ianlaw121212
Member
I'm just about done building the airframe for a Wolf Boredom Fighter.
My next job is to assemble the completed parts and trial rig the wings. (There are a few photos in my "new members" post.)
The drawings specify streamlined wires, which are now likely to be way beyond my original budget, which has already shrunk a bit.(This is hearsay; I haven't had a quote so far.)
I would obviously prefer the streamlined version, for performance and appearance but am likely to have to use stranded cables - at least until I can afford the ideal.
Can anyone advise me how to calculate a minimum cable size and type? (My maths = very basic and memories of triangles and parallelograms of force etc. now beyond rusty.)
Looks like 1X19 in 5/32" might be suitable in either galvanised or stainless ( Aircraft Spruce ).
(Boredom Fighter basic details:
Airfoil NACA 4412, Span 20 feet, Chord 2 1/2 feet
Empty weight 473lbs, normal gross 730 lbs, Max gross 770 lbs,
Cruise 100mph ( but not with unstreamlined cables)vne 135mph stall (glide) 42 mph
Ultimate g load +9.1 -7.1
Pairs of single flying and landing wires (Both wings = 4 lift and 4 landing )
[Photo of a nice example I would like to emulate showing general layout:
Thanks for reading this far and look forward to some wise advice ( except for "cough up and buy some streamlined wires you old skinflint! )
Ian Law
My next job is to assemble the completed parts and trial rig the wings. (There are a few photos in my "new members" post.)
The drawings specify streamlined wires, which are now likely to be way beyond my original budget, which has already shrunk a bit.(This is hearsay; I haven't had a quote so far.)
I would obviously prefer the streamlined version, for performance and appearance but am likely to have to use stranded cables - at least until I can afford the ideal.
Can anyone advise me how to calculate a minimum cable size and type? (My maths = very basic and memories of triangles and parallelograms of force etc. now beyond rusty.)
Looks like 1X19 in 5/32" might be suitable in either galvanised or stainless ( Aircraft Spruce ).
(Boredom Fighter basic details:
Airfoil NACA 4412, Span 20 feet, Chord 2 1/2 feet
Empty weight 473lbs, normal gross 730 lbs, Max gross 770 lbs,
Cruise 100mph ( but not with unstreamlined cables)vne 135mph stall (glide) 42 mph
Ultimate g load +9.1 -7.1
Pairs of single flying and landing wires (Both wings = 4 lift and 4 landing )
[Photo of a nice example I would like to emulate showing general layout:
Thanks for reading this far and look forward to some wise advice ( except for "cough up and buy some streamlined wires you old skinflint! )
Ian Law
