Aeronautics and astronautics – Aircraft structure – Airship skin construction
Patent
1987-03-12
1988-06-14
Barefoot, Galen
Aeronautics and astronautics
Aircraft structure
Airship skin construction
244 31, 2441293, B64B 158
Patent
active
047506903
ABSTRACT:
A hot air balloon envelope (11) of the type having a downwardly-directed bottom opening (12) and characterized by being formed of a multiplicity of elongate gores (26) joined along adjacent sides, each of the gores being formed of a multiplicity of joined-together individual fabric panels (30). The improvement comprises at least one observation window (40) positioned in the upper hemisphere of the envelope in substitution for an envelope panel and having a size and transparency sufficient to permit an occupant of a balloon carriage (20) suspended from the envelope to look upwardly through the bottom opening and the observation window to view large objects, such as other balloons in the vicinity above the balloon envelope and not otherwise visible from the balloon carriage.
REFERENCES:
patent: 3337162 (1967-08-01), Bauserman
patent: 4174082 (1979-11-01), Eshoo
patent: 4390149 (1983-06-01), Barnes et al.
Adams, III W. Thad
Barefoot Galen
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