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Document No.: G304S/AFM
Date of Issue: 08/14
1-3
1.4 Descriptive data
Glasflügel 304 S is single seat 18m flapped sailplane of 18m
FAI class, constructed from fiber reinforced plastics (FRP), featuring
camber-changing flaps and a T-tail (with fixed horizontal stabilizer
and elevator)
Sailplane description
Fuselage
The fuselage shell is pure CFRP shell construction reinforced with
Carbon Aramid hybrid fabrics in the pilot area, therefore capable of
large energy absorption.
The fuselage tapers behind the wing, the faired-in one piece canopy
is hinged forward. Canopy jettison mechanism incorporates the
Rögger pivot hook.
The pilot is seated in a semi-reclining position. The landing gear is
retractable and damped. A C.G. release is fitted as standard, and an
Aerotow nose release can be fitted on request. Fuselage is equipped
with engine compartment for further propulsion unit installation.
Wing
The four-piece wing is cantilever and double trapezoidal.
Removable wing extensions are optional. It is constructed as a
CFRP-Foam-Sandwich shell with extruded spar caps of parallel
carbon fibers and shear webs of reinforced GFRP-Foam-Sandwich.
Airbrakes are of the Schempp-Hirth type.
Two integral water ballast tanks carry a total of 194 liters.
Horizontal Tail Unit
The horizontal tailplane has a stabilizer and elevators. Trimming is
by means of a spring on the control drive. The stabilizer is of GFRP-
Foam-Sandwich construction.
Fin and Rudder
The fin is similar to the stabilizer of GFRP-Foam-Sandwich Shell
construction. The rudder is of the CFRP construction.