Brawn BGP001 aero-mech development in 2009

[Callum]

This could be a stupid question - so don't shout at me!

Wouldn't 'outisde' air being forced into the diffuser increase the mass volume through it and help pull more air through?

- dont shout

[PNSD]

I think thats one of the main points about it. Mass air flow.

[zed.inc]

Mass volume? Now I am confused. These are two quantities that are related but different. Could you reword your question?

[bar555]

GP MALAYSIA


1.Exhausts


FRONT WING - MALAYSIA

Similar to Australia






REAR WING - MALAYSIA

Similar to Australia

[Callum]

This could be a stupid question - so don't shout at me!

Wouldn't 'outisde' air being forced into the diffuser increase the mass volume through it and help pull more air through?

- dont shout

What i meant was getting the most amount of air through at the back of the car.

but yes, i was mixing my terms up a bit!

[bar555]

NOSE SPOILER


There is a small spoiler on each side of the nose cone




TURNING VANES - MALAYSIA




SIDEPOD COMPARISON
Brawn’s sidepods are really very sculpted . The following comparison reveals how . Notice how boxy are BMW sidepods whick uses KERS and the KER system requires extra cooling .






EXHAUSTS - MALAYSIA


Modified exhaust pipes

[zed.inc]

This could be a stupid question - so don't shout at me!

Wouldn't 'outisde' air being forced into the diffuser increase the mass volume through it and help pull more air through?

- dont shout

What i meant was getting the most amount of air through at the back of the car.

but yes, i was mixing my terms up a bit!

Here's my assessment of the situation. By conservation of momentum of a single-inlet, single-outlet system:



This is the additional thrust provided by the velocity change of air through the diffuser. Increasing mass flow rate may or may not impact the amount of thrust generated by the diffuser.

Assuming constant mass flow rate, yes. But it's not that simple in the real world.

[bar555]

DIFFUSER - MALAYSIA

Similar to Australia



ENGINE COVER


The engine cover features a very thin extension with a V pointed end






REAR LIGHT - MALAYSIA

Unchanged



BRAKES FRONT - MALAYSIA





FRONT SUSPENSION DETAILS


1.Pushrod
2.Upper wishbones
3.Lower wishbones
4.Steering arm





FRONT WHEEL RIM SHIELDS - MALAYSIA

Similar to Australia



REAR WHEEL RIM SHIELDS - MALAYSIA
Similar to Australia

[bar555]

GP CHINA



1.New sponsor – MIG
2.No rear wheel rim sheilds
3.Asymmetric exhausts






FRONT WING - CHINA





REAR WING - CHINA







NEW SPONSOR - CHINA


The sudden and remarkable success of the team ( 2 wins in a row ) attracted a new sponsor . The logo of M I G Investments was placed on the front wing and nose

[bar555]

EXHAUSTS - CHINA









DIFFUSER - CHINA

No change



FRONT BRAKES - CHINA





FRONT WHEEL RIM SHIELDS - CHINA

No change




REAR WHEEL RIM SHIELDS - CHINA


Rear wheel rim shields were not used during wet race but only during the dry free practice sessions

[Conceptual]

Any idea why Jenson used the rear rim shields in China and Bahrain, but Reubens did not at either race?

[bar555]

Any idea why Jenson used the rear rim shields in China and Bahrain, but Reubens did not at either race?

Both Button and Barrichello had their rear wheel rim shields removed in China . Also in Bahrain the sheilds were refitted back in both cars .


I believe the reason why the shields were removed during Sunday race in China was the wet race conditions . Rain neutralized any aerodynamic gain coming out of them and consequently there was no need to carry them as a burden .

[bar555]

GP BAHRAIN


1.New VIRGIN logo
2.Rear wheel rim shields
3.Slightly different front wing



SPONSORS




FRONT WING - BAHRAIN





REAR WING - BAHRAIN

[bar555]

EXHAUSTS - BAHRAIN

Unchanged



DIFFUSER - BAHRAIN

Unchanged



STEERING WHEEL - BAHRAIN


1.Neutral ( green ) and BPF ( black) buttons had their positions mutually changed on the steering wheel
2.Pit Control ( grey ) and Pit Limiter ( yellow ) buttons had their positions mutually changed on the steering wheel
3.BBAL button had its color changed from purple to red
4.StartLight button had its color changed from white to grey
5. OT and RS button options were added

[Conceptual]

Any idea why Jenson used the rear rim shields in China and Bahrain, but Reubens did not at either race?

Both Button and Barrichello had their rear wheel rim shields removed in China . Also in Bahrain the sheilds were refitted back in both cars .


I believe the reason why the shields were removed during Sunday race in China was the wet race conditions . Rain neutralized any aerodynamic gain coming out of them and consequently there was no need to carry them as a burden .

So they took the rear shields off for a stint, and then put them back on?

I have both races downloaded, but casually re-watch them while doing some other stuff. I was pretty sure that I saw that Reubens did not have them for either race, but Jenson did... But them your pic comparison shows Jenson in the wet without them in China.

maybe I'll spend some time checking it out.