EGAR .
If you put a line at 45 Deg. ea. way , intersecting the front at 45 deg.
you wouldnt miss much , or add much infill to fill the point in front .
A folded cardboard or styrene taped on for air tests'd prove something . One way or another .
Just dont deck it .
Looks like the C G'd be back amost near the 3rrd mark . 30% . BUT , Flaps'd make it about 2 wider , plus the bit where the backs cut so its not as wide . Unless the flaps are as thin as paper .
3/12ths then is 25 % . But we said ALMOST . so 22 or 23 % . Or 20 - 25 % . Fairly Normal . THOUGH any area FORWARD of the C.G. , one would think , Is force Fwd of inertia , so enhances
the turn . Whereas if its aft its countering it and is counter countered
by the elevators . Unless its a Canard .
SORRY .
But we think the aftish high point may / can give more stable center of lift , resitance ( drag Cr. in turn ) and low adhesion .
The Folkerts uses a Werwage airfoil . Said to be a wind man . Larger version with rounded L E needed larger empenage ,
To get ' The Groove ' , and spo turns clean . Eliminate the corrections for track .
AIRFOIL .
Airfoil , Yellow one , pirated from here Via Xerox . Miller said He borrowed the Arees section . HOWEVER -> to The Eye its % percentages , poportionately , look comparable to yours .
As in ones say 10% ( of size ) fatter or thinnner , tho the entry - front - L E might not be identical .
Is the assumption that the resistance at the front edge of a blunt nose section requires a C G more forward . TEST a foam or shaped thin to tack on fwd to evaluate turn & exit . With Std. (tail) weight variation .
say 4 or 5 ,
To find where it gets dull & where it gets snappy . General Parameters NOT fine tuning . As in , start 0 rear weight -> as there added if its gotten ugly you woulnt try for more ugly -> C G rear Max .
This had the thrift airfoil . Told the yatsenkos are set up hair trigger to turn . This'd handle a gale . But flew daily NZ around 2002 , so the driver wasnt all dull & awkward . One learns to fly, in wind, in N Z .
SNAARRRL.
The L E was just smoothed 1/2 or 3/8 Sq , on edge . As we said , It'd ROTATE on full handle , Triangle corners . No sink & exit clean ( for theconditions . one doest see EXACT laser acurateness . But Close )
The flow might break away , but still supported under . Woosh Noise ! . Still going Fwd so result is tight turn rather than changeing direction in three inchs .
Pity I didnt build it 76 or so , as planned . Will give a clean patter in smooth 20 - 30 knot . And flown in 40 . Not for amatures . A good combat pilot'd like it .