Multi-Hole Probes for Full Three-Dimensional Flow Measurement
Multi-hole probes use five pressure measurement ports arranged around the probe tip to resolve the full three-dimensional flow vector. From these measurements, total pressure, static pressure, and flow direction in both yaw and pitch can be accurately determined, even in highly three-dimensional flows.
Probes can be supplied with or without an integrated static ring. In certain flow conditions this improves static pressure accuracy in cases with low pressure and velocity gradients, for example on the front of an aircraft or UAV.
Precision Multi-Hole Probes Manufactured and Individually Calibrated
Used across a wide range of applications including VTOL aircraft development, civil engineering flows and experimental research, our multi-hole probes are manufactured using the latest Direct Metal Laser Sintering (DMLS) metal additive manufacturing. Typically produced in stainless steel, we can also use Titanium for weight-critical applications, or Inconel for operation in high temperature flows up to 980°C.
All probes are individually calibrated in our in-house wind tunnel across five discrete flow speeds and over their full operating yaw and pitch angle ranges. Calibration data is supplied as simple lookup tables, enabling fast and efficient implementation in real-time measurement systems, or post-processing workflows.
Key Specifications
- Accuracy: +/-0.25%
- Flow angle: Up to+/-45°
- Max temperature: 980°C
- Minimum probe head diameter: 2mm
Instrumentation Products
Yaw Pitots
Accurate wind speed and direction information, critical in high level motorsport.
Kiel Probes
Accurate total pressure measurement even at high flow angles.
Kiel Rakes
Arbitrarily shaped Kiel probe arrays for bespoke flow mapping.
Pressure Scanner
High-accuracy 8-channel differential pressure scanner.