
Aspect ratio 14.5
-
Airfoil Go 535
-
Empty weight 150 kg. / 331 lb.
-
Payload 95 kg. / 209 lb.
-
Gross weight 245 kg. / 540 lb.
-
Wing loading 17.4 kg. / sq. m. / 3.56 lb. / sq. ft.
-
Structure wood
Performance
-
L/D max. 20 67 kph / 36 kt / 42 mph
-
Min. sink 0.75 m/s / 2.46 fps /1.36 kt
-
62 kph / 33 kt / 39 mph
Other
-
Country of origin Germany
-
Designer Hans Jacobs
-
No. of seats 1
-
No. in the U.S. 1
The Rhonbussard, which first flew in 1933, was an intermediate performance
sailplane, coming in performance between the Grunau Baby and the high performance
ships of the time, It lacks any spoilers, airbrakes or flaps for approach
control. It has a skid landing gear, with jettisonable dolly for takeoff.
One feature, which led to some notoriety, was the requirement for the wings
to be joined together at the roots before being presented to the fuselage
for attachment.
Schleicher Ka-1
Specifications
-
Span 10.0 m./ 32.8 ft
-
Area 9.9 sq. m. / 106.6 sq.ft.
-
Aspect ratio 10.1
-
Airfoil Go 549 mod.
-
Empty weight 95 kg. / 209 lb.
-
Payload 100 kg. / 221 lb.
-
Gross weight 195 kg. / 430 lb.
-
Wing loading 19.7 kg. / sq. m. / 4.04 lb. / sq. ft.
-
Structure wood and fabric
Performance
-
L/D max. 18 75 kph / 40 kt / 47 mph
-
Min. sink 0.95 m/s / 3.12 fps / 1.85 kt
-
65 kph / 35 kt / 40 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. in the U.S. 1
The prototype Ka-1, which first flew in 1952, was constructed in Kaiser’s
attic. The model was later produced by Schleicher. The Ka-1 has top surface
spoilers for approach control. No landing wheel is fitted, takeoff normally
being made with the glider sitting on its mainskid.
Schleicher Ka-2 Rhonschwalbe
Specifications – Ka-2 (Ka-2b in parenthesis
-
Span 15.0 m./ 49.2 ft (16.0 m./ 52.5 ft.)
-
Area 16.8 sq. m. / 180.8 sq.ft.
-
(17.5 sq. m./ 188.4 sq. ft.)
-
Aspect ratio 13.4 (14.63)
-
Airfoil Go 533
-
Empty weight 254 kg. / 560 lb. (278 kg./ 613 lb.)
-
Payload 208 kg. / 454 lb. (202 kg./ 445 lb.)
-
Gross weight 460 kg. / 1,014 lb. (480 kg./ 1,058 lb.)
-
Wing loading 27.38 kg. / sq. m. / 5.61 lb. / sq. ft.
-
(27.43 kg./ sq. m./ 5.62 lb./ sq. ft.)
-
Structure wood/ fabric
Performance
-
L/D max. 24 87 kph / 47 kt / 54 mph
-
(27 80 kph/ 43 kt/ 50 mph)
-
Min. sink 0.96 m/s / 3.15 fps / 1.87 kt
-
71 kph / 38 kt / 44 mph
-
(0.80 m/s / 2.62 fps/ 1.55 kt)
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 2
-
No. in the U.S. 1
The Ka-2 was designed as a two-place advanced trainer. The later Ka-2B
had the wingspan inceased to 16 m. Approach control is effected by top
and bottom surface Schempp-Hirth type airbrake. Specifications in parenthesis
are for the Ka-2B. ATC.
Schleicher Ka-3
Specifications
-
Span 10.0 m./ 32.8 ft
-
Area 9.9 sq. m. / 106.6 sq.ft.
-
Aspect ratio 10.1
-
Airfoil Go 549 mod.
-
Empty weight 95 kg. / 210 lb.
-
Payload 100 kg. / 220 lb.
-
Gross weight 195 kg. / 430 lb.
-
Wing loading 19.7 kg. / sq. m. / 4.03 lb. / sq. ft.
-
Structure wood and fabric wing, steel tube and fabric fuselage.
Performance
-
L/D max. 18 75 kph / 40 kt / 47 mph
-
Min. sink 0.95 m/s / 3.12 fps / 1.85 kt
-
65 kph / 35 kt / 40 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. in the U.S. 1
The Ka-3, which first flew in 1956, was a development of the earlier
Ka-1 with a steel fuselage instead of wood. The Ka-3 has top surface spoilers
for approach control and main skid, but no wheel. Schleicher also offered
the Ka-3 in kit form.
Schleicher Ka-4 Rhonlerche
Specifications
-
Span 13.0 m./ 42.6 ft
-
Area 16.35 sq. m. / 176 sq.ft.
-
Aspect ratio 10.3
-
Airfoil Go 553
-
Empty weight 210 kg. / 460 lb.
-
Payload 200 kg. / 440 lb.
-
Gross weight 410 kg. / 900 lb.
-
Wing loading 25.08 kg. / sq. m. / 5.1 lb. / sq. ft.
-
Structure wood/ fabric wings and tail, steel-tube/ fabric fuselage.
Performance
-
L/D max. 19 79 kph / 43 kt / 49 mph
-
Min. sink 1.0 m/s / 3.3fps / 1.96 kt
-
63 kph / 34 kt / 39 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 2
-
No. in the U.S. 2
The Rhonlerche is a small, strut-braced, 2-seat trainer similar to the
Scheibe Specht, which first flew in 1955. It features a steel-tube, fabric-covered
fuselage, a wooden fabric-covered wing with top-surface spoilers, a fixed
wheel and nose skid, and tandem seating. ATC
Schleicher Ka-6CR
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 12.45 sq. m. / 134 sq.ft.
-
Aspect ratio 18.1
-
Airfoil NACA 63-618/63-615
-
Empty weight 190 kg. / 420 lb.
-
Payload 114 kg. / 250 lb.
-
Gross weight 304 kg. / 670 lb.
-
Wing loading 24.41 kg. / sq. m. / 5.0 lb. / sq. ft.
-
Structure all-wood with some fabric cover
Performance
-
L/D max. 31 80 kph / 43 kt / 50 mph
-
Min. sink 0.61 m/s / 2.0 fps / 1.18 kt
-
68 kph / 36 kt / 42 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. built 1,400
-
No. in the U.S. over 50
The series began with the 14 m. Ka 6. This was followed by the Standard
Class (15 m.) Ka-6b, with skid, and Ka6Br with main wheel. The Ka-6B won
the OSTIV prize for the best Standard Class design at the 1958 World Championships
at Leszno, Poland. The –6c version was a –6b with modified wing root. It
has more of the wing covered with plywood and incorporates other minor
improvements, and also comes in skid and wheeled (-6cr) models. All models
have airbrakes for approach control. Some later –6CR models are designated
as Ka-6CRPE’s, the PE standing for pendulum elevators (the all-moving tail
used on the Ka-6E). Heinz Huth of Germany won in the Standard Class at
the 1960 Koln-Butzwelerhof, Germany and 1963 Junin, Argentina World Championships
in Ka-6’s. In 1963 two Ka-6’s were flown 876.0 km./ 544.3 miles by Karl
Betzler and Otto Schauble from Germany to France, setting a world distance
record, and in 1964, Wally Scott of the U.S. flew his Ka-6CR to a world
goal of 837.7 km./ 520.55 miles. ATC
Schleicher Ka-6E
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 12.41 sq. m. / 133.6 sq.ft.
-
Aspect ratio 18.1
-
Airfoil NACA 63-618
-
Empty weight 190 kg. / 420 lb.
-
Payload 110 kg. / 243 lb.
-
Gross weight 300 kg. / 663 lb.
-
Wing loading 24.17 kg. / sq. m. / 4.97 lb. / sq. ft.
-
Structure wood/ fabric
Performance
-
L/D max. 33 80 kph / 43 kt / 50 mph
-
Min. sink 0.62 m/s / 2.03 fps / 1.20 kt
-
69 kph / 37 kt / 43 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. built 600
-
No. in the U.S. 20
The Ka-6E was produced concurrently with the Ka-6CR for three years.
The Ka-6E has, compared to the earlier –6CR, a longer canopy a lower fuselage
(cross section reduced 10%), a modified leading edge prodile and an all-moving
tail. Hans Werner Grosse of Germany, flying a Ka-6E as a guest, was the
highest scoring pilot at the 1965 U.S. Nationals. Wally Scott won the 1967
Barringer Trophy by flying 888 km./ 552 miles in a Ka-6E. One belongs to
the National Soaring Museum. ATC
Schleicher Ka-7
Specifications
-
Span 16.0 m./ 52.5 ft
-
Area 17.56 sq. m. / 189 sq.ft.
-
Aspect ratio 14.6
-
Airfoil Go 533, 16/ 14%
-
Empty weight 280 kg. / 616 lb.
-
Payload 200 kg. / 440 lb.
-
Gross weight 480 kg. / 1,056 lb.
-
Wing loading 27.34 kg. / sq. m. / 5.6 lb. / sq. ft.
-
Structure wood/ fabric wings and tail, steel-tube/ fabric fuselage
Performance
-
L/D max. 26 80 kph / 43 kt / 50 mph
-
Min. sink 0.70 m/s / 2.3 fps / 1.36 kt
-
68 kph / 36 kt / 42 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 2
-
No. built 550
-
No. in the U.S. 15
The Ka-7 is a two-place tandem trainer which has very effective dive
brakes. It onve held the multi-place world record for speed around a 500
km. Triangle at 84 kph/ 45 kt/ 52 mph, set in South Africa in 1964. It
succeeded the earlier Ka-2 model, differing mainly by the introduction
of a steel tube, fabric covered fuselage in place of wood/ fabric. A modified
plan exists to lower the wings to the mid position and fit a one piece
canopy, which makes the modified glider (Ka-7/ 13) look very similar to
its successor, the Schleicher Ka-13. The lowering of the wings greatly
improves the visibility from the rear
Schleicher Ka-8
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 14.21 sq. m. / 153 sq.ft.
-
Aspect ratio 15.9
-
Airfoil Go 533/ 532
-
Empty weight 190 kg. / 418 lb.
-
Payload 120 kg. / 265 lb.
-
Gross weight 310 kg. / 683 lb.
-
Wing loading 21.81 kg. / sq. m. / 4.45 lb. / sq. ft.
-
Structure wood/ fabric wings and tail, steel-tube/ fabric fuselage
Performance
-
L/D max. 27 72 kph / 39 kt / 45 mph
-
Min. sink 0.64 m/s / 2.1 fps / 1.24 kt
-
60 kph / 32 kt / 37 mph
Other
-
Country of origin Germany
-
Designer Rudolph Kaiser
-
No. of seats 1
-
No. built over 1,100
-
No. in the U.S. 24
The Ka-8 was derived from the Ka-6 series as a simple single-place sailplane
with dive brakes using construction techniques similar to the Ka-7, and
simplified for amateur construction from kits. Emphasis was on rugged construction,
good climbing ability in thermals and good handling characteristics. The
orignal Ka-8 had a very small canopy. The Ka-8B, by far the most numerous
variant, has a substantially larger canopy while the Ka-8C features a longer
nose, larger main wheel located ahead to the center of gravity and deletion
of the larger wooden nose skid resulting in a roomier cockpit. Karl Striedeck
of the U.S. made a 767.0 km./ 476.6 miles ridge flight in a Ka-8B to win
the world out and return in 1968. ATC
Schleicher Ka-9
Specifications
-
Span 12.00 m.
-
Area 12.00 sq. m.
-
Aspect ratio 12.00
-
Airfoil Kaiser
-
Empty weight 136 kg.
-
Gross weight 230 kg.
-
Wing loading 19.17 kg. / sq. m.
-
Structure wood
Performance
-
L/D max. 20 70 kph
-
Min. sink 0.80 m/s 67 kph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. built 2
Schleicher Ka-10
Specifications
-
Span 15.00 m.
-
Area 12.53 sq. m.
-
Aspect ratio 17.96
-
Airfoil Wortmann
-
Empty weight 210 kg.
-
Gross weight 320 kg.
-
Wing loading 25.54 kg. / sq. m.
Performance
-
L/D max. 32 84 kph
-
Min. sink 0.70 m/s 71 kph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. built 12
Schleicher ASW-12
Specifications
-
Span 18.3 m./ 60 ft
-
Area 13.00 sq. m. / 140 sq.ft.
-
Aspect ratio 26
-
Airfoil Wortmann FX 62-131K mod.
-
Empty weight 290 kg. / 640 lb.
-
Payload 140 kg. / 308 lb.
-
Gross weight 430 kg. / 948 lb.
-
Wing loading 33.06 kg. / sq. m. / 6.07 lb. / sq. ft.
-
Structure fiberglass-balse sandwich
Performance
-
L/D max. 47 105 kph / 56 kt / 65 mph
-
Min. sink 0.49 m/s / 1.6 fps / 0.95 kt
-
85 kph / 46 kt / 53 mph
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. built 15
-
No. in the U.S. 7
The ASW-12 is the production development of the trend setting Akaflieg
D-36. At one time the ASW-12 held all three world distance records. A fiberglass
design featuring camber-changing flaps, the –12 had no dive brakes; early
examples lacked the later added (and at first non-jettisonable) tail chute
for glidepath control, a feature which tended to make it challenging on
approach and landing. One example belongs to the National Soaring Museum.
ATC.
Schleicher ASK-13
Specifications
-
Span 16.0 m./ 52.5 ft
-
Area 17.50 sq. m. / 188.4 sq.ft.
-
Aspect ratio 14.6
-
Airfoil Go 535/ 549
-
Empty weight 290 kg. / 639 lb.
-
Payload 190 kg. / 418 lb.
-
Gross weight 480 kg. / 1,057 lb.
-
Wing loading 27.43 kg. / sq. m. / 5.6 lb. / sq. ft.
-
Structure fabric covered steel tube fuselage with wood stringers and fiberglass
nose, wood/ fabric wings and tail.
Performance
-
L/D max. 27 90 kph / 49 kt / 56 mph
-
Min. sink 0.81 m/s / 2.65 fps / 1.57 kt
-
72 kph / 39 kt / 45 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 2
-
No. built over 600
-
No. in the U.S. 17
The ASK-13 two-place tandem trainer was a development of the earlier
Ka-7. The performance improvement was marginal, but the mid-wing design
and improved canopy made for much better pilot visibility. The landing
wheel is fixed and sprung with rubber cones, and the ship is fitted with
airbrakes. In later models, a nosewheel was substituted for the skid. After
Schleicher ceased production, the sailplane has been license-built by Jubi
GmbH of Oerlinghausen, Germany. ATC
Schleicher ASK-14
Specifications
-
Span 14.3 m./ 46.9 ft
-
Area 12.68 sq. m. / 136.5 sq.ft.
-
Aspect ratio 16.8
-
Airfoil NACA 63-618/ 615
-
Empty weight 245 kg. / 540 lb.
-
Payload 115 kg. / 254 lb.
-
Gross weight 360 kg. / 794 lb.
-
Wing loading 28.6 kg. / sq. m. / 5.82 lb. / sq. ft.
-
Engine 19 kW/ 26 bhp Hirth F10 K19
-
Structure wood/ fabric
Performance
-
L/D max. 28 81 kph / 44 kt / 51 mph
-
Min. sink 0.75 m/s / 2.46 fps / 1.46 kt
-
72 kph / 39 kt / 45 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 2
-
No. built 66
-
No. in the U.S. 6
The ASK-14, which first flew in 1967, was a low-wing, powered version
of the Ka-6E with a 2-cycle, 2-cylinder Hirth engine driving a featering
Hoffmann propeller. It features a retractable, single-wheel landing gear
and spoilers. ASK-14’s took the second, third and fourth places in the
single-place class of the first international motorglider contest at Burg
Feuerstein in Germany in 1970.
Schleicher ASW-15
Specifications – ASW-15 (ASW-15B in parenthesis)
-
Span 15.0 m./ 49.2 ft
-
Area 10.68 sq. m. / 118.2 sq.ft.
-
Aspect ratio 20.45
-
Airfoil FX 61-163, FX 60-126
-
Empty weight 230 kg. / 507 lb.
-
Payload 178 kg. / 393 lb.
-
Gross weight 408 kg. / 900 lb.
-
(453 kg./ 1,000 lb.)
-
Wing loading 37.11 kg. / sq. m. / 7.61 lb. / sq. ft.
-
(41.26 kg./ sq. m./ 8.46 lb./ sq. ft.)
-
Structure fiberglass-balsa sandwich
Performance
-
L/D max. 38 89 kph / 48 kt / 55 mph
-
Min. sink 0.55 m/s / 1.8 fps / 1.46 kt
-
68 kph / 36 kt / 42 mph
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. built 510
-
No. in the U.S. about 30
The ASW-15, which first flew in 1968, was Schleicher’s first composite
Standard Class design, originally appearing with a fixed wheel and no water
ballast in conformity with the then Standard Class rules. It has an all-moving
horizontal tail and metal airbrakes for glidepath control. With the modification
of the Standard Class rules to allow water ballast and retractable gear,
Schleicher fitted a retracting gear, installed 38 kg./ 83 lb. Tanks in
each wing and strengthened keel, lengtened cockpit, larger rudder and increased
all-up weight. Data in parenthesis in the specifications column pertain
to the B-version. ATC
Schleicher ASW-17
Specifications
-
Span 20.0 m./ 65.6 ft
-
Area 14.86 sq. m. / 160 sq.ft.
-
Aspect ratio 27
-
Airfoil Wortmann FX 62-K-131 (mod.)
-
Empty weight 404 kg. / 890 lb.
-
Payload 166 kg. / 367 lb.
-
Gross weight 570 kg. / 1,257 lb.
-
Wing loading 38.36 kg. / sq. m. / 7.8 lb. / sq. ft.
-
Structure fiberglass-balsa sandwich wing, fiberglass-honeycomb monocoque
fuselage.
Performance
-
L/D max. 48 100 kph / 54 kt / 62 mph
-
Min. sink 0.50 m/s / 1.64 fps / 0.97 kt
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. in the U.S. about 10
The ASW-17 was the second of Gerhard Waibel’s Open Class designs, superseding
the ASW-12. Aluminum double segment airbrakes make for much easier approach
and landing. The four-piece wing, only 4.5 inches deep at the root, has
provision for up to 100 kg./ 220 lb. Of water ballast and a four-setting
flap/ aileron system in which the ailerons droop with the flaps. An ASW-17
flown by Hans Werner Grosse of Germany gained the World record 1,000 km.
Speed triangle at 145.33 kph/ 78.5 kt/ 90 mph and the 1,250 speed triangle
at 133.24 kph/ 71.9 kt/ 82.8 mph in 1980, both in an ASW-17. ATC
Schleicher ASK-18
Specifications
-
Span 16.00 m.
-
Area 12.99 sq. m.
-
Aspect ratio 19.71
-
Airfoil NACA
-
Empty weight 215 kg.
-
Gross weight 335 kg.
-
Wing loading 25.79 kg. / sq. m.
Performance
-
L/D max. 32 75 kph
-
Min. sink 0.62 m/s 70 kph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. built 48
Schleicher ASW-19 (RAF Valiant
T. Mk. 1)
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 10.86 sq. m. / 118 sq.ft.
-
Aspect ratio 20
-
Airfoil Wortmann FX 61-163/ FX 60-126
-
Empty weight 250 kg. / 552 lb.
-
Payload 200 kg. / 442 lb.
-
Gross weight 450 kg. / 994 lb.
-
Wing loading 41.06 kg. / sq. m. / 8.47 lb. / sq. ft.
-
Structure fiberglass
Performance
-
L/D max. 38
-
Min. sink 0.62 m/s / 2.03 fps / 1.20 kt
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. built about 500
-
No. in the U.S. 60
The ASW-19 succeeded the ASW-15 as Schleicher’s Standard Class Sailpane
using a somewhat thinner airfoil than the model it raplaced. The airbrake
operates on the upper wing surface only. Bear Selen of the Netherlands
won the Standard Class at the 1978 World Championships flying an ASW-19.
The Royal Air Force uses 5 ASW-19’s (known as the Valiant T. Mk.1) in its
Air Cadet training program. ATC
Schleicher ASW-20
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 10.49 sq. m. / 113 sq.ft.
-
Aspect ratio 21.4
-
Airfoil Wortmann FX- 63-131-K
-
Empty weight 260 kg. / 573 lb.
-
Payload 265 kg. / 584 lb.
-
Water ballast 160 kg / 352 lb
-
Gross weight 525 kg. / 1,157 lb.
-
Wing loading 50 kg. / sq. m. / 10.25 lb. / sq. ft.
-
Structure fiberglass
Performance
-
L/D max. 43 120 kph / 65 kt / 75 mph
-
Min. sink 0.59 m/s / 1.93 fps / 1.14 kt
-
84 kph / 45 kt / 52mph
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. built almost 1,000
-
No. in the U.S. about 150
The ASW-20 first flew in 1977 and was an instant success, winning numerous
world and national championships. Built for the 15 m. racing class, it
features trailing edge flaps which interconnect with the ailerons and allow
the entire trailing edge to operate as a flap between –9 and +5 degrees.
The flaps also act as ailerons, but deflect only half of the aileron amount.
The fuselage is similar to that of the ASW-19. Schempp-Hirth type airbrakes
are provided on the upper wing surface only and operate in conjunction
with the flaps at approach setting. The –20B model was introduced in 1983
incorporating new aerodynamic developments in the form of pneumatic (‘turbulator’)
jets (about 860) placed in the lower wing surface, drawing impact air from
pitot inlets and exhausting it into the boundary layer to delay underwing
flow separation. The B model has its gross weight increased to 525 kg./
1,157 lb. Other changes include automatic elevator hookup, an instrument
cluster attached to the forward-hinged canopy, and a hydraulic disc brake.
The –20C model has a slightly modified cockpit, an maximum gross weight
of 454 kg./ 1,001 lb and water ballast of 120 kg./ 264 lb. Schleicher also
introduced an ‘L’ variant, with span extended to 16.59 m. by use of detachable
tip extensions, making the ASW-20L, -20BL and 20CL. In these, water ballast
is restricted to 50 kg./ 110 lb. And gross weight is 430 kg./ 948 lb (BL)
and 380 kg. / 837 lb and no ballast (CL). With the extended tips, best
glide ratio goes up to about 46. The ASW-20 was also license built by Centrair
in France in three variants. The ASW-20F and ASW-20FL are the Centrair
equivalents to the 20 B and 20BL model while the 20 FP is an F model with
NASA winglets designed to improve performance in weak conditions. Roy Mcmaster,
Karl Striedeck and John Seymour won jointly, with others, the world triangle
distance record of 1,435 km./ 891.6 miles in 1994 in an ASW-20B. ASW-20’s
won 2nd and 3rd places in the 15 m. class at the
1983 World Championships at Hobbs, NM. Specifications are for the B model.
Schleicher ASK-21 (USAF TG
9; RAF Vanguard T. Mk. 1)
Specifications
-
Span 17.0 m./ 55.77 ft
-
Area 17.95 sq. m. / 193.21 sq.ft.
-
Aspect ratio 16.1
-
Airfoil Wortmann FX-S02-196 ,
-
Empty weight 360 kg. / 794 lb.
-
Payload 240 kg. / 529 lb.
-
Gross weight 600 kg. / 1,323 lb.
-
Wing loading 33.4 kg. / sq. m. / 6.84 lb. / sq. ft.
-
Structure fiberglass and foam wing, fiberglass honeycomb sandwich fuselage
and tail.
Performance
-
L/D max. 35 85 kph / 46 kt / 53 mph
-
Min. sink 0.65 m/s / 2.13 fps / 1.26 kt
-
67 kph / 36 kt / 42 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 2
-
No. in the U.S. 35
Schleicher’s entry to the composite two-seat sailplane market, the ASK-21
first flew in 1979 and is approved for a number of aerobatic maneuvers.
Schempp-Hirth type airbrakes (upper surface only), ailerons and elevators
are operated by pushrods in ball bearing; the rudder is cable-operated.
Wings attach with a tongue-and-fork connection and two pins. The fixed
main wheel is aft of the center of gravity, with a nosewheel; a tailwheel
is available as an option instead of a skid. A flight test evaluation by
Dick Johnson demonstrated a best L/D of 31:1 but this could likely be increased
by installation of wing root and other seals. The United States Air Force
Academy operates 4 ASK-21’s as the TG-9. The Royal Air Force purchased
10 (known as the Vanguard T. Mk. 1) for its Air Cadet training program.
ATC
Schleicher ASW-22
Specifications – ASW-22B (ASW-22BE in parenthesis)
-
Span 25.00 m./ 82.0 ft
-
Area 16.31 sq. m. / 175.6 sq.ft.
-
Aspect ratio 38.3
-
Airfoil DLR-HQ 17
-
Empty weight 450 kg. / 992 lb. (510 kg./ 1,124 lb)
-
Payload 300 kg. / 661 lb.
-
Water ballast 235 kg / 518 lb
-
Gross weight 750 kg. / 1,653 lb.
-
Wing loading 45.98 kg. / sq. m. / 9.42 lb. / sq. ft.
-
Engine (22BE) (36 kW/ 48 bhp Rotax 505A)
-
Structure carbon fiber, glass fiber, Kevlar and resin
Performance
-
L/D max. 60 95 kph / 51 kt / 59 mph
-
(59 110 kph/ 59 kt/ 68 mph)
-
Min. sink 0.41 m/s / 1.35 fps / 0.80 kt
-
80 kph/ 43 kt/ 50 mph
-
(0.44 m/s/ 1.44 fps/ 0.85 kt)
-
85 kph / 46 kt / 53 mph
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. in the U.S. 5
The Open Class successor to the Schleicher ASW-17, the ASW-22 first
flew in 1981 as a 22 m. ship, of which 39 were produced. Span on the ASW-22B
model was increased to 25 m. with a modified inner wing section and flaperons
similar to the ASW-20. It uses Horstmann and Quast airfoil technology with
underwing pitot tubes to collect high-pressure ram air which then ejected
through 860 tiny turbulator holes in the bottom wing skin ahead of the
flap and aileron hinge line to delay separation of laminar flow on the
lower surface and thereby reduce wing drag. Construction of the four-piece
wing is primarily of carbon fiber, while the fuselage and horizontal stabilizer
are combinations of fiberglass and Kevlar with some carbon. Approach control
is achieved using top surface double segment Schempp-Hirth airbrakes and
a tail parachute. The ASW-22 is fitted with a two-wheel retractable udercarriage.
Measured flight testing of the 25 m. model by Dick Johnson demonstrated
a best L/D of 56:1 at 47 kt. An ASW-22 flown by Hans Werner Grosse of Germany
gained the world 750 km speed triangle record in 1985 at 158.41 kph/ 85.53
kt/ 98.43 mph. An ASW-22B won 1st and 2nd places
in the Open Class at the 1987 World Championships at Benalla, Australa,
another came 1st at the 1991 worlds at Uvalde, TX, and at the
1993 Worlds at Borlange Sweden, two came 1st and 2nd.
The ASW-22BE is a self-launching version with a mast mounted engine. Water
ballast is reduced to 120 kg./ 264 lb. Specifications are for the ASW-22B
with the –22BE in parenthesis.
Schleicher ASK-23
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 12.9 sq. m. / 138.8 sq.ft.
-
Aspect ratio 17.4
-
Airfoil Wortmann FX-61-168
-
Empty weight 240 kg. / 529 lb.
-
Payload 120 kg. / 265 lb.
-
Gross weight 360 kg. / 794 lb.
-
Wing loading 27.91 kg. / sq. m. / 5.72 lb. / sq. ft.
-
Structure GFRP/ foam honeycomb
Performance
-
L/D max. 34 90 kph / 49 kt / 56 mph
-
Min. sink 0.66 m/s / 2.17 fps / 1.29 kt
-
74 kph / 40 kt / 46 mph
Other
-
Country of origin Germany
-
Designer Rudolf Kaiser
-
No. of seats 1
-
No. in the U.S. 3
The ASK-23 is a composite structure flapless early solo/ club sailplane
designed as a successor to the Schleicher Ka-8 and ASK-18. It is the single-place
counterpart of the two-place ASK-21 with cockpit layout similar to that
of the latter’s front cockpit. It has a fixed gear and Schempp-Hirth type
airbrakes.
Schleicher ASW-24
Specifications – ASW-24 (ASW-24E in parenthesis)
-
Span 15.0 m./ 49.2 ft
-
Area 10.00 sq. m. / 107.6 sq.ft.
-
Aspect ratio 22.5
-
Airfoil Boermans DU 84-158
-
Empty weight 230 kg. / 507 lb. (275 kg./ 606 lb.)
-
Payload 270 kg. / 595 lb.
-
Water ballast 170 kg / 375 lb
-
Gross weight 500 kg. / 1,102 lb.
-
Wing loading 50.0 kg. / sq. m. / 10.24 lb. / sq. ft.
-
Engine (24E) (19 kW/ 25 bhp Rotax 275)
-
Structure GFRP/ CFRP/ Kevlar
Performance
-
L/D max. 44 105 kph / 57 kt / 65 mph
-
Min. sink 0.58 m/s / 1.90 fps / 1.13 kt
-
70 kph / 38 kt / 44 mph
-
(0.62 m/s / 2.03 fps/ 1.20 kt)
-
(75 kph/ 41 kt / 47 mph)
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. in the U.S. over 40
The ASW-24, which first flew in 1987, is the Standard Class successor
to the Schleicher ASW-19. Approach control is effected by top surface Schempp-Hirth
type airbrakes. Designer Waibel won the 1992 OSTIV Award for significant
contributions to safety for the ASW-24 design. The ASW-24E is the self-launching
version for which specifications ar given in parenthesis. ATC
Schleicher ASH-25
Specifications
-
Span 25.0 m./ 82.0 ft
-
Area 16.31 sq. m. / 175.6 sq.ft.
-
Aspect ratio 38.3
-
Airfoil HQ 17.
-
Empty weight 480 kg. / 1,056 lb.
-
Payload 270 kg. / 597 lb.
-
Water ballast 225 kg / 485 lb
-
Gross weight 750 kg. / 1,653 lb.
-
Wing loading 45.98 kg. / sq. m. / 9.41 lb. / sq. ft.
-
Structure carbon/ aramid fiber reinforced plastic
Performance
-
L/D max. 57 108 kph / 58 kt / 67 mph
-
Min. sink 0.45 m/s / 1.48 fps / 0.88 kt
-
80 kph / 43 kt / 50 mph
Other
-
Country of origin Germany
-
Designer Martin Heide
-
No. of seats 2
-
No. in the U.S. 7
The tandem two-place ASH-25 first flew in 1986 and within a couple of
years had set five world records for speed over a triangular course varying
from 330 km./ 205.1 miles to 1,380 km/ 857.0 miles. Hans Werner Grosse
of Germany has in all set 12 world records flying an ASH-25. It is the
production version of the one-off two-place ASW-22-2 using an adaption
of the fuselage of the Akaflieg Stuttgart FS-31. The sustainer engined
ASH-25E is powered by a retractable 19 kW/ 25 bhp Rotax 275 engine. A flight
test evaluation by Dick Johnson measured a best L/D of 54.3 : 1 without
turbulator tape or special sealing. An ASH-25 flown by G. Herbaud and J-N.
Herbaud of France both won the world multiplace straight distance and goal
distance records of 1,383 km./ 859.3 miles in the same flight in 1992.
Schleicher ASH-26E
Specifications
-
Span 18.0 m./ 59.0 ft
-
Area 11.70 sq. m. / 125.94 sq.ft.
-
Aspect ratio 27.69
-
Airfoil Boermans DU 89-134/14
-
Empty weight 424 kg. / 935 lb.
-
Payload 161 kg. / 354 lb.
-
Gross weight 585 kg. / 1,289 lb.
-
Wing loading 50.0 kg. / sq. m. / 10.24 lb. / sq. ft.
-
Engine 38 kW/ 51 bhp Midwest AE50 AP
-
Structure CFRP/ GFRP
Performance
-
L/D max. 50 96 kph / 52 kt / 60 mph
-
Min. sink 0.52 m/s / 1.70 fps / 1.01 kt
-
89 kph / 48 kt / 55 mph
Other
-
Country of origin Germany
-
Designer Martin Heide
-
No. of seats 1
-
No. in the U.S. 6
Designed as a dedicated 18 m. sailplane rather than an extended-tip
15 m. model, flapped self-launching ASH-26E claims better performance from
being optimized for this span. The Midwest engine installation is distinctive
from most previous mast mounted retractable engines in that the engine
remains in the fuselage when the propeller is raised, permitting reduction
of the sailplane’s noise footprint.
Schleicher ASW-27
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 9.0 sq. m. / 96.88 sq.ft.
-
Aspect ratio 25.0
-
Airfoil Boermans DU 89-134/14
-
Empty weight 225 kg. / 496 lb.
-
Payload 275 kg. / 606 lb.
-
Water ballast 180 kg / 396 lb
-
Gross weight 500 kg. / 1,102 lb.
-
Wing loading 55.55 kg. / sq. m. / 11.37 lb. /sq. ft.
-
Structure CFRP/ aramid
Performance
-
L/D max. 48 100 kph / 54 kt / 63 mph
-
Min. sink 0.52 m/s / 1.70 fps / 1.01 kt
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
-
No. in the U.S. 1
The 15 m. racing class successor to the ASW-20 has been designed to
maximize performance without regard to possible span extension or addition
of an engine. Airbrakes are top surface triple element Schempp-Hirth type
to compensate for the very thin wing section.
Schleicher ASW-28
Specifications
-
Span 15.0 m./ 49.2 ft
-
Area 10.5 sq. m. / 113 sq.ft.
-
Aspect ratio 21.43
-
Airfoil Boermans DU 99-146MOD
-
Empty weight 235 kg. / 510 lb.
-
Gross weight 525 kg. / 1,202 lb.
-
Wing loading 50 kg. / sq. m. / 10.24 lb. /sq. ft.
-
Structure CFRP/ aramid
Performance
-
L/D max. 45
-
Min. sink 0.55 m/s / 1.86 fps / 1.00 kt
Other
-
Country of origin Germany
-
Designer Gerhard Waibel
-
No. of seats 1
Text from: http://www.aerokurier.rotor.com/
New: Schleicher ASW 28
Schleicher in Poppenhausen, Germany, is building a new Standard Class
glider with a modern laminar wing profile for "turbulent" conditions.
The preliminary data for the new Standard Class racer: best glide
number of 45 at 90 km/h with a wing load of 31 kg/m². By using the
most modern materials such as carbonfibre and Aramid along with a new Polyethylene
fibre, joining a high strength with low weight, Schleicher tries to achieve
an empty weight of only 325 kg, possibly even giving a wing loading of
only 30 kg/m². On the other hand, four integrated tanks for a maximum
water ballast of 180 liters is supposed to keep the spectrum at a 50 kg/m²
wing loading open. Gerhard
Waibel emphasizes the aircraft’s passive and active safety features.
The ASW 24 derived fuselage is designed to be fitted with a rescue system,
the ASW 28 being delivered from the beginning with such a system.
The ASW 24 (along with other Standard Class aircraft coming on the
market at that point in time) showed an effect which Gerhard Waibel wanted
to avoid in any case with the succeeding model. The ASW 24 does not "like"
turbulent air conditions. This effect showed up only over time and by comparison
in competitions. The excellent flying characteristics and the very good
performance of the ASW 24 in smooth air suffer when the air becomes turbulent
in a certain way. The ASW 28 is featuring a new profile from Professor
Loek Boermans, selected from 200 other calculated variants, which is supposed
to give the new glider a top performance and excellent handling characteristics.
Source: Aerokurier
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