On the first flight Andy noticed a resonance sound from the canopy skirt at 100 kts so we put some felt temporarliy at the aft end of the skirt. On the second flight I observed with Andy the resonance at 130 kts - better but not resolved.
Tapping the skirt you could tell where the sound was being generated from. The down side of a good fitting skirt it would appear. Did some research on VAF and decied on this solution ....
Phil and I placed 20mm soft velcro tape along the entire edge of the skirt and a tapping check revealed no contact.
Awaiting Flight Test
Post Note - the velcro worked a treat - no drumming sound
