Roller shutter cutter LS6

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Roller shutter cutter LS6
LS6-a
Type: Glider of the FAI 15-m and 18-m class
Design country:

Germany Federal RepublicFederal Republic of Germany BR Germany

Manufacturer:

Roller shutter cutter

First flight:

February 1983

Production time:

1984 to 2003

Number of pieces:

375

The Rolladen Schneider LS6 is a single-seat glider of the FAI 15 m and 18 m class. It was manufactured by the glider manufacturer Rolladen Schneider from 1984 to 2003 . Their gliding index ranges from 111 to 117.

history

In February 1983 the successor to the LS3 flew for the first time. On March 16, 1990, the LS6-c flew for the first time with a wingspan of 17.50 meters, of which 35 were built in the first year.

construction

Technological and aerodynamic findings from the experience with the LS3 and LS4 determined the design of the LS6. The LS6 was a completely new development.

The wing was designed as a double trapezoid with a modified Wortmann profile. This only shows a thickness of 13.2 percent. The LS6 was the first to use carbon fiber straps. Only the wing area remained as with the LS3 at 10.50 m². The fuselage became a bit narrower than the LS4. The hood opens forward together with the instruments. Flutter problems occurred temporarily, which made the use of a damper necessary. Later, the use of carbon fibers in the wing shell and further structural changes made it possible to dispense with the damper (LS6-b). To improve its high-speed flight characteristics, the LS6 is equipped with continuous flaps (flaperons).

Versions

  • LS6 - can be converted to the LS6-a by installing (TM 6005) a fin water tank.
  • LS6-a - revised ballast system with larger water ballast tanks and optional rudder tank, elevator made of aramid- paper sandwich.
  • LS6-b - (1987) lighter and stronger wing shell made of a fiberglass-carbon-fiber-foam sandwich, the original carbon fiber-aramid elevator from the LS6 returned.
  • LS6-c - exchangeable outer wings allow a span of 15 to 17.5 meters, but this made a larger rudder necessary, which lengthened the aircraft by 14 cm, the cockpit was reinforced for increased crash safety and the permissible weight of non-load-bearing parts increased, automatic rudder connections were introduced, control and ballast systems revised and brought up to date.
    • LS6-c18 - winglets for 18 m span, water ballast was limited to 100 liters and the top speed was increased to 280 km / h.
    • LS6-18w - winglets for 18 m span, double water bag system with 140 liter capacity, optional 15 m winglets.

use

The LS6 has achieved very good results at world championships: 1985 1st and 2nd place in Rieti (Italy), 1st–3th place in Benalla (Australia) in 1987, 1st– 4th place in Uvalde (USA) in 1991 and 1st and 2nd place in 1993 Borlange (Sweden).

Technical specifications

Parameter LS6, LS6-a, LS6-b, LS6-c LS6-c LS6-c18, LS6-18w
crew 1
length 6.66 m 6.80 m
span 15.0 m 17.5 m 18.0 m
Wing area 10.5 m² 11.31 m² 11.42 m²
Wing extension 21.43 27.10 29.13
Empty mass 260 kg 275 kg 280 kg
Takeoff mass 525 kg
Glide ratio 44 at 97 km / h 49 at 97 km / h 50 at 97 km / h
Slightest sinking 0.58 m / s at 85 km / h 0.5 m / s at 85 km / h
Top speed 270 km / h 280 km / h

See also

Web links

Commons : LS6  - collection of pictures, videos and audio files

Individual evidence

  1. ↑ Wolf Lemke: Technical Communication TM 6005. (PDF; 140 kB) In: dg-flugzeugbau.de. Rolladen Schneider Flugzeugbau GmbH, April 25, 1986, accessed on January 29, 2018 .
  2. ↑ a b c d Thomas Bergmann: LS6. In: gliding. 2007, accessed January 29, 2018 .
  3. ↑ EASA.A.095 LS Sailplanes Type-Certificate Data Sheet. (PDF; 410 kB) EASA , accessed on January 29, 2018 (English).