Finding unknown C/G
02-25-2022, 02:33 PM
#1
Finding unknown C/G
Is there an easy way to find an unknown C/G on a symmetrical double tapered flying wing?
I built this thing about fifty years ago, at the time I used a Cannon radio with a sliding "Brick" two servos and the RX in the cube or the coined term was a brick with the elevator
servo tied to a former in the fuse and the aileron servo and RX going along for the ride until needed.
Now with today's TX's we can setup elevons with two servos and a receiver.
I have no idea where the C/G should be on the six foot flying wing with double taper.
Is there an easy way to calculate where the C/G should be?
Thanks, Bob
I built this thing about fifty years ago, at the time I used a Cannon radio with a sliding "Brick" two servos and the RX in the cube or the coined term was a brick with the elevator
servo tied to a former in the fuse and the aileron servo and RX going along for the ride until needed.
Now with today's TX's we can setup elevons with two servos and a receiver.
I have no idea where the C/G should be on the six foot flying wing with double taper.
Is there an easy way to calculate where the C/G should be?
Thanks, Bob
02-27-2022, 12:21 PM
#4
Thanks A.J for the calculator where is the lead edge?
This flying wing has 9" of fuselage in front and a three-inch tapered section of fuse behind the trail edge of the elevons it has a swept back vertical stab.
The wing is swept back around 1.5" and swept forward around 2" About 14" cord at the root and 9" at the tip.
This flying wing has 9" of fuselage in front and a three-inch tapered section of fuse behind the trail edge of the elevons it has a swept back vertical stab.
The wing is swept back around 1.5" and swept forward around 2" About 14" cord at the root and 9" at the tip.
02-28-2022, 06:15 AM
#5
Thanks A.J for the calculator where is the lead edge?
This flying wing has 9" of fuselage in front and a three-inch tapered section of fuse behind the trail edge of the elevons it has a swept back vertical stab.
The wing is swept back around 1.5" and swept forward around 2" About 14" cord at the root and 9" at the tip.
This flying wing has 9" of fuselage in front and a three-inch tapered section of fuse behind the trail edge of the elevons it has a swept back vertical stab.
The wing is swept back around 1.5" and swept forward around 2" About 14" cord at the root and 9" at the tip.
02-28-2022, 11:08 AM
#6
The calculator shows a C/G point, after I put in some of my data, root cord 14", tip cord 9", wingspan 72" and sweep that was just a guess the wing sweeps back 2.5" the trail sweeps forward maybe 2.5" the C/G mark moved to another point on the wing, closer to an edge.
Since this is a flying wing, do I assume it moved closer to the trail edge?
Sorry for being so inquisitive but I'm so used to balancing from a point back from the lead edge,
Thanks, Bob
Since this is a flying wing, do I assume it moved closer to the trail edge?
Sorry for being so inquisitive but I'm so used to balancing from a point back from the lead edge,
Thanks, Bob
02-28-2022, 07:21 PM
#7
The cg distance listed on the right side of the calculator is from the leading edge at the center of the wing back to the cg symbol. If you project the horizontal line out to the wing tips the balance is on that line. The vertical line is the MAC length.
