On Nov 12, 3:01*pm, "noel.wade" wrote:
On Nov 12, 8:15 am, Jim Archer wrote:

At 03:18 12 November 2008, Bernie wrote:

It's archived he

http://web.archive.org/web/200502061...a.org/Magazine....

never mind the Johnson report, where is there one for sale? *I want one!
"Growing out" of your LS cockpit? *I'll trade you a Kestrel 17...
Though I do love the Kestrel.

Jim -

I've flown an LS-4 and love it; but the LS-3/17 to me is a bit of an
odd duck. *The tip extensions have no control surfaces and are fairly
thick/cambered. *This restricts the ballast you can carry and the
speeds you can fly (especially when it comes to reflexed flap
settings). *IIRC, the Johnson reports only showed an extra 3 - 4
points of L/D (from the original 39:1 or 40:1)...

Since you can't fly fast with the flaps reflexed and you can't carry
ballast, the wing-loading is going to be lower and your flaps will be
less-optimal and therefore IMHO the extended wingtips aren't going to
be much (if any) benefit - especially in strong conditions. *I could
see them helping out on a light/"scratchy" day; but that's about it.

And for the record, I'm not knocking the base LS-3 or LS-3a design...
Of the pre-ASW-20 flapped ships, I think its one of the best.

Take care,

--Noel
(DG-300 driver, flapped-ship-dreamer)

Pre ASW-20 flapped ship?