-- Original Message -- ones previously So get rid of much of that drag; it need be only relative to a big, even faired bump on the fuselage bottom, and stowed outriggers but in a place where some win
four tanks that the I got that part, but I was just trying to restate "trigear burns more gas" to simple math. Assuming all were same engine/prop combination, at 75%, all will burn same gas. Well, i
A rectangular section is actually worse than a flat plate, but the ellipse formed by the round, gear leg is very draggy too. If it works out to 2/1 effective ratio (thickness/chord), Hoerner sez dra
I was the one suggesting laminar flow wheel pants. A theoretical, laminar-flow shape is not fully rounded at the front, but more pointy as on the Europa wing. It's fattest part is around 40-50% back
A definitive answer is either a) better; b) worse, or c) no change. :-) It actually may be possible that interference drag is increased, if you have a gear leg fairing. What I did is make an aerodyn
I would be inclined to not bet on that. Hoerner's big old book is a quick reference here. An angled, round gear leg has a drag coefficient around .85, as an effective elliptical shape. A streamline
have That proposition sounds good to me, meaning not a whole heck of a lot! But once at Oshkosh, I asked Kim Prout why he didn't do that, and he's said to be progeny of an actual aerodynamicist. He
Hoerner doesn't suggest laminar flow techniques as relevant for small airfoil sections, like struts, or gear leg or similar small fairings. Classic airfoil shape OK. Not that I understand it all eit
the ability of that the bypassing it gets heated up class many years ago You want black, not white. Quantum theory, Kichoff's laws, good absorbers (black) are good radiators (shedding heat of the ho
We may not be able to afford these engines. They can't charge the military one price, and us about half of that. Our Defense Contract Audit Agency tends to raise an issue there. Perhaps that's why t
If one wishes to avoid the vagaries of capacitance senders, I found that a mechanical sender works well enough. I drew the outline of half the tank (looking from the front) on paper, marking gallons
Ferg, just why y'all tryin' to use the proper length AN bolts as a freakin' installation tool? ;-) Just go to the hardware store and buy a long length of 5/16" threaded rod, and 5/16 nuts. Cut said r
My attempt to soften Redux, after it had cured a couple weeks, was too a failure. Too much heat required, verses heat to damage the glass structure, which conducts heat poorly to get at the green stu
I guess you mean tensile strength of the tape + resin, not the whole structure, but I'd a guessed more than 30. However, there's stresses --From several directions here -- up/down in Gs, aft in drag,
An awful long time ago, cars had a foot switch for the starter. Wild suggestion or not, how you jury-rigged this wouldn't matter, as it would be out of sight. Making your plane virtually theft-proof.
batt Yes. The "L" terminal is either open (call it infinite resistance; system nominally working) or at ground -- lamp lit, not working. There's a transistor switch in there to accomplish that, and v
An aircraft battery relay draws 1A or a bit less, dissipating about 15W, so a device that big shouldn't get hot. A 50W resistor is about the size of our little finger. I tried a latching relay, which
then? of that type. Circuit schematic suggests to me it is a shunt, bit not of classic variety. It appears it has to dissipate heat either no-load or high-load, for different reasons, but high-load l
appears the output. As you whatever the load. If the TO-220 case semiconductor pair are SCRs, then in that circuit "abuse" would be proportional to load. It still has to shunt in proprtion to lighter
The delay is because a capcitor has to first discharge internally; grounding won't do that.. Thus correct, because of that blcking diode. What grounding will do is prevent spurious noise from trigger