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WARNING (according EN certification rules)
Use of this parachute with any alternative inner container: the speed
of opening and opening shock test has been completed using the
inner container supplied. Use of any other inner container may
produce different results (including failure)
8.3 Constructive characteristics
Diagonal suspension and flight direction
The diagonal „diamond-configuration” is one of the main innovations. Due to the
diagonal flight direction, the calculative aspect ratio increases from 1 (square) to 2
(diagonal square). As the DIAMONDcross has a defined forward movement, the low
sink rates are not only influenced by the drag coefficient but, similar to a wing, also to
the lift coefficient. The higher aspect ratio that results from the diamond configuration
is essential for the resulting flight and gliding qualities.
No pendulum tendency immediately after the opening
By contrast to other reserve parachute systems, the DIAMONDcross does not exhibit
a pendulum tendency.
The pendulum tendency can lead to severe injuries, particularly in the case of
deployments at low altitudes.
To avoid this effect by design, the DIAMONDcross has a special trim that leads to a
strong S-shape in the cross section of the parachute. As tests have shown, this
causes a righting momentum that reliably dampens pendulum immediately after the
opening.
When the DIAMONDcross opens, after a short deep stall phase, the canopy reliably
changes into a steady, pendulum stable flight phase with very low sink rates.
