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Para-CommanderThe Para-Commander (PC) was a modification to an ascending parachute design by the Frenchman Pierre M. Lemoigne. In 1961, Pioneer and Parachutes Incorporated (PI) developed the Para-Sail.
Planview of Para-Commander
The first public demonstration of the PC was at the Orange Sport Parachute Center in Massachusetts 1962. (PI owned this DZ.) By the 1966 US National Parachuting championships, all competitors were using the 'hot high performance PC'!
Compared to the more common flat circular, with or without modifications, the PC had a 'large' glide ratio and landings were very soft.
The Lift to Drag (L/D) ratio was nearly double that of a TU, 0.7.
The slow descent rate was because a lower porosity nylon taffeta and the lifting characteristics of the parachute.
The increased glide was because
Para-Commander Technical Data
Full View of Para-Commander
Rates of Descent vs Weight
Airflow at steady state (no turns or brakes)
Airflow during a right turn with no brakes
Airflow during flare
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