The airship produced by Cameron Balloon, Int. The design of this airship
is very complex problem, since it is necessary to ensure simultaneously
large volume to provide sufficient lifting force, minimal mass of construction
and propulsion system, streamlined shape of envelope for maximum flight
velocity, stability in flow, etc.
Streamlined body shape chosen after aerodynamic analysis and water-tunnel
The best shape can be chosen as a result of aerodynamic analysis and testing
in wind- and water-tunnel. But the envelope made of sealed textile is very
flexible and the problem is: how to maintain this good shape under the
action of aerostatic and aerodynamic load?
For this purpose the structure can be reinforced with ribbon carcass. The
program MONSTR-2.2 enables to add ribbons to
structure and predict the shape of envelope under aerostatic and aerodynamic
load. This procedure is very fast. In example presented above (dirigible
volume ~3000m3 , hot air temperature 100C, small excessive pressure 10N/m2)
the proper carcass for the dirigible body was selected after third iteration.
It took only 3 hours including preprocessing, computing and analysis of
results. The final shape after aerostatic loading is close to desirable
Finite-element system and ribbon carcass
Predicted resulting shape under aerostatic load
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