Just browsed through the manual of Aeriane's Swift-Light, and found something, that seems strange: Stall speed at MTOW (158 kg) is supposed to be 32 km/h for 20° flaps and 37 km/h for a clean configuration.
At 12.5 m² wing area this would translate into a Clmax of about 2.56 for the flapped and 1.91 for the clean configuration.
These values seem way to high for a tailless wing. OTOH Swifts are being footlaunched safely at low to nil-wind conditions, which makes me wonder how fast the average hangglider pilot can run safely on launching.
What do you think:
Is the Swift-light even with its outdate airfoil section and (relatively) low A/R able to reach stall speed as low,
or
are pilots able to run faster, than I'd have thought (after all the run downhill and after a few steps they don't carry any weight, after a few more not even their own.
At 12.5 m² wing area this would translate into a Clmax of about 2.56 for the flapped and 1.91 for the clean configuration.
These values seem way to high for a tailless wing. OTOH Swifts are being footlaunched safely at low to nil-wind conditions, which makes me wonder how fast the average hangglider pilot can run safely on launching.
What do you think:
Is the Swift-light even with its outdate airfoil section and (relatively) low A/R able to reach stall speed as low,
or
are pilots able to run faster, than I'd have thought (after all the run downhill and after a few steps they don't carry any weight, after a few more not even their own.
