Double Parasled

In the beginning fifties William Allison had patented his "flexible kite". Frank Scott and Ed Grauel had developed this design to the kite, today known as sled-kite. Next step was Ed Grauel and his "bullet-kite". The stability of kite was further improved by introducing cells. Finally Nick Morse has developed the parasled, on which he replaced the longerons with open cells.
Two of these parasleds sewn together to one kite is the "double-parasled".
Unfortunately the magnification of this kite brings us back to the longerons. You need 6 longerons (4 mm CFK) for stabilizing the kite. Further you need spars (2 mm GFK) to open the cells and protect them for collapsing.
This plan is a downsized version of a plan from John Verheij with a surface of 3.5 m².
The original plan has 15 m², a little too big for me. If you multiply all measurements of this plan with factor 2.1153846 (or 110/52), you will get the original measurements. Then the 4 mm CFK-longerons have to replaced with 6 mm CFK.

parasled   14kB gif

Fig.1. templates for double parasled (without hems and seams) in cm

parasled (front)  4kB gif

Fig.2 Front view and assembly sequence

-Stabtasche- means pocket, -Längstäbe- means longerons and their pockets

Construction tips:

Book tips:

©1997 Thomas-Michael Rudolph