Vertical Position CoG

[Thomas]

Hello,

I plan to equip my Rebel with a recovery parachute, since I like to have
the additionality safety especially in a crowded airspace here in
Europe. BRS as manufacturer of the ballistic system is currently
calculating size and attachment points. What is missing for this is the
vertical position (height! above floor) of the center of gravity
(horizontally is 12 .. 19,7 inches)
MAM is not giving an answer, hopefully one of you knows.

So, do you know which vertical range is allowed for CoG for a rebel?
Or what will be a typical figure for a 1650 rebel with a rotax engine?


Thomas
433R






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[schaumr]

Thomas,

I am enstalling a BRS softpack 1600 in my rebel under the guidance of Jeffrey
Peltier, en engineer at BRS in Minneapolis. My Rebel is still years away from
flying, but I thought it necessary to consider the design of the chute and its
support structure while working on the enterior. I am happy to share what I
know, and the design I have "tentatively" come up with. Having said that,
after I sent Jeff a copy of the CG table for the Rebel (from another builder)
there was very little deliberation about where the chute should go given the
load carrying capacity of the cargo area. As you probably know by now, the
chute sits on two rails. My installation has the rails attached to the floor
over the first bulkhead forward of bulkhead 'A', and angling back to
bulkhead 'A' at the roof to keep the chute perpendicular to the roof. The
chute sits about 2-3 cm from the roof skin. Too much to put into e-mail
here. Contact me at schaumr at hotmail.com if you want to chat further.

Rob
Rebel 786


Who On 8/27/2010 9:12 PM, rebel@tbreitbach.de wrote to rebel-builders:

-> Hello,
->
-> I plan to equip my Rebel with a recovery parachute, since I like to have
-> the additionality safety especially in a crowded airspace here in
-> Europe. BRS as manufacturer of the ballistic system is currently
-> calculating size and attachment points. What is missing for this is the
-> vertical position (height! above floor) of the center of gravity
-> (horizontally is 12 .. 19,7 inches)
-> MAM is not giving an answer, hopefully one of you knows.
->
-> So, do you know which vertical range is allowed for CoG for a rebel?
-> Or what will be a typical figure for a 1650 rebel with a rotax engine?
->
->
-> Thomas
-> 433R
->
->
->




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