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Libelle201B's blog
Posted by Libelle201B | Sep 14, 2014 @ 12:48 PM | 1,195 Views
Got the Ka-8 together (pics) and here are my thoughts on the first 3 flights (aprox 30 minutes of flying). The first flight required a fair amount of down elevator to keep it flying so after a pass or two on the hill I brought it in for a landing. Looking at the elevator/stab there was about 1/4 inch down trim deflection in the elevator due to the trim change. (cg was at the designated location per plans) I added about 1/2 ounce of lead to the nose and brought the trim up 3 or four clicks. The second launch was quite different with the plane going immediatly into a shallow dive and pulling back on the elavator to counter the shallow dive sent the plane into a sereies of very serious PIO's (pilot induced occilations) with the outer wings flexing to the max. After what seemed like an eternity I got the plane flying again with low rates stitched on but it still had a tendancy to dive so more and more back trim to compensate. Eventually with some effort I got to a decent altitude and some breathing room. More back trim eventually produced the flying characteristics one would expect and things settled down considerably. What I did note is that for some reason if this plane starts flying much above a slow glide ie a fast glide it wants to tuck under and literally go into a self imposed death dive. The only thing I can figure out is that as the airspeed increases and the AOA (angle of attack) decreases the outer wingtips are twisting downwards at the leading edges forcing the plane...Continue Reading
Posted by Libelle201B | Sep 14, 2014 @ 11:20 AM | 993 Views
Here are three pics of a classic sea breeze front often found along coastlines where the warmer land air comes into contact with the cooler (heavier) air of the ocean or water mass. These fronts can extend for many many miles and are very well defined. Soaring along these fronts will take you a long ways, unfortunately in S FL you would have to deal with Class C and B airspace and you would be traveling just above highly populated areas.
Posted by Libelle201B | Jun 29, 2014 @ 10:05 AM | 1,369 Views
Still working on my Brian Agnew Banshee 2 meter TD contest sailplane. I remember flying Brian's personal Banshee way back in the late 80's I thing and it fit me like a glove. Back then 2 meter was still very popular in the contest circuit here in FL with lot's of 2 meter kits to pick from. The Banshee is a real beauty and I was able to find one NIB in the "classified" section of RCG. It takes me much longer now to finish a kit than in the past when I would have one ready to fly in a matter of weeks or a month or so max. Based on my procrastination I "hope" to have it in the air in a few months.
Posted by Libelle201B | Apr 08, 2013 @ 05:20 PM | 2,443 Views
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Description: This picture was taken of some kid back in 1967 or maybe 1968. It was me with my very first rc sailplane called the Donnar, a rudder only design from Germany. In the background is the FAU campus. This picture was taken of some kid back in 1967-68. It was me with my first rudder only rc sailplane called the Donnar, a German built up kit. In the background is the FAU campus.

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Description: This picture was taken in about 2004, the same kid grown up 37 years later. This picture taken in about 2004 is of the same kid all grown up 37 years later. Happy Soaring!
Posted by Libelle201B | Nov 04, 2012 @ 09:27 PM | 3,547 Views
Here are some pictures of modern day FS airfoils. The first is an LS-8 and the second is an ASW-27. They are a bit more semi symetrical and a bit thinner than the older generation Wortmann's etc. These airfoils permit an L/D of about 30/1 or so at 70-80 knots, something the thicker and higher camber airfoils of past can't do.
Posted by Libelle201B | Feb 14, 2012 @ 05:10 PM | 3,652 Views
I designed the Slope Runt based on an all foamy design from the late 80's or so.
She is light, fast and very aerobatic. The span is about 42", length about 28". The airfoil is a TLAR with about 8% thickness, 1% camber, wing/stab decalage is 0-0. She has no bad habits and will slow down without an abrupt stall, even in the turns.
Posted by Libelle201B | Jan 20, 2012 @ 06:49 PM | 3,901 Views
I may be posting some soaring related comments on both r/c and full scale soon for those interested

Happy Soaring!