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Climatic Wind Tunnel (CWT Two)

Truck in cwt2

We have the UK’s only large vehicle full-scale climatic wind tunnel. The facility provides state-of-the-art simulation of environmental conditions for product development across all world markets.

Our CWT Two facility is now hydrogen capable having been fitted with new detection, ventilation, and integrated control systems. This facility can now accept fully fuelled hydrogen vehicles with no limit on the amount of hydrogen that can be on board.

Climatic Wind Tunnel Two Tank

Using our experience and facilities, customers are able to compress their development lead times and minimise their costs to deliver right-first-time products to market ahead of their competitors.

The facility is specifically designed with a large test chamber to accommodate vehicles and products from the automotive, off-highway, military and aerospace sectors.

It can simulate a wide range of environmental conditions from -30ºC to +50ºC with the added advantages of solar simulation, humidity control and a two wheel drive chassis dynamometer.

The facility allows our customers to do everything they could do with in-territory testing but with the added advantages of guaranteed, repeatable conditions and lower overall costs.

CWT2f 1

We offer the following tests in this facility:

  • Defrost/Demist
  • SC03
  • FTTP (Fuel Tank Temperature Profile)
  • ATCT (Ambient Temperature Corrected Test)
  • UDDS (Urban Dynamometer Driving Schedule)
  • WLTP (Worldwide Harmonised Light Vehicle Test Procedure)
  • Snow Packing
  • HVAC Performance
  • AC Pulldown
  • Cold Start
  • Motorcycle Lugging & High Speed
  • EV Range
  • Driven Rain

Climatic Wind Tunnel (CWT Two) Specifications



Max vehicle dimension

Width: 8.0m, Height: 6.0m, Length: 19.5m

Gross vehicle weight

62 tonnes

Air speeds

1.4m² nozzle = 180kph 2.5m², nozzle = 120kph 5.0m², nozzle = 70kph

Air temperature

Max/min = +50°C/-30°C

Chassis dynamometer

Single-axle (600kW total power, 55kN tractive effort), 48” dia. rollers

Humidity range

5% to 95% Relative Humidity

Solar simulation

Quartz halogen, visible and IR, Range: 0.6 to 1.2kW/m², Target area: 2.5m x 6.0m

Data acquisition

124 channels, up to 10Hz scan rates

Circuit type

Horizontal, fully enclosed within support building

Fan type

Axial flow, 310kW

Cooling systems

1.1MW capacity at 20°C