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Dear visitors, if you have nice photo of our model and would like to share it with others, please send it to us. (info@f3j.cz) (Please send photos in full size for next modification.)
Ian Duff win with Aspire Interglide F3J Eurotour
Electro - Aspire (conversion from light standard glider)
(More photos is in the testing photogall.)
Conversion of Aspire to electro F5J competition glider more details at RCgroups
Mike Smith win with Aspire South West Classic F3J
In Czech republic is winter, flying has winter sleep.
F3J European Championship Poland 2009
Pavel Kristof 2. place (Aspire team.)
Congratulations!
Junior team 2. place (Jan Leiner Aspire team)
Congratulations for all pilots !
Senior team 3. place
Congratulations for all pilots !
World cup, Eurotour, City cup Holic 2009 (Slovakia)
Pavel Kristof 2. place Congratulations!
Little Boston and his
grandfather Jim McDougall
(Thank's)
Nice fotos from Vancouver Island, Canada
Thomas Raubner and Victor (Thank's)
F3J & F3B guru Petr Fusek & Jane and long flight, Congratulations !
Ben Clerx win Visalia cup with Aspire
Congratulations Ben !
Czech F3J National Cup Přílezy 2008
Congratulations for all pilots !
Jiří Ducháň 1. place Pavel Krištof 2. place (Aspire team.) Vítězslav Štěrba 3.place
Jakub Lžíčař (Junior) 6. place over all. Jan Leiner (Junior from Aspire team) 11. place over all.
F3J World Championship Turkey 2008
Jiří Ducháň 2. place (" Our world champion ")
(More photos is in the competitions photogall.)
Junior team 3. place
Senior team 2. place
Jan Leiner junior from Aspire team. " Little pilot and big Aspire "
F3J Euro Tour, World Cup Podhorany 2008
Pavel Krištof (From Aspire team) 4. Place over all.
F3J World Cup Holic (Slovakia)
Jan Leiner (Junior from Aspire team) 1. Place Place 3 over all. (More photos is in the competitions photogall.)
F3J Euro Contest Lodi (Italy)
Manuel Reinecke is 3. Place (Juniors) Place 14 over all. (More photos is in the competitions photogall.)
Standard helper day on the competition
One standart helper day with GPS, track log is from PDA Asus 636n. Track is 9,2 km long.
Aspire 2,4 GHz friendly
Czech F3J National Cup Podhořany 2007
Congratulations for all senior pilots ! (More photos is in the copet. photogallery sequence photos from final landing is very interesting.)
Congratulations for all junior pilots !
Little Adam (Pazderka junior) is World Champion for year 2020. Today only in the baby-coach.
Germany F3J DMFV National Cup = ASPIRE festival !!!
Congratulations for all ASPIRE pilots ! (More photos is in the training photogallery.)
( Total was 5 ASPIRE in the Fly off !)
Christian Reinecke won the Juniors Holland Glide with ASPIRE !
Congratulations Christian!
Christian Reinicke won the Juniors Euro Contest in Belgium !
Congratulations !
Thorbjřrn Jespersen Norway and Aspire
More new photos in the training photogallery.
Andreas Herrig The F3J airfoils AH141_3 and AH141_4 (used on the Aspire)
Having been asked for an F3J airfoil for a long time, problems in the progress with our Freestyler 3 slope glider and the presentation of the Pike Perfect gave motivation for following this request. Intention of Lubos Pazderka, probably still well known in the F3J scene, was to make a new plane with allround capabilities. It should follow a one-for-all concept, slightly focussing on weak conditions. Finally, the Aspire came out as a relatively large plane with 3.7 m span, which should provide extraordinary glide ratio and low sink rate.
Realizing that planes equipped with airfoils showing very peaky
performance characteristics (e.g. HQW-2/8) cannot fully
transform this aerodynamic potential into good flight
performance in typical turbulent weather, a broader operating
range was oriented to.
Legendary airfoils like the MH32 and the SA7035 can offer excellent sink rates combined with good performance in
moderately accelerated flight, under the boundary condition of
sufficient relative thickness for fulfilling structural demands
in launch.
However, they are not perfectly adapted for the low wing
loadings of < 30 g/dm˛ feasible with todays building techniques
and suffer from losses due to unfavorably large laminar
separation bubbles. A philosophy going more into the direction
of DLG designs is necessary.
In this area, again, Mark Drela set an extraordinary high
benchmark with his sophisticated Supra design. This approach is
followed by most modern gliders, especially the Pike Perfect,
and as well the Aspire.
But compared to the AG40d or the MH32 for example the mid wing
airfoil AH141_3 shows significantly increased maximum lift and
offers more headroom at the upper end of the laminar drag
bucket. This helps to 'survive' critical situations, when more
maneuvering and centering tight thermals is necessary, this also
when wing loading is not particularly low. In such tight
thermals and in float conditions a positive flap setting of
about 2-3° will be beneficial. However, compared to the Perfect,
the cl-max increase was not driven very far, because this costs
sink performance in the design lift range. Also the concept of
changing airfoils in the outer wing to adjust to the lower
Reynolds numbers is slightly different to the Perfect or the
Supra. The outer wing airfoil was not purely designed for
maximizing glide ratio in straight flight, but more weight was
put on performance at higher lift coefficients, which should
both improve circling and dead air floating. While the root
airfoils relative thickness of 8.55% was determined mainly by
structural reasons, especially with a large plane as the Aspire,
the thickness of the outer airfoil is driven not so much by
loads. To avoid excessive bubble drag calls for a reduction of
relative thickness. But the need to achieve a broad operating
range of lift coefficients sets some limits and the outer wings
AH141_4 was designed quite conservatively.
Climbing out in weak thermals easily often is more important
than the last percent of straight line performance. So in the
end, thickness of the AH141_4 was only slightly reduced to 8.3%,
besides other measures to improve low Reynolds number behaviour.
Aspire V-tail
Aspire and Tuomuo Kokkonen (Finland)
Aspire X-tail
More new photos aspire X-tail in the testing photogallery.
Victor
More new photos by friends in the photogallery training.
Aspire
Very nice model and very nice young man !!!! ( Aspire is better !!!!)
Victor review at Quiet Flyer Magazine
Victor review at QF magazine. SeeOctoberissueQFM (page 88-92)
or click here to downloadin pdf..
Viking Race 2006 (Martin Herrig with Victor second place.)
Here is link to official Viking Race site. Report and more photos at Kevin's site.
New model for F3J - ASPIRE
Welcome to composite RC sailplanes website. Here you will find everything you need for joyful F3J and F3B experience.
We offer wide selection of F3J/F3B models from extreme light models for "dead air" weather to heavy duty F3B full UHM carbon models that are literally unbreakable.Check the technology section for various technologies.
Negative mold composite technology ensures that all models have exactly same characteristics from the first one in production to the last one made. ARF for us means realy almost ready to fly check the "all what you get from us" section in models and see for yourself.
All you will need to prepare the model for flight is sharp knife, drill and electronic equipment you want to mount. In few hours your brand new bird is ready to fly!
Models we make are good and our results say for themself. Just for fun Lubos won European championship with Eraser. He missed world champion title in Finland for 5 cm! Landing in second final round to 95 instean of 100 cost him 5 points, he was fourth with 4 points behind world champion.
This is why we build Aspire - this plane is contorleable to the point that it is very hard to miss the circle of 2 meters in diameter which brings 100 points.
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