New Glider Dream Elon Musk Flow

Robotic paint/gelcoat removal and reprofiling.

Cheers Ben

On Friday, February 9, 2018 at 8:08:12 PM UTC-6, Jonathan St. Cloud wrote:
Why has that technology not been used in other gliders?


On Friday, February 9, 2018 at 5:57:15 PM UTC-8, Andrzej Kobus wrote:
On Friday, February 9, 2018 at 1:31:46 PM UTC-5, Jonathan St. Cloud wrote:

We have seen the New Ventus, the JS-3 (very innovative), Dianna 3. So far the South Africans have shown the most original thought.

I think, the most original thought was Diana 2 sparless wing, that allowed the highest wing loading range of any sailplane.

Damage intolerant structure. Difficult to repair if damaged.

Foka 4 and SH-1 also have "Sparless" Wings.

High wings like the JS-3 were pretty standard up through the Ka-6

What's old is new again

And telescoping wings were done in the 70's (Lookup FS-29), as well as the extending TE to change area and camber (FK3 and Sigma)http://www.betsybyars.com/guy/soarin.../70-sigma.html

Mechanics on both of them created quite a workload for the pilot.

By the time the configuration change was complete, the glider had sailed far beyond the thermal.

Thanks for sharing those Sigma details! Fascinating.

Time to start asking for biodegradable gliders. Gelcoat is a major step in that direction but we have a long way to go.

On Friday, February 9, 2018 at 11:11:43 PM UTC-5, Tony wrote:
Foka 4 and SH-1 also have "Sparless" Wings.

You are right but you can't really compare these designs with Diana 2. These early designs had very light wing loading comparing to the massive wing loading allowed in Diana 2.

Wing warping -- end of those gaps -- if nobody has said it already.


At 19:38 10 February 2018, Andrzej Kobus wrote:
On Friday, February 9, 2018 at 11:11:43 PM UTC-5, Tony wrote:
Foka 4 and SH-1 also have "Sparless" Wings.

You are right but you can't really compare these designs with Diana 2.
These early designs had very light wing loading comparing to the
massive
wing loading allowed in Diana 2.

On Sat, 10 Feb 2018 22:44:03 +0000, Howard Banks
wrote:

Wing warping -- end of those gaps -- if nobody has said it already.



The Open class Jantar 2 in the late 70's had a version of this, with
camber changing flaps that have no hinge. The deflection is controlled
by deflection of the continuous upper wing surface...no upper surface
gaps.

Bob

At 22:44 10 February 2018, Howard Banks wrote:
Wing warping -- end of those gaps -- if nobody has said it already.


At 19:38 10 February 2018, Andrzej Kobus wrote:
On Friday, February 9, 2018 at 11:11:43 PM UTC-5, Tony wrote:
Foka 4 and SH-1 also have "Sparless" Wings.

You are right but you can't really compare these designs with Diana
2.
These early designs had very light wing loading comparing to the
massive
wing loading allowed in Diana 2.


E.G. Haase had that on his HKS 3 which he won the WGC in 1958
with. The production version SHK had ailerons though.. The
Wright brothers had that on their designs and patented it, so
Glenn Curtis came up with ailerons, which resulted in a huge
lawsuit.

RO