Large scale parafoil apparatus with an energy attenuator for controlling initial deployment
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United States of America Patent
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Apr 24, 2001
Grant Date -
N/A
app pub date -
Jun 8, 1999
filing date -
Jun 8, 1999
priority date (Note) -
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Abstract
A large scale parafoil apparatus which makes use of an energy attenuator positioned between the initially deployed drogue parachute and the parafoil for controlling the initial stages of deployment thereof and significantly reducing rebound to enhance the deployment of the parafoil canopy in an orderly manner with the suspension lines thereof extending from the canopy to the load retained therebelow being maintained under continual tension during canopy deployment for enhancing rapid and full deployment thereof. The energy attenuating device is a ripstitch modulator having preferably multiple ripstitch sections for gradually decreasing the force resistant to separating the drogue from the parafoil and ultimately completely separating to allow full deployment of the parafoil canopy. The parafoil canopy defines a plurality of air cells with one main air cell being deployed in the lateral central location thereof. This main air cell is preferably reinforced with additional structural members and is the preferably the only cell directly attached to the drogue parachute through the energy attenuation device for enhancing deployment of the parafoil canopy. A bridle configuration can be included for maintaining attachment between the drogue and parafoil canopy during initial deployment thereof.
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