9 replies to this topic

[BiggestBuddyLazierFan]

I noticed that Jordan had rather small radiator openings snd their sidepods are almost completely sealed

How those radiators got enough air?

[PlatenGlass]

Through the nose:

 

[F1matt]

The 195 was a good looking car despite the awful paint job, didn't they also become a works team in 1995 with Peugeot so maybe they had some input with the car design as well? I am sure there was a big rule change in 1995? 

[Rob G]

The inlets were very narrow, but they were also very tall, and that height meant that very little was obscured by the wings.

[MoebiusPT]

Those vertical inlets were more or less kept the same in the J196, albeit supplemented with 2 additional entries further back in the sidepods.

 

So either the flow intake was less than optimal or there was some re-organization in the internal layout of the radiators and/or other equipment's that required additional cooling to work.

[Nigel Beresford]

Average flow velocity in a racing car rad duct on the inlet side is shockingly low in comparison with the free stream velocity - the air tends to overflow the inlet like water pouring into a full bucket. This is why one alters the cooling performance by adjusting the radiator duct exit area on the downstream. In doing so one changes the pressure drop across the core and therefore the airflow rate.

[kayemod]

Average flow velocity in a racing car rad duct on the inlet side is shockingly low in comparison with the free stream velocity - the air tends to overflow the inlet like water pouring into a full bucket. This is why one alters the cooling performance by adjusting the radiator duct exit area on the downstream. In doing so one changes the pressure drop across the core and therefore the airflow rate.

 

 

All true, and this is known as the Meredith Effect, a principle first exploited and publicised on the Supermarine Spitfire prototype way back in 1936, effective cooling with a minimal drag penalty.

[Zoe]

Isn't that similar to the radiator on the P51 which is said to actually have generated thrust? A concept that I never understood...

[Peat]

 https://podcasts.app...i=1000498065496

31m30 into this podcast, Gary Anderson explains the concept

[kayemod]

Isn't that similar to the radiator on the P51 which is said to actually have generated thrust? A concept that I never understood...

 

Yes, very similar, but the Hawker Hurricane used a similar principle even before the Spitfire. Both planes, and the Mustang P51D were Merlin powered, so it's possible that Rolls Royce had some early involvement as well.