Vodafone McLaren MP4-27 Mercedes

[GrizzleBoy]

Is that black piping on the inside of the right endplate going down to the beam wing?

Edit: from other angles it seems they have black cables taped down with black tape on the beam wing so it's probably cabling.

[Huntresa]

I think they're tested the double DRS Look at the rear wing endplate. It's so much wider.

You do realize there is no space for a hole? I mean where the hole should be there is fins.

[ianwit]

You do realize there is no space for a hole? I mean where the hole should be there is fins.

Agreed, no room for intake hole.

[beelsebob]

The hole could be placed on the main plane of the wing, behind the DRS flap. Though I doubt it is.

[Huntresa]

The hole could be placed on the main plane of the wing, behind the DRS flap. Though I doubt it is.

Also prob to small a hole. The wing they are running ha very small upper flap that opens and it barely overlaps to thw main plane.

[KeiKo403]

I think they're tested the double DRS Look at the rear wing endplate. It's so much wider.

New wheelnut design???

[SiLo]

looks like slots here ....the tarmac is visible



http://www.formule1.nl/media/uploads/me ... 040.66.jpg

Either that, or they are gurneys? Can't really tell. Would it be possible that it is one slot that come back on itself, from the edge of the diffuser?

[Owen.C93]

Looks like the normal cables We see on testing days. Nothing looks like tarmac. Mclaren team members got 3 hours sleep last night, no new parts visible so what have they been up to?!

[ianwit]

Either that, or they are gurneys? Can't really tell. Would it be possible that it is one slot that come back on itself, from the edge of the diffuser?

Yes they're gurneys what looks like gravel through a slot is rain drops in front of the gurney I reckon.

[hardingfv32]

Why bother with with the end plate above the main element? Is it requiered by the rules?

Why doesn't the end plate seal the bottom of the second element/flap? I though that an end plate on the low pressure side of a wing was always a benefit.

Brian

[beelsebob]

Why bother with with the end plate above the main element? Is it requiered by the rules?

Why doesn't the end plate seal the bottom of the second element/flap? I though that an end plate on the low pressure side of a wing was always a benefit.

IANAA, but... my bet would be that the luvres encourage the air flow out of the side of the wing to be upwards, and create an extension of the wing to the sides, wheras if you had no end plate air would spill off the high preasure side of the wing sideways (rather than upwards and sideways).

[GrizzleBoy]

There are no gurneys of slots in the floor, it's cabling for their sensors being run on the floor and covered with black tape.

[hardingfv32]

my bet would be that the luvres encourage the air flow out of the side of the wing to be upwards, and create an extension of the wing to the sides, wheras if you had no end plate air would spill off the high preasure side of the wing sideways (rather than upwards and sideways).

Not a bad thought. May I assume that these louvers in all cases provide less downforce or is there a chance of a net gain ASSUMING that the AoA is the same?

I appreciate that the louver might allow for higher AoA.

Brian

[Just_a_fan]

Why bother with with the end plate above the main element? Is it requiered by the rules?

Why doesn't the end plate seal the bottom of the second element/flap? I though that an end plate on the low pressure side of a wing was always a benefit.

Brian

The endplates increase the downforce produced by the wing by effectively fooling the system in to thinking the wing is longer than it is. This is because the inevitable vortex produced at the wing tip reduce the downforce of the wing. It, in effect, makes the wing behave as if it were a shorter span. The endplates reverse this effect and so mean the wing produces more of its theoretical lift. We see these on airliners too in the form of vertical wingtips.

Unfortunately, the whole rear wing system still produces a big vortex at each end which creates big drag. So the teams use the louvres and the cut out behind the flap to reduce these large vortices. This will reduce the downforce but it improves the overall efficiency of the system. It's about efficiency. A more efficient system gives the teams more options.

[beelsebob]

Why bother with with the end plate above the main element? Is it requiered by the rules?

Why doesn't the end plate seal the bottom of the second element/flap? I though that an end plate on the low pressure side of a wing was always a benefit.

Brian

The endplates increase the downforce produced by the wing by effectively fooling the system in to thinking the wing is longer than it is. This is because the inevitable vortex produced at the wing tip reduce the downforce of the wing. It, in effect, makes the wing behave as if it were a shorter span. The endplates reverse this effect and so mean the wing produces more of its theoretical lift. We see these on airliners too in the form of vertical wingtips.

Unfortunately, the whole rear wing system still produces a big vortex at each end which creates big drag. So the teams use the louvres and the cut out behind the flap to reduce these large vortices. This will reduce the downforce but it improves the overall efficiency of the system. It's about efficiency. A more efficient system gives the teams more options.

This is what Brian was referring to re the low pressure side of the wing though. The typical method of destroying the vortex is to put a vertical segment *on the low pressure side*. Hence why airliners have wing tips that point upwards.