Doc.-No.: 01/BCTroll Users Manual personal Parachute
Date: 09.03.2004 BCTroll / Firebird/ Relax Container
Issue: 0
Page: 8 of 30
An option is our Troll MDV. The Canopy has a vented bottom Skin that improves low-Altitude
and no Slider opening Performance.
The vents reduce the Time between bottom Skin inflation and full pressurization. The vents are
made of Marquisette/Mesh Fabric used by Pilot chutes.
The Pressure inside of the Canopy is higher than on bottom Surface. The Air normaly escapes
through the vents. We added valves (sleeve type of valve) to prevent this Problem. The valves
allow the Air to enter inside the Canopy, but not to escape again.
The Glide Ratio of MDV Troll is the same than on normal, not vented Troll.
When Slider is used, it should have some „control“ during deployment. This can be obtained by
rubber banding the top of stowed Slider in a rubber band that is attached to a center „C“ line. It
is important to roll the nose of the canopy and stop tracking before deployment to prevent
hard openings.
MDV (Mono Directional Valves)
