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Posted by Knoll53 | Feb 26, 2016 @ 07:40 PM | 1,200 Views
My Nurflügel program looks like this.
Posted by Knoll53 | Feb 02, 2016 @ 04:50 PM | 1,892 Views
Concept sketch for 20:1 aspect ratio, untapered, swept wing, 22 degree nose angle.

Intended use is for thermal flying and the odd 100mph dive from those thermals.

Target wing loading = 11oz./sf. (30gm/dm)
Posted by Knoll53 | Dec 29, 2015 @ 02:49 PM | 5,199 Views
Just got a new camera that shoots better video, but once Youtube does it's conversion, there will be a loss. This is a test.

Why I didn't go flying today - conc block (2 min 59 sec)

Posted by Knoll53 | Dec 23, 2015 @ 05:55 PM | 2,807 Views
Finally got some good lift out at the coast and got a little test flying in. Need to reduce rates all around.

Jet 48 - good lift (3 min 46 sec)

Posted by Knoll53 | Oct 30, 2015 @ 10:39 AM | 3,247 Views
Jet 48 first flight (6 min 2 sec)

Posted by Knoll53 | Sep 26, 2015 @ 10:56 PM | 3,508 Views
BOT fly bys (1 min 8 sec)

BOT tail slide (2 min 40 sec)
...Continue Reading
Posted by Knoll53 | Sep 22, 2015 @ 11:28 PM | 3,195 Views
new camera mount

Bird of Time at beach - cloudy - 120 degree lens (7 min 6 sec)

Posted by Knoll53 | Sep 19, 2015 @ 10:59 PM | 3,205 Views
During the dives, there is what sounds like a stall indicator buzzer going off. Not sure what it is really. Maybe the covering on the temporary hatch.

Bird of Time 40 minute thermal (12 min 35 sec)

Posted by Knoll53 | Sep 18, 2015 @ 06:36 PM | 3,900 Views
slope soaring in Virginia Beach?
Posted by Knoll53 | Sep 18, 2015 @ 04:02 PM | 3,850 Views
Bird of Time pulls high start stake out of sand and almost hits wing.

Bird of Time - high start stake puller (0 min 32 sec)

Posted by Knoll53 | Sep 18, 2015 @ 03:53 PM | 3,515 Views
with a little help of the avian community

Bird of Time - with birds (3 min 13 sec)

Posted by Knoll53 | Sep 13, 2015 @ 07:23 PM | 3,309 Views
I've almost forgotten how easy and slow flying can be.
Bird of Time T-tail Slope Soaring (3 min 54 sec)

Posted by Knoll53 | Jun 13, 2015 @ 01:58 PM | 3,532 Views
Here is the current 48" wingspan x 60" long version.
Single fin
Higher aspect ratio wing with a wing strake
Posted by Knoll53 | Jun 06, 2015 @ 06:25 PM | 3,134 Views
a more floaty version
Jet
Posted by Knoll53 | May 11, 2015 @ 01:17 PM | 5,596 Views
At 20 oz. AUW this little plane will have a 13oz./s.f. wing loading. With a 16" chord, this should be flyable most days of the year. my guess is that it will fly in a 12mph wind at the beach.

jet - core cut (1 min 28 sec)

Posted by Knoll53 | Oct 28, 2014 @ 04:06 PM | 4,459 Views
This is an evolution of the SW-2. Same airfoils but with a different plan form and flap layout. This layout should be more versatile with flaps that are only slightly pitch positive.
Posted by Knoll53 | Oct 11, 2014 @ 05:48 PM | 4,648 Views
Spent a few hours trying to be a hero and fly with a high performance aft CG, then moved the CG forward to find a better handling plane. Elevator throws reduced to minimum. Nice little hyper stall with flaps and full nose up.

SW 7 ... Forward CG (1 min 25 sec)

Posted by Knoll53 | Oct 10, 2014 @ 12:48 AM | 4,654 Views
Pulling back with full flaps is not such a smooth ride.

SW 7 tapered flaps testing (0 min 45 sec)

Posted by Knoll53 | Oct 06, 2014 @ 12:20 PM | 4,958 Views
With the potential of lots of highly cambered wing, this one could be a floater, even at 10oz. /s.f.