Diana 2 FES

Diana 2 FES flies in the USA.
https://www.youtube.com/watch?featur...&v=hQk04eG6K5c

Video and music by Curt Lewis "95"

Jerry Zieba "ZJ"

So...Â* The video showed the prop spin up on the ground but did not show
the take off.Â* Is it a self launcher or not?

On 12/8/2019 3:37 PM, Jerry Zieba wrote:
Diana 2 FES flies in the USA.
https://www.youtube.com/watch?featur...&v=hQk04eG6K5c

Video and music by Curt Lewis "95"

Jerry Zieba "ZJ"

--
Dan, 5J

Really Dan, pay attention. "FES" stands for "front engine sustainer", whereas "FES" stands for "front engine self-launcher".

OK, seriously, the Diana site says the Diana 2 and 3 are optioned for "FES" capability (which they define as front engine sustainter). However, they also state, "The Diana 2 with 185 kg of empty mass can be self-launched without water ballast."

A friend swears the Diana line either meets or exceeds the performance of any other competition glider to date (stated before Ventus 3 and JS3 were produced).
Dusty

On Monday, 9 December 2019 02:05:24 UTC+2, Duster wrote:

A friend swears the Diana line either meets or exceeds the performance of any other competition glider to date (stated before Ventus 3 and JS3 were produced).
Dusty

It is still true, I've seen it with my own eyes.

On Monday, December 9, 2019 at 12:05:24 AM UTC, Duster wrote:
Really Dan, pay attention. "FES" stands for "front engine sustainer", whereas "FES" stands for "front engine self-launcher".

OK, seriously, the Diana site says the Diana 2 and 3 are optioned for "FES" capability (which they define as front engine sustainter). However, they also state, "The Diana 2 with 185 kg of empty mass can be self-launched without water ballast."

A friend swears the Diana line either meets or exceeds the performance of any other competition glider to date (stated before Ventus 3 and JS3 were produced).
Dusty


Front Electric Sustainer actually.

Chris Wedgwood wrote on 12/11/2019 2:38 AM:
On Monday, December 9, 2019 at 12:05:24 AM UTC, Duster wrote:
Really Dan, pay attention. "FES" stands for "front engine sustainer", whereas "FES" stands for "front engine self-launcher".

OK, seriously, the Diana site says the Diana 2 and 3 are optioned for "FES" capability (which they define as front engine sustainter). However, they also state, "The Diana 2 with 185 kg of empty mass can be self-launched without water ballast."

A friend swears the Diana line either meets or exceeds the performance of any other competition glider to date (stated before Ventus 3 and JS3 were produced).
Dusty


Front Electric Sustainer actually.

Actually not, according the FES people:

"FES is efficient and innovative Front Electric Self-launch / Self-sustainer
propulsion system for powered sailplanes, developed and produced by LZ design
company located in Slovenia in the middle of the Europe."

I believe it was "sustainer" initialiy, but with so many FES equipped gliders
capable of self-launch, the meaning has been expanded.

My favorite of the FES self-launchers is the 13.5M minLAK FES. Small, light, easy
to live with, but with good gliding and power-on performance. It has enough water
ballast capacity to use the strong days well, at least where I live in the Pacific
Northwest.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

FES is powering self-launchers, but not in certified EASA aircraft.
The Alisport Silent and other similar ultralight sailplanes have been self-launching reliably. Bigger sailplanes like the LAK17 have performed SL but, AFAIK, only as experimental procedures by the pilot-owner. I have personally seen it in a LAK 17cFes, when the owner of the factory was the PIC.

Aldo Cernezzi
www.voloavela.it

On Wednesday, December 11, 2019 at 3:11:22 PM UTC, Eric Greenwell wrote:
Chris Wedgwood wrote on 12/11/2019 2:38 AM:
On Monday, December 9, 2019 at 12:05:24 AM UTC, Duster wrote:
Really Dan, pay attention. "FES" stands for "front engine sustainer", whereas "FES" stands for "front engine self-launcher".

OK, seriously, the Diana site says the Diana 2 and 3 are optioned for "FES" capability (which they define as front engine sustainter). However, they also state, "The Diana 2 with 185 kg of empty mass can be self-launched without water ballast."

A friend swears the Diana line either meets or exceeds the performance of any other competition glider to date (stated before Ventus 3 and JS3 were produced).
Dusty


Front Electric Sustainer actually.

Actually not, according the FES people:

"FES is efficient and innovative Front Electric Self-launch / Self-sustainer
propulsion system for powered sailplanes, developed and produced by LZ design
company located in Slovenia in the middle of the Europe."

I believe it was "sustainer" initialiy, but with so many FES equipped gliders
capable of self-launch, the meaning has been expanded.

My favorite of the FES self-launchers is the 13.5M minLAK FES. Small, light, easy
to live with, but with good gliding and power-on performance. It has enough water
ballast capacity to use the strong days well, at least where I live in the Pacific
Northwest.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1


Take a look at the URL for their website ..

http://www.front-electric-sustainer.com/

Chris Wedgwood wrote on 12/11/2019 1:24 PM:
On Wednesday, December 11, 2019 at 3:11:22 PM UTC, Eric Greenwell wrote:
Chris Wedgwood wrote on 12/11/2019 2:38 AM:
On Monday, December 9, 2019 at 12:05:24 AM UTC, Duster wrote:
Really Dan, pay attention. "FES" stands for "front engine sustainer", whereas "FES" stands for "front engine self-launcher".

OK, seriously, the Diana site says the Diana 2 and 3 are optioned for "FES" capability (which they define as front engine sustainter). However, they also state, "The Diana 2 with 185 kg of empty mass can be self-launched without water ballast."

A friend swears the Diana line either meets or exceeds the performance of any other competition glider to date (stated before Ventus 3 and JS3 were produced).
Dusty


Front Electric Sustainer actually.

Actually not, according the FES people:

"FES is efficient and innovative Front Electric Self-launch / Self-sustainer
propulsion system for powered sailplanes, developed and produced by LZ design
company located in Slovenia in the middle of the Europe."

I believe it was "sustainer" initialiy, but with so many FES equipped gliders
capable of self-launch, the meaning has been expanded.

My favorite of the FES self-launchers is the 13.5M minLAK FES. Small, light, easy
to live with, but with good gliding and power-on performance. It has enough water
ballast capacity to use the strong days well, at least where I live in the Pacific
Northwest.

Take a look at the URL for their website ..

http://www.front-electric-sustainer.com/

I did that before I posted the sentence, which is quoted from their website; in
fact, it is the first sentence on the website. Go by the site's content, not the URL!

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1