stanislavz
Well-Known Member
Just read this article :
https://generalaviationnews.com/2018/05/24/belite-adds-metal-wing-option-of-chipper-cuts-build-time/
WICHITA – The Chipper STOL, a two-place experimental amateur-built aircraft kit from Belite Enterprises, now has a metal wing option for $1,320 and 15 extra pounds.
According to company officials, the metal wing option reduces build time and drag and improves performance.
Wings have 113 square feet area or 10.5 m2 Minus 1.5 of fuselage area - 9m2 pf wing area or 18m2 total for cowering, or 18 x 0.8 14.4 m2 of metal skin, excluding control surfaces ?
And - 6.8 kg / 18m2 = 0.3777 kg/m2 or 0.14mm of aluminimum foil ?
Or 6.8/14.4 = 0.472 kg/m2 = 0.172mm of aluminium foil.
But - original fabric also weight, according to my math - no more than 0.4 kg/m2 / or 0.15 mm of aluminium foil..
So - adding this will yield ~ 0.3-0.32mm of skin..
Do my numbers looks right ?
https://generalaviationnews.com/2018/05/24/belite-adds-metal-wing-option-of-chipper-cuts-build-time/
WICHITA – The Chipper STOL, a two-place experimental amateur-built aircraft kit from Belite Enterprises, now has a metal wing option for $1,320 and 15 extra pounds.
According to company officials, the metal wing option reduces build time and drag and improves performance.
Wings have 113 square feet area or 10.5 m2 Minus 1.5 of fuselage area - 9m2 pf wing area or 18m2 total for cowering, or 18 x 0.8 14.4 m2 of metal skin, excluding control surfaces ?
And - 6.8 kg / 18m2 = 0.3777 kg/m2 or 0.14mm of aluminimum foil ?
Or 6.8/14.4 = 0.472 kg/m2 = 0.172mm of aluminium foil.
But - original fabric also weight, according to my math - no more than 0.4 kg/m2 / or 0.15 mm of aluminium foil..
So - adding this will yield ~ 0.3-0.32mm of skin..
Do my numbers looks right ?