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Dick Johnson's wing flattening jig?



 
 
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  #1  
Old August 22nd 10, 05:11 PM posted to rec.aviation.soaring
[email protected]
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Posts: 2,124
Default Dick Johnson's wing flattening jig?

On Aug 22, 10:43*am, JJ Sinclair wrote:
JJ- You're not spillin' the beans on th Mark IV version with the 4th
order reflex compensation are you? I thought we agreed to keep it to
ourselves till 2015.
Are you selling out on me?
UH


At the time of his death, Dick Johnson was also working on a ground-
loop prevent'er and I have his concept drawings. The heart of the
system is a gyro that instantly detects lateral motion while on the
ground. The unit is armed via an oleo-strut micro switch and directs
high pressure air to the opposite wing (ground-loop detected to left =
air directed to right wing). A 2 inch plastic sleeve is mounted inside
both wings with a 10 pound sliding slug that will instantly fly from
the root rib to the wing tip just as soon as the gyro detects a ground-
loop developing. I believe the concept to be sound and I am presently
working on a method of stopping the slug when it reaches the wing tip.
Stat tuned,
JJ


I still think the servo version we were talking about solves this
problem. The motion control program will provide the required decel
rate and permit accel motion and displacement to properly respond to
rate of lateral motion.
Did you review the patent disclosure I sent on this?
Should not have made public till disclosure is signed and prelim
application has been filed.
UH
  #2  
Old August 22nd 10, 11:04 PM
Walt Connelly Walt Connelly is offline
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First recorded activity by AviationBanter: Aug 2010
Posts: 365
Default

Quote:
Originally Posted by JJ Sinclair View Post

JJ- You're not spillin' the beans on th Mark IV version with the 4th
order reflex compensation are you? I thought we agreed to keep it to
ourselves till 2015.
Are you selling out on me?
UH


At the time of his death, Dick Johnson was also working on a ground-
loop prevent'er and I have his concept drawings. The heart of the
system is a gyro that instantly detects lateral motion while on the
ground. The unit is armed via an oleo-strut micro switch and directs
high pressure air to the opposite wing (ground-loop detected to left =
air directed to right wing). A 2 inch plastic sleeve is mounted inside
both wings with a 10 pound sliding slug that will instantly fly from
the root rib to the wing tip just as soon as the gyro detects a ground-
loop developing. I believe the concept to be sound and I am presently
working on a method of stopping the slug when it reaches the wing tip.
Stat tuned,
JJ
Can any of you tell me if the square of the hypotenuse is really equal to the sum of the square of the two adjacent sides or is it just really, really close?

Walt

Last edited by Walt Connelly : August 22nd 10 at 11:54 PM.
  #3  
Old August 23rd 10, 06:01 AM posted to rec.aviation.soaring
Bob Kuykendall
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Posts: 1,345
Default Dick Johnson's wing flattening jig?

On Aug 22, 3:04*pm, Walt Connelly

Can any of you tell me if the square of the hypotenuse is really equal
to the sum of the *square of the two adjacent sides or is it just
really, really close?


I so rarely meet right angles that are truly 90.00 degrees, so I
usually use the more general form of c^2=a^2+b^2-2ab*cosC.
  #4  
Old August 22nd 10, 03:42 PM posted to rec.aviation.soaring
T8
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Posts: 429
Default Dick Johnson's wing flattening jig?

On Aug 21, 4:12*pm, JJ Sinclair wrote:
As a matter of fact I purchased the Wng Flattener from Dick just
before his untimley death. It is necessary to flatten both the top and
bottom of both wings to get maximum perormance increase. You must
carefully remove all wax and contaminates before placing your wings
into the molds. Then plug it into 220 (3-phase) current and select 75
amps to start with. If after an hour the wings arent flat then turn
the selector up to max (100 amps) and wait another hour. I charge
$1000 per side, so both sides of both wings will run you $4000 with a
10% discount for FNG's

Dick also sold me the rights to his Wing Stretcher which will run you
$1000 per meter. Expencive, but one customer is ecstatic over his 30
meter Libelle!
JJ


Dang. My three phase is either 208 or 480. I'm outta luck.

-T8
  #5  
Old August 22nd 10, 02:20 PM posted to rec.aviation.soaring
Dave Nadler
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Posts: 1,610
Default Dick Johnson's wing flattening jig?

On Aug 21, 12:02*am, ryanglover1969 wrote:
Has anyone heard of Dick Johnson's wing flattening jig? I'm interested
in a Discus A and the owner said that this glider has had the wings
flattened. A previous owner of this glider was Wil Schuemann so mabey
he did the work. Anyone have more information about a wing flattening
jig and if it yielded any performance increase?


I hear that UH is in possession of the related wing-stretcher ?
 




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