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Whilst I'm trying to keep atop of the blog you may have noticed of late that there is less content appearing. For those of you that haven't realised, most of my work has now been moved over to where I'm working with Giorgio Piola.

I'm still doing the technical image gallery for each GP with the continued support of friend of the site Sutton Images. However, as always my time is limited and so this might not be updated as quickly as it once was, so keep checking back.

As some of you may have found out already I'm also working with the Missed Apex crew on their podcast from time-to-time, either doing race reviews or dedicated 'Tech Time' shows.

I've embedded the latest version of the podcast below and will update this a frequently as I appear. However, please head over to Itunes if you want it to appear in your player when episodes are available. The show is great to work on and has a great lineup of 'regulars' but has also enticed some bigger names recently too, with Will Buxton and Bradley Philpot on shows during the summer break.

2 Jun 2012

The FIA have now moved to define the floor used by Red Bull since China as illegal, having previously stated that the hole in the rear of the floor was indeed deemed as a slot.  Please see my previous post on the subject

Red Bull's previous results whilst using the floor will remain in place (Much to the concern of many F1 fans).  Had Ferrari or McLaren formally protested the floor post race (within the 2 hour limitation) both Mark Webber's and Sebastien Vettel's results could have been revoked.

So what does this mean for Red Bull?

In order to conform with the regulations Red Bull have 3 options, they can remove the design altogether and abandon the tyre squirt path (highly unlikely).  They could redesign the area entirely and follow a similar path to Sauber or Ferrari, making their slots run closer to outer floor edge.  Or lastly they could simply cut out a finite amount of the floor to make their current solution legal (The most likely scenario)

I've adjusted my picture/diagram below to show how Red Bull could achieve the latter.  They could either add a slot in a similar position to the Sauber version (shown in green) towards the edge of the floor.  Or they could detach the floor from the aero strake (shown in orange).  To make it a slot it doesn't even mean being able to see the gap in the floor, it could be as fine as a hair.

The reasons behind Red Bull's initial design are/were 2 fold, with the duct being so far across the floor the airflow will have a much bigger impact on the tyre squirt.  Secondly without the slot the area of floor remains much more rigid so isn't affected by additional force as speed increases which in turn affects the performance on tyre squirt reduction.

Whilst explaining Tyre Squirt to a fellow tweeter yesterday I drew the following caveman style pictures on my iphone however it may help you to visualize what tyre squirt is:

In Picture 1 (above) we look at the wheel/floor from above, the blue lines I drew depict the airflow passing toward the diffuser under the car.  The green area denotes the airflow coming across the top of the floor toward the tyre and tumbles / rotates off the tyre and 'squirts' laterally into the diffuser flow below.

In the second picture above we can see how the 'Tyre Squirt Duct' will help guide the flow and reduce the tyre squirt effect.

1 comment:

  1. Matt how did you produce the sketches in this article? Thanks


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