Diana-2 and overall performance discussion

Thing is
though, as far as I know, none have crashed or been repaired to
evaluate for their crashworthiness or repairability VS. other models.

Not true. Janusz Centka crashed one in Finland and he walked away from
it without a scratch, he was just bruised up.

The control surface play is certainly an issue. Someone should ask the
factory about that. Is it correctable or not? Was it down to BB or is
it fleet wide?

D-2 was tested quite extensively in Poland by Aviation Institute and
found no problem with that.

In your discussions you forgetting that all gliders manufactured in
Europe are made to EASA standard, not just the German gliders. The
same regulations are applicable to D-2 as well as to V-2 or ASG-29.

Jacek
Pasco, WA

On Aug 6, 11:33*pm, wrote:
Thing is

though, as far as I know, none have crashed or been repaired to
evaluate for their crashworthiness or repairability VS. other models.

Not true. Janusz Centka crashed one in Finland and he walked away from
it without a scratch, he was just bruised up.

The control surface play is certainly an issue. Someone should ask the
factory about that. Is it correctable or not? Was it down to BB or is
it fleet wide?

D-2 was tested quite extensively in Poland by Aviation Institute and
found no problem with that.

In your discussions you forgetting that all gliders manufactured in
Europe are made to EASA standard, not just the German gliders. The
same regulations are applicable to D-2 as well as to V-2 or ASG-29.

Jacek
Pasco, WA


Diana 2 was tested by two test pilots, past PZL-SZD test pilots.
Testing was done in ideal conditions. Pilots who flown/own Diana 2
were few times in trouble during the flight when they lost control.
Kawa lost control on RP during final glide and Ghostner was in spiral
during the flight without chance to correct turning. At last he used
highest forces but was ready to jump from it away. At last Kawa has
trouble with blocked airbrakes in Chille and was lucky that it was
before start line near arifield.

About Diana 2 in desing and production faults know Polish Aviation
Institute, Europan EASA and Australian CASA. It is reason why Diana 2
is without Certificate, flying on Polish registration only (two are in
USA as Experimental Category). It is reason why the life time is
limited to 12000 hours.

So little correction not only for Jacek Kobiesa who is originaly
Polish and proud of Polish products


Cheers, Hana

On Aug 6, 11:33*pm, wrote:
Thing is

though, as far as I know, none have crashed or been repaired to
evaluate for their crashworthiness or repairability VS. other models.

Not true. Janusz Centka crashed one in Finland and he walked away from
it without a scratch, he was just bruised up.

The control surface play is certainly an issue. Someone should ask the
factory about that. Is it correctable or not? Was it down to BB or is
it fleet wide?

D-2 was tested quite extensively in Poland by Aviation Institute and
found no problem with that.

In your discussions you forgetting that all gliders manufactured in
Europe are made to EASA standard, not just the German gliders. The
same regulations are applicable to D-2 as well as to V-2 or ASG-29.

Jacek
Pasco, WA

Diana 2 was tested by two test pilots, past PZL-SZD test pilots.
Testing was done in ideal conditions. Pilots who flown/own Diana 2
were few times in trouble during the flight when they lost control.
Kawa lost control on RP during final glide and Ghostner was in spiral
during the flight without chance to correct turning. At last he used
highest forces but was ready to jump from it away. At last Kawa has
trouble with blocked airbrakes in Chille and was lucky that it was
before start line near arifield.

About Diana 2 in desing and production faults know Polish Aviation
Institute, Europan EASA and Australian CASA. It is reason why Diana 2
is without Certificate, flying on Polish registration only (two are in
USA as Experimental Category). It is reason why Diana 2 life time is
limited to 1.200 hours.

So little correction not only for Jacek Kobiesa who is originaly
Polish and proud of Polish products

Cheers, Hana

Originally Posted by tommytoyz[_2_]

I find it amazing that there are not more pilots flying the Diana-2 at
the worlds, since it seems to be head and shoulders above anything
else in the 15M. I guess too many pilots do not like the side stick or
lack of manufacturer reputation. Maybe the Australia fiasco stopped
many. Or are there other negative factors?

Other than that, I can not think of any other reason to pass it up for
a competition. If it were a new unproven design I could understand,
but it's not new and has already won a boatload of competitions,
despite flying in so few numbers. They always seem to clean up no
matter the competition.

Or is it that people buy what everyone else buys kind of thing?

I also think that the ever increasing wingspan in the open class has
reached a point where more does not mean necessarily better. Granted
the EB29 is leading, but look at the daily score sheets and the
performances seem so close, it's just very marginal from one to the
other. I think new materials and new structural designs to save weight
will give better results in the future, judging by the Diana-2
approach in the 15M class. Less weight = less required wing area,
higher aspect ration of wing, etc...

Feel free to discuss, as I don' see many discussions on sailplane
performance these days. It used to be a hot topic.

Yes I agree with you. It is really nice to discuss it with photos. I appreciate it if there is an image of that Diana-2.