- Glasflügel H-301
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The Glasflügel H-301 Libelle is an early
composite 15-metre Class single-seatsailplane produced byGlasflügel from 1964 to 1969.Development
In 1964 the H-301 Libelle ("Dragonfly") received the first German and first U.S. Type Certificate issued to an all-fiberglass aircraft. It had flaps, waterballast and retractable landing gear.
There are two canopy variants: the normal canopy and a sleeker, lower-profiled 'racing' canopy with no side vent. The canopy is unusual in having 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 used for this purpose.
The American Will Schuemann pioneered several performance-enhancing modifications to the type. Exemplars incorporating these changes are informally known as 'Schümanised' Libelles.
The H-201 Standard Libelle was developed in 1967 as a Standard Class variant.
The Libelle was a very popular and influential design. Its very light wings and extremely easy rigging set a new benchmark. Handling is generally easy except that it is quite sensitive to sideslipping and has relatively ineffective airbrakes that make short landings tricky for inexperienced pilots.
The Standard Libelle was superseded by the Hornet.
The Libelle was superseded by the Mosquito.
Design
* Wings: spar and shell of balsa or foam / reinforced plastic sandwich
* Ailerons: balsa or synthetic foam / reinforced plastic sandwich.
* Horizontal stabilizer: reinforced plastic
* Elevator: reinforced plastic
* Automatic connections for airbrakes, flaps and elevator. Ailerons are connected by a "pip" pinpecifications
aerospecs
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met or eng?= metcrew=One pilot
capacity=50 kg (110 lb) water ballast
length m=6.19
length ft=20
length in=4
span m=15.00
span ft=49
span in=3
swept m=
swept ft=
swept in=
rot number=
rot dia m=
rot dia ft=
rot dia in=
dia m=
dia ft=
dia in=
width m=
width ft=
width in=
height m=1.25
height ft=4
height in=1
wing area sqm=9.5
wing area sqft=102
swept area sqm=
swept area sqft=
rot area sqm=
rot area sqft=
volume m3=
volume ft3=
aspect ratio= 23.6
empty weight kg=ca. 180
empty weight lb=400
gross weight kg=300
gross weight lb=660
lift kg=
lift lb=eng1 number=
eng1 type=
eng1 kw=
eng1 hp=
eng1 kn=
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eng2 number=
eng2 type=
eng2 kw=
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eng2 lbf-ab=max speed kmh=200
max speed mph=125
max speed mach=
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range km=
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endurance h=
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ceiling m=
ceiling ft=
glide ratio= ca. 39
climb rate ms=
climb rate ftmin=
sink rate ms= 0.55
sink rate ftmin= 108armament1=
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armament6= aircontent
see also=
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lists=References
*Thomas F, Fundamentals of Sailplane Design, College Park Press, 1999
*Simons M, Segelflugzeuge 1965-2000, Eqip, 2004
* [http://www.sailplanedirectory.com/ Sailplane Directory]
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