Aircraft performance in slippery runway conditions : a simulation study of the accuracy and limitations of real-time runway friction estimation based on airplane onboard data.

Details

• Creators:
  van Es, Gerard W.H. ; van der Geest, Peter J. ; Cheng, Andrew ; Stimson, Don
• Corporate Creators:
  United States. Federal Aviation Administration ; National Aerospace Laboratory (Netherlands)
• Subject/TRT Terms:
  • Airport runways
  • Runway overruns
  • Slipperiness
  • Braking
  • Algorithms
  • Real time information
  • Simulation
  • Friction
  • Feasibility analysis
• Publication/ Report Number:
  DOT/FAA/TC-14/32
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Federal Aviation Administration
• Abstract:
  Runway overrun accidents occurring during landings in slippery conditions continue to occur frequently worldwide. After a ; number of specific landing overrun accidents in the U.S., the National Transportation Safety Board (NTSB) issued a safety ; recommendation to investigate the technical and operational feasibility of outfitting transport category airplanes with equipment ; and procedures required to routinely calculate, record, and convey the airplane’s braking ability. ; In this context, this study developed an algorithm for real-time onboard runway friction estimation. The algorithm was ; demonstrated in a high-fidelity simulation test that applied data and knowledge of detailed aerodynamic and engine models to ; represent a specific regional jet. The primary objective was to evaluate the impact of measurement and modeling errors to the ; runway friction estimation obtained from the algorithm. ; The simulation showed that onboard runway friction estimation can provide an accuracy of approximately ±5%; measuring errors ; based on realistic sensor noise and bias. However, to achieve such performance, a fairly precise estimate of instantaneous thrust, ; weight, and drag is required. It was noted that 1% of inaccuracy in these quantities translates directly into at least a 1% estimate ; error. A representative model of the ground effect is also critical to the estimation accuracy. Nevertheless, errors in the ; calculation of aerodynamic lift and pitching moment seemed to be negligible. The results of this study can be further used to ; define an operational concept in line with the recommendation of the NTSB.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/29057/dot_29057_DS1.pdf
• File Type:
  [PDF - 1.43 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:c5314b276e769765205ea5286a78110b1bab171fe0c617916aa6a66631413eef