||The Reference on Airships
The Gesellschaft zur Entwicklung und Förderung Aerostatischer
Flugsysteme GmbH (Company for the Development and Promotion of
Aerostatic Aerial Systems) was founded
in 1975 by Karl-Ludwig "Mucky" Busemeyer to promote aerostatic systems
in Aachen, Germany. Early developments were remotely controlled
airships and hot air balloons
used for aerial photogrammetry of archeological sites.
GEFA-FLUG was one of the pioneers in the field of remotely controlled
After constructing a remotely operated thermal airship with
a hybrid combustion/electric propulsion system the company started
designing, building and
operating manned hot air balloons and airships.
GEFA-FLUG cooperated with
Thunder & Colt
and developed the AS 80 GD and
AS 105 GD thermal airships with a grant from the German government.
The GD-series airships have a higher fineness ratio than
the standard T&C models and thinner fins for better speed performance.
The GD hot airships offer an advanced catenary load curtain
system as well as a partial vertical partition of the envelope that allows
to heat the front and bow of the ships independently for pitch
control. As of September 1997, six GD-series hot airships had been built
and serial numbers 7 and 8 were under construction.
AS 80 GD thermal airship at the
1996 Worlds in Italy
Today, GEFA-FLUG has 20 employees and is a certified repair
Thunder & Colt,
hot air balloons and airships.
Its fleet includes half a dozen commercial hot air balloons and
four hot air airships, among them two AS 80 GD used for advertisement
and environemental research.
For more information, please visit the
GEFA-FLUG web site
contact GEFA-FLUG directly.
|Technical Data for GEFA-FLUG Airships
||36.0 m (118 ft 1.25 in)
||41.0 m (134 ft 6 in)
||12.4 m (40 ft 8.25 in)
||12.5 m (41 ft)
||2,250.0 m3 (79,458 cu ft)
||2,973.3 m3 (105,000 cu ft)
||46 km/h (29 mph)