First Flight: Anhtares 23E

[Andreas Maurer]

The Lange guys at Zweibruecken got themselves a christmas present,
too:
The new Antares 23E (which lends its wing to the Quintus) also had its
first flight yesterday.

No photos available yet.


Andreas

[Dave Nadler]

Pictures Here:
http://lange-aviation.com/htm/english/news/news_2011_12_23.html

Lange's Antares 23E and Schempp-Hirth's Quintus have just completed
their first flights. These gliders were introduced and displayed in
April at the Aero show, and are now entering serial production
(8 sets of wings are already built at last report). At least 10
of these gliders will be racing in the upcoming world championships
in Uvalde.

These gliders are intended to be the ultimate open-class racers
while maintaining excellent handling, climb, and very fast roll
rate. The Boermans-designed wing for both these gliders is built
by Lange. Lange's wing tip/winglet is by Boermans but Schempp-
Hirth adds a bit of dihedral to the outer panels and different
winglets (by Dr. Mark Maughmer of Penn State). Lange offers the
electric propulsion system used in the Antares 20E and Arcus E,
while Schempp-Hirth offers a 70hp fuel-injected Solo-Binder-ILEC
propulsion system.

Why only 23 meters for a new open class ship ? Well, all the new
open-class gliders are designed to the 850kg max (certification
and IGC limit). To get a high wing-loading as optimal for these
newer designs (especially in strong conditions) at 850kg, either
the span is limited (thus 23-meters for Antares 23E and Schempp-
Hirth Quintus), or an extreme aspect ratio is required (Dick
Butler’s Concordia).

Some numbers.
60:1 at 78 knots (knots, no typo) at max loading.
250 liters of water gives a wing-loading range of 40-58 kg/m2 (8.2-11.9 lbs/ft2)
That's almost a 50% increase in wing-loading from minimum to maximum.

I can still get you one for the 2013 season ;-)
Happy Holidays,
Best Regards, Dave "YO electric"

[Tony[_5_]]

On Dec 24, 9:12*am, Dave Nadler > wrote:
> Pictures Here:http://lange-aviation.com/htm/english/news/news_2011_12_23.html
>
> Lange's Antares 23E and Schempp-Hirth's Quintus have just completed
> their first flights. These gliders were introduced and displayed in
> April at the Aero show, and are now entering serial production
> (8 sets of wings are already built at last report). At least 10
> of these gliders will be racing in the upcoming world championships
> in Uvalde.
>
> These gliders are intended to be the ultimate open-class racers
> while maintaining excellent handling, climb, and very fast roll
> rate. The Boermans-designed wing for both these gliders is built
> by Lange. Lange's wing tip/winglet is by Boermans but Schempp-
> Hirth adds a bit of dihedral to the outer panels and different
> winglets (by Dr. Mark Maughmer of Penn State). Lange offers the
> electric propulsion system used in the Antares 20E and Arcus E,
> while Schempp-Hirth offers a 70hp fuel-injected Solo-Binder-ILEC
> propulsion system.
>
> Why only 23 meters for a new open class ship ? Well, all the new
> open-class gliders are designed to the 850kg max (certification
> and IGC *limit). To get a high wing-loading as optimal for these
> newer designs (especially in strong conditions) at 850kg, either
> the span is limited (thus 23-meters for Antares 23E and Schempp-
> Hirth Quintus), or an extreme aspect ratio is required (Dick
> Butler’s Concordia).
>
> Some numbers.
> 60:1 at 78 knots (knots, no typo) at max loading.
> 250 liters of water gives a wing-loading range of 40-58 kg/m2 (8.2-11.9 lbs/ft2)
> That's almost a 50% increase in wing-loading from minimum to maximum.
>
> I can still get you one for the 2013 season ;-)
> Happy Holidays,
> Best Regards, Dave "YO electric"

only 60:1????

[Dave Nadler]

On Saturday, December 24, 2011 11:33:07 AM UTC-5, Tony wrote:
> only 60:1????

Right. More span would yield higher LD, but
this is counter-productive if it yields lower
high-speed performance and/or lower max loading
and/or lower maneuverability.

Martin Heide has taken a different approach
with the ASH-30 (ie higher span, lower max
loading, higher max LD)...

We'll see which works best in Uvalde !

See ya, Dave "YO electric"

PS: 60:1 for real, not just for the brochure.

[John Cochrane[_2_]]

>
> Some numbers.
> 60:1 at 78 knots (knots, no typo) at max loading.
> 250 liters of water gives a wing-loading range of 40-58 kg/m2 (8.2-11.9 lbs/ft2)
> That's almost a 50% increase in wing-loading from minimum to maximum.

Price? Just give us a hint. More or less than the national debt of
Greece?

John Cochrane

[Dave Nadler]

On Saturday, December 24, 2011 4:17:49 PM UTC-5, John Cochrane wrote:
> Price? Just give us a hint. More or less than the national debt of
> Greece?

Well, that would depend on which currency you use,
and whether subjected to a "purely voluntary non-
CDS-triggering haircut" ;-)

Happy Holidays,
Best Regards, Dave "YO electric"

PS: I can still get you one for 2013 but you;d better hurry ;-)