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Calibration Facility C-4

RI-181
Additional Facility
Infrastructure
Description

The C-4 facility is made of a vertical axis jet and used to calibrate pneumatic and fast response directional probes up to the transonic domain. It is installed next to the C-3 blowdown cascade facility, and benefits from the same 40 bar air supply system. The air coming from this high pressure air reservoir enters into a settling chamber through a perforated cylinder. Several grids are installed in this section to control and guarantee the uniformity of the flow and the turbulence. The calibration nozzle is characterized by a contraction ratio equal to 14.75 and presents an outlet diameter equal to 50 mm, allowing a stable operation, even at high Mach numbers. Large mass flows can be maintained during significant times (up to a few minutes). Three different computerized carriages allow running a detailed angular (yaw and pitch) calibration. The accuracy quoted in the angle calibration is better than +/- 0.5 deg.

Main technical characteristics

Calibration Nozzle Contraction Ratio: 14.75

Outlet Diameter: 50 mm

Number of Different Computerized Carriages: 3

Accuracy in the angle calibration: +/-0.5 deg.

Contact Information

Christophe Schram

Christophe.schram@vki.ac.be

www.vki.ac.be
(Belgium)
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