Diana 2 FES

[Jerry Zieba]

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

Video and music by Curt Lewis "95"

Jerry Zieba "ZJ"

[Dan Marotta]

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?feature=youtu.be&v=hQk04eG6K5c
>
> Video and music by Curt Lewis "95"
>
> Jerry Zieba "ZJ"

--
Dan, 5J

[Duster[_2_]]

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

[krasw]

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.

[Chris Wedgwood[_2_]]

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.

[Eric Greenwell[_4_]]

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/motorgliders/publications/download-the-guide-1

[[email protected]]

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

[Chris Wedgwood[_2_]]

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/motorgliders/publications/download-the-guide-1


Take a look at the URL for their website ..

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

[Eric Greenwell[_4_]]

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/motorgliders/publications/download-the-guide-1