Instrumentation & Testing

The Problem

Engineering is not complete until the result has been demonstrated under representative operating conditions. Yet many small-aircraft programs fly with almost no instrumentation, and their thermal and performance problems are diagnosed by anecdote — "it runs hot in summer" — rather than by data.

Without measurement there is no validation; without validation, simulation is opinion.

REAH's flying-laboratory platform for developing thermal, propulsion and flight-validation instrumentation. The current programme is advancing through instrumentation architecture and baseline test preparation.

Typical Customer Questions

• What should we measure to actually diagnose this problem — and where do the sensors go?
• How do we instrument a cooling system without disturbing the thing we are measuring?
• Can you run the ground and flight test campaign and reduce the data?
• Do the flight measurements confirm the model — and if not, why not?

How We Work

1. Engineer. Define the measurement plan from the engineering question: quantities, ranges, accuracies, sensor placement.
2. Simulate. Use the system model to predict what the sensors should read — before the test.
3. Build. Install sensors, data acquisition and telemetry; build test rigs where ground testing comes first.
4. Test. Execute the campaign and reduce the data against the controlled test configuration.
5. Learn. Compare measurement against prediction, publishing agreement, discrepancy and uncertainty while updating the model.
6. Transfer. Deliver the sensor architecture, procedures, data structure and analysis method so the customer can repeat the evidence cycle.

Typical Deliverables

• Instrumentation plans and sensor specifications
• Installed data-acquisition and logging systems
• Ground-test and flight-test campaign execution
• Test-data reduction and model-correlation reports
• A measured, documented operating envelope

Evidence

Our instrumentation and test methods are being developed on our own flying laboratory — an instrumented pusher-configuration testbed for exactly this work. Results are published with explicit evidence labels.

Boundaries and Limitations

• Flight testing is conducted within applicable regulations and the aircraft's approved envelope.
• Measured results include uncertainty and repeatability context appropriate to the test campaign.