Although the military did not move to phosphate ester type fluids they did identify the need for a more fire resistant fluid as a direct replacement for MIL-H-5606. As a result a synthetic

Hello Gary, I have trouble understanding how the vortices oppose each other. Are we talking about one side of the aircraft? I'm pretty sure the tip vortex of (say) the left wings rotate in the

Can someone tell me the difference between mil 5606 H and 5606A brake fluid? Can the “H” version be used in our brake systems? Jim N46JP -Q200

Thanks Jerry, that's a kind offer, but probably cheaper to ship a finished one over. Looks like Jeff may have the answer, I will drop Craig a line.  Thanks all.

Good points, Gary. That positive stagger Q would be about as attractive as the “Flying Flea”! But, you could make a trike with the main gear on the wingtips and a retractable nose wheel, that

Hi Jay, That is interesting although not the paper I was referring to so on first reading 2 things of note spring out. 1. Negative stagger was found to produce lower drag in cruise flight. Great for

Hi Gary and Rob, Here is a paper that addresses the subject under discussion experimentally by varying stagger, decalage, etc. In case the attachment does not make it, here is the reference

Hey Gary, Thank you for clearing that up. Happy New Year and a wish for good flying for you this year. Jim N46JP -Q200

Correction woops!, birds flap in same direction and at same timing to allow tip vortices to unwind each other due to stagger. Gary

Hi Rob, Yes they oppose each other but only if there is sufficient stagger with close enough proximity of each tip. I think the paper actually specified the Q layout near as damn it, as in rear wing

Hello Gary, Thanks for the details! I understand the part of optimum weight distribution to achieve minimum induced drag. But will the tip vortices cancel out? I would rather think they would combine

Hi Jim, No, the mainwing could only ever get blanked by the canard if it has already started to enter a tailslide. At the point of convincing myself the rear wing could tip stall during violent roll

Hey Jeff how is that Dragonfly of yours doing? Richard Fast Little Airplanes

Hello Rich. I recently purchased a Carbon fiber spinner from Craig Catto Proppellers. It goes beautifully with my Carbon fiber Prince propeller for my Dragonfly. Good luck. Jeff

I have a form from which I made mine. You could use it but shipping may be prohibitive. Jerry

Try Van’s aircraft.

Guys, Happy New Year to you all. I need to get a spinner sorted for my TriQ200. I remember a discussion some time back, but has anyone recently bought one and if so what and where from. I tried

Hi Phil, Thinking of it more for a visual day light marker when flying in murky weather, rather than for night flying. Good to have a forward facing beacon to help fend off those coming your way.

Jay, I have been following your great progress! Phase 1 is a nerve wracking time with a new machine getting everything sorted. If I do not get the plane done next summer and out of there? In 2020