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Multimatic Motorsports Takes Aerodynamic Development To The Next Level

September 2, 2022
in Driver and Team Releases
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BRACKLEY, UK – Multimatic Motorsports has completed an initial aerodynamic evaluation test at Catesby Tunnel, a newly-opened aerodynamic testing facility, owned by ARP (Aero Research Partners). It is the first facility of its kind in the UK and only the second in the world.

In order to perform a full correlation check, the team ran its Mazda DPi race car through the tunnel at speeds of up to 120mph, comparing the results to a comprehensive set of data previously gathered from 40% scale and full-size wind tunnel testing, as well as Computational Fluid Dynamics development and five years of competition in IMSA’s top level championship. Initial results indicate a high level of correlation to that existing performance data.

The Catesby facility began its life as a dual rail Victorian railway tunnel, with the first steam locomotives running through it in July 1898. The tunnel still carries vestiges of soot from the coal burning trains, which has stuck to many of the approximately 30 million bricks that were required to construct the perfectly straight 2.7 km long tunnel, boasting a massive cross-section, 8.2m wide and 7.8m high. It closed to trains in 1966 and now a multi-million-pound transformation has turned Catesby into a state-of-the-art aerodynamic vehicle testing facility.

Catesby Tunnel turns the traditional practice of using a wind tunnel on its head, as Multimatic Motorsports boss, Larry Holt, explains:

“Compared to conventional wind tunnels, this is better because it’s real,” said Holt. “In a moving ground plane wind tunnel, the car is stationary and the wind is blown over it by a massive fan and flow conditioning set-up, and a belt is arranged to move under the car at a coordinated speed. It’s a very sophisticated configuration but the car is still stationary and that constitutes the not totally real piece. What Catesby facilitates is the measurement of the aerodynamic performance of a vehicle actually moving through the real world.”

“The problem with a car moving through the real world is that it is subjected to influences like gusting wind, rain and other changing environmental conditions that effect air density; all of the variables that come with testing in the real world. Catesby provides the real world without the weather. You have a moving car, a real road surface, a controlled environment and we can run 24 hours a day, whatever the season. It is a perfect 2.7kms of controlled atmosphere. That’s the kind of consistency you need when you are chasing incremental gains.”

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Multimatic driver, Andy Priaulx, was behind the wheel of the Mazda RT24-P throughout the test and he commented:

“When you’ve been a racing driver for as long as I have, you don’t often get to experience anything new,” said Priaulx. “When it comes to pure aerodynamic testing, I’m used to engineers studying static car models in wind tunnels with no involvement from the drivers. At the start it felt a little odd to jump into a race car and drive flat out through a 2.7 km tunnel, but the team assured me that the end was very clearly marked! Catesby Tunnel is an incredible facility and it doesn’t surprise me at all to know that Multimatic chose to be an early adopter and primary client of the facility.”

Located just a few miles from Daventry in rural Northamptonshire, Catesby Tunnel, is situated in the UK’s Motorsport Valley and just a short drive from Multimatic Motorsports’ UK headquarters in Brackley. Holt understood the advantage of the tunnel before it was completed and has locked down a significant amount of Catesby’s available tunnel time for development of future race, road and the incredible track-day cars created by Multimatic Special Vehicle Operations.

From: Multimatic Motorsports Communications

Tags: aero testingaerodynamicsCatesby TunnelmultimaticMultimatic MotorsportsMultimatic Special Vehicle OperationsracingWind Tunnel
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