John is correct 40 knots is within reach with a "Moth" specifically setup to sail in 20 knot winds, a 70 kg crew, extended wings and smaller...
David Doug Lord is partially correct re some work I have been doing, mainly concerned with dynamics of foilers. Performance estimates are of...
Doug I agree Tom's is correct in postulating improved contol using both a flap on the centreboard foil and an elevator on the rudder foil. The...
Most not all aircraft use elevator/tailplane controlled in pitch, nearly all yachts are steered with stern hung rudders, the dynamics are nearly...
Doug hinge lockup caused by wing bending is as old as flight. one approach is to make the full span flap in 4 pieces with small universal...
Tom /Doug Some further simulation runs show clearly that the light weight wand, low drag tip and spring combination is the best option I have...
Doug If you are finding "man in the loop" control difficult it is probable that you have a rudder foil that is too small in area compared to...
Doug Thank you for the response Your experience with the wands is consistent with my sums, the aerofoil section being very much low drag...
Doug yes I was aware of the shock cord on the moths but I think the wand comes out of the water before the foil does. Some math modelling I...
P.S. the wand needs to be heavy and low drag to keep it in the water at all time, once the the high drag profile wand is out of the water it will...
Tom I have the computational tools to go directly from the equations of motion to frequency domain and or root locus formats. However I can see...
See my post 8:36 yesterday. My math model as active flaps on both centre board and rudder foils. Gearing and trim combinations can considerable...
I have just completed a 3 degree of freedom (speed, height and pitch attitude) dynamic model which nominal represents the Fastacraft moth, foils...
Ian Sorry I missed you in Melbourne. I will let Tom answer your question from a theoretical position. The aircraft anaology may be miss...
Watching the top moth guys at the worlds, race 3, 8 knots of wind, They were climbing out with angle of a attack and flap on both main and rudder...
Doug Yes I agree, the actual numbers depend significantly on where the sums put the CofG and CP's. I believe you get the same performance ,...
Doug I accept that Ian Ward was a year ahead of the work we did in getting the Int14 up on foils an will ammend my furture claim statements...
History Wardi Firstly I agree re your comments on "flying high" just clear of the waves is better than higher. It is a matter of looking at...
foil development history Doug I would be interested to chat to the foil pioneers that said "it could not be done" three years ago. It is now...
Doug I have heard rumours and we may be seeing the birth of a new class of dinghy. Can you help in tracking these potential fliers. I would be...
