130" Kinetic
DP
the fastest R/C glider in the world...
The new 130" Kinetic DP
now flown to 513mph at Weldon
On October 25, 2010, the first 130” KineticDP Prototype became the third
fastest DS plane in the world at 403mph at Weldon, Ca on its maiden flight.
After playing with the numbers for a while, it became apparent that more speed
could be had from the Kinetic line of models by pushing up the aspect ratio and
wingloading on the Kinetic 100DP. The only question was how far I could go and
what it would take to get it there? I decided to stretch the span to 130" while
keeping the root chord as is. This was accomplished by replacing the original
40" center panel with an all new molded 70" center panel. All of other parts are
shared with the original 100". The tail volumes on the 100" were slightly
generous to start with and the 130" stretch is about as far as I think I can go
without having to make another fuselage mold with a larger vert stab. The result
is an AR of 17.5:1 which combined with an increased wing loading should be
capable of 10-20% higher speeds for a given windspeed! My goal with this plane
is to do more with less, such that the detriment of mach effect will be delayed
beyond the 500mph barrier. I can't wait to get some wind to test things out!
The flaps are full span being driven by (4) MKS HV747 servos with the
help of a JR matchbox. The flap servos have been dramatically improved with the
external bearing modification described in another thread. The result is
completely rock solid with NO flex or play whatsoever!
I'll be making these center panels available for any Kinetic owner to buy, or
purchase the complete plane, price pending depending on layup.
Setup
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Trim the 130" KineticDP so that the elevator is neutral in normal level flight. The flaps and ailerons should be trimmed flush for hands off flight and using snapflap, the flaps and ailerons should move down with up elevator by approx 4 degrees ( 0.125"(3.2mm) measured at flap root edges) at max elevator. For Crow, program 0.08" (2mm) up Ailerons, 75-80deg down Flaps, and 0.09" (2.3mm) down elevator. Keep in mind that this will vary with CG…
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Control Horn Measurements
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Hole to Skin Distance
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aileron
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.inch" (xxxmm)
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Locate leading edge of horn .5mm behind hingeline
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flap
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inch" (xxxmm)
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inch" (xxxmm) behind hingeline
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elevator
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inch" (xxxmm)
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inch" (xxxmm) behind intersection of wiper and elevator skin
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***
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Make the servo arm length 7mm for ailerons and 10mm for flaps.
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***
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Angle the flap servo arm roughly 40degrees forward so flaps are partially locked out.
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***
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Set aileron servo horn roughly 35degrees aft so that it is square (90deg) to the pushrod at neutral trim.
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Recommended Surface Deflections
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Landing
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Dynamic Soaring
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Up
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Down
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Up
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Down
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aileron
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.315" (8mm)
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.315" (8mm)
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.083" (2.1mm)
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.071" (1.8mm)
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flap
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70-90deg
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elevator
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.118" (3mm)
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.177" (4.5mm)
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.108" (2.75mm)
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.108" (2.75mm)
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Recommended Gear
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Ailerons:
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MKS HV9767
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Flaps:
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Four MKS HV747
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Elevator:
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MKS HV747 in tail
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Battery:
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2s Li-Ion LG MJ-1 3500mah
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Center of Gravity:
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3.0" (7.62cm) from center panel root LE
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