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Glasflugel H.201 Standard Libelle

 

glas201

 

Designed by Wolfgang Hűtter and Eugen Hanle, the Standard Libelle is a version of the Open Class H 301 Libelle with modifications to meet the Standard Class requirements; these consisted of removing the flaps and tail braking parachute, fitting a fixed instead of retractable monowheel and raising the height of the canopy. A new Wortmann wing section is featured and terminal velocity dive brakes are fitted. The canopy has a catch that enables the front to be raised by 25mm in flight to provide a blast of ventilating air if required, instead of the more conventional small sliding panel. The Standard Libelle is of similar glassfibre construction to the H 301 Libelle, and likewise has provision for 110 lb of water ballast in the wing leading edge.
 

 Glas-201-01

 

The H 201 Standard Class version prototype first flew in October 1967. It originally had a fixed landing gear; but with a change in the Standard Class rules, a retractable gear (H 201B) became standard. The B model features larger uppersurface dive brakes, a larger stabilizer for better low-speed handling, PVC foam filler for the wing ( instead of balsa) to increase durabillity and profile accuracy, and (as an option) a water ballast system (50 kg. /100 lb.) with highter gross weight.
 
Glas-H201
Glasflugel H201 Standard Libelle
 
A total of 601 being built.
 
One flown by Per-Axel Persson of Sweden, winner of the 1948 World Championships, came second in the Standard Class at the 1968 World Championships at Leszno in Poland. In 1970 Sue Martin of Australia set a womens world Out & Return record with a flight of 656 km / 407.64.

 

Libelle-201B
Libelle 201B


Standard Libelle H 201
Wing span: 15m / 49.2ft
Wing area: 9.85sq.m / 106sq.ft
Empty Weight: 185kg / 408lb
Payload: 164kg / 362lb
Gross Weight: 349kg / 770lb
Wing Load: 29.44kg/sq.m / 6.07lb/sq.ft
Water Ballast: 50kg / 110lb
Aspect ratio: 23
MinSink: 0.55 m/s / 1.8 fps / 1.07 kt
L/DMax: 38 85 kph / 46 kt / 53 mph
Seats: 1
Airfoil: Wortmann
Structure: fiberglass

 

H 201B
Span: 49 ft 2.5 in / 15.0 m
Length: 20 ft 4 in / 6.2 m
Height: 4 ft 4 in / 1.31 m
Wing area: 105.5 sq ft / 9.8 sq.m
Aspect ratio: 23.0
Wing section: Wortmann FX-66-17A-11-182
Empty weight: 408 lb / 185 kg
Max weight: 772 lb / 350 kg
Water ballast: 110 lb / 50 kg
Max wing loading: 7.31 lb/sq.ft / 35.7 kg/sq.m
Max speed (smooth air): 155 mph / 135 kt / 250 km/h
Max rough air speed: 135 kt / 250 km/h
Stalling speed: 33.5 kt / 62 km/h
Min sinking speed: 1.96 ft/sec / 0.60 m/sec at 46.5 mph / 40 kt / 75 km/h

Best glide ratio: 38:1 at 53 mph / 46 kt / 85 km/h

 

 Glas-201-02

 

 

 

 

 

 

 


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