[MHml] [jordan drogue
rob dalton
cateran1949 at yahoo.co.uk
Wed Nov 22 10:19:04 EST 2006
No argument with this, but was considering a separate, larger-diameter Jordan-style drogue instead of a sea anchor.
Robert
Peter Southwood <peter.southwood at telkomsa.net> wrote:
Hi Rob,
As I understand it the length is important to keep the line immersed and in unbroken water at all times. If it is shortened too much it may fail.
Cheers,
Peter
----- Original Message -----
From: rob dalton
To: Informed discussion of multihull issues
Sent: Tuesday, November 21, 2006 6:40 AM
Subject: Re: [MHml] [jordan drogue
I was tawling through the archives and came up wit the discussion of Jordan drogues and parachutes, wher someone suggested using a Jordan drogue as the line to tether the chute. It makes sense to me except that the drogue would have to be retrieved before the chute could be deployed.
I was wondering about the optimum size of drogue. The present size on a Jordan drogue seems to work but I couldn't see any work done on optimising the diameter. They seemed to have a guess that worked and left it at that. If the dorgues were larger, then the length of line needed would be less. Double the diameter, halve the number and you double the area. Possibly a series of larger drogues could take the place of a parachute if the drogues were sufficiently large, removing the problems of deflating with waves and damping down yawing,
Robert
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