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The article describes the construction of 12 inch diameter parachute with 8 gores and a 2 inch diameter spill hole. This web page will produce patterns for other sizes of parachutes.
When a parasheet inflates, the canopy material is "gathered" by the shroud lines, forming an approximately hemispherical shape. A parachute with a shaped canopy is more efficient than a parasheet, since less fabric is required to produce the inflated shape.
This useful web-based application generates gore/panel cutting patterns for hemispherical (ellipsoidal) and toroidal parachutes. Easy to use, simply enter parachute parameters such as diameter, spill hole size, number of panels...then click "Generate Pattern".
To create a parachute you create a sewing pattern called a ``gore''. This pattern is typically 1 / 6th of the final parachute. More than 6 gore patterns can used but the gore pattern is a lot thinner. For example a 20 piece hemisphere parachute gore is used to create a ``bol'', for use as line junk, sky junk, laundry. This pattern has been ...
Selection of the number of gores to be used in the parachute was based on re- taining the existing full-scale proportionality between the band gore width (W2) and the band gore height (H2) and the proportionality between the disk gore width at the gap (W1) and the disk gore height (Hi).
This software generates gore/panel patterns for spherical and toroidal parachutes. Spherical Parachute: Toroidal Parachute: Usage. To generate a elliptical parachute cutting pattern with 12 panels, a diameter of 0.5 m and a spill hole with 0.05 m diameter run the following command: Example.
Deployed canopy takes on the shape of a hemisphere. Three dimensional hemispherical shape divided into a number of 2-D panels, called gores. Angle subtended on the left hand side of the pattern is 60 degrees. When all six gores are joined they complete the 360 degree circle.
