The Hong Kong Polytechnic UniversityDepartment of Aeronautical and Aviation EngineeringBack to the lab ↗

SOURCES & ATTRIBUTION

Wind-tunnel Similarity & Measurement

Primary references and their specific role in this teaching laboratory. The diagrams and implementation are original.

Verification checks consistency with the declared equations. It does not establish experimental accuracy for an aircraft or facility.

Reviewed 23 October 2026 UTC. Content is paraphrased and graphics are original. Sources establish concepts and equations; none supplies validation data for this browser model.

  1. NASA Glenn: Similarity Parameters. Read online. Re and M represent distinct viscous and compressibility effects. Used for the learning objective and matching definitions.
  2. NASA: Langley National Transonic Facility. Read online. Explains why a real facility independently adjusts pressure, temperature and speed. This lab does not reproduce its hardware, facility limits or nitrogen properties.
  3. NASA LAVA: CRM wing-body steady RANS example. Public reference for the SI Sutherland constants 1.458e-6 and 110.4 K. No solver, mesh or aerodynamic results copied.
  4. US Standard Atmosphere 1976: defining constants and equations. Public primary reference for the dry atmosphere and viscosity relations. The interface uses only the 0–11 km tropospheric segment.
  5. NIST TN 1297 Appendix A: Law of Propagation of Uncertainty. Read online. Used for first-order sensitivity propagation and the distinction between standard uncertainty and an error bound. This simplified teaching budget deliberately excludes model-form and wall-correction uncertainty.

An ERAU wind-tunnel textbook page appeared in search, but full-page access returned HTTP 403. Its unseen text was not used as equation evidence. No online images or lecture figures are redistributed.