One of the biggest issues ..... actually getting the bugger up on the roof!
" so your front aerofoil to divert the air over the top is a good idea I'd say
Wouldn’t the panel have to be wing shaped to get a lifting effect?I haven't read the whole thread, forgive me...
However, doesn't diverting the air up over the panels create lower pressure above than below and therefore lift?
No running more air on one side creates more pressure on that side.I haven't read the whole thread, forgive me...
However, doesn't diverting the air up over the panels create lower pressure above than below and therefore lift?
No try securing an 8X4 plywood sheet on a roof rack.Wouldn’t the panel have to be wing shaped to get a lifting effect?
No running more air on one side creates more pressure on that side.
So if there is more air over the top of the panel this would put downward pressure on the panel.
No try securing an 8X4 plywood sheet on a roof rack.
If the air flow is greater under the plywood it will create lift, if above as I have mentioned it will create downward pressure.
A wing achieves lift by angling it into the wind so that the bottom of the wing achieves more air flow than the top generating lift.
A wing actually creates lift by having a flatter bottom than the top, the top is bulged upward. The air has to travel faster over the longer distance along the curved top thus spreading the air out and this reduces air pressure over the wing and hence lift.A wing achieves lift by angling it into the wind so that the bottom of the wing achieves more air flow than the top generating lift.
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EDIT, Steve just beat me to it by about 10 seconds!!
No not if the leading edge was up a tad or air deflected over it which creats suction/lift.Wouldn’t the panel have to be wing shaped to get a lifting effect?
New thinking says it gets thinner over the top of the wing which creates a suction effect and lifts the wing, the thick heavy air under it then pushes up to help, the pressure differance on a jumbo jet is equel to a baby sucking on a straw which makes a wing more efficent thus saving fuel.A wing actually creates lift by having a flatter bottom than the top, the top is bulged upward. The air has to travel faster over the longer distance along the curved top thus spreading the air out and this reduces air pressure over the wing and hence lift.
I remember being at an aero modelling talk when I was about 12 and this was explained and I've never forgotten it, later in the seminar the guy giving the talk said "Right, we're now going to cover 'Drag' and asked does anyone know what drag is" A guy put his hand up and said "Yes, it's a bloke dressed as a woman"! Well I was only 12 and couldn't understand why everyone was in hysterics.
EDIT, Steve just beat me to it by about 10 seconds!!
Notice any difference in anything?I use a bit of plastic board and sikafexed it on .
New thinking says it gets thinner over the top of the wing which creates a suction effect and lifts the wing, the thick heavy air under it then pushes up to help, the pressure differance on a jumbo jet is equel to a baby sucking on a straw which makes a wing more efficent thus saving fuel.
I know you will sort it all out, good luck and get stuck in, no slipping of to the pub, we will all be keeping an eye on you.Gosh! I hadn't thought of that when figuring out wind deflection over my solar panels Trev.
How silly of me!
I know you will sort it all out, good luck and get stuck in, no slipping of to the pub, we will all be keeping an eye on you.![]()