Research Projects

Update of Runway Vertical Curve Requirements for Longitudinal Grade Changes, Considering New Large Aircraft (NLA)

Updated requirements for runway vertical curves for longitudinal grade changes, mainly for ICAO Code F aircraft and New Large Aircraft (NLA)

Background (Describe the current situation or problem in the industry, and how your idea would address it.)

Currently, there are recommendations for radius of curvature up to ICAO Code E aircraft. There are evidences that New Large Aircraft (NLA), mainly Code F, may impose higher stresses on the pavement valleys, causing permanent deformations, due to the design of short radius of curvature for longitudinal grade changes. Formation of water ponds is a safety issue that also needs to be addressed.

Objective (What is the desired product or result that will help the airport industry?)

Updated requirements for runway vertical curves for longitudinal grade changes, mainly for ICAO Code F aircraft and New Large Aircraft (NLA)

Approach (Describe in general terms the steps you think are needed to achieve the objective.)

Literature review on runway vertical curve requirements and deficiencies in satisfying new large aircraft (NLA)
needs.
Instrument active runways to measure additional stresses created by NLA.
Develop a numerical model to predict runway response from NLA.
Summarize results in a final technical report
Propose recommendations for radius of curvature standards.

Cost Estimate and Backup (Provide a cost estimate and support for how you arrived at the estimate.)

Equipment and Supplies for runway instrumentation, investigator salaries, travel, numerical modeling software.
about $350,000

Related Research - List related ACRP and other industry research; describe gaps (see link to Research Roadmaps above), and describe how your idea would address these gaps. This is a critical element of a synthesis topic submission.

Standards for runway vertical curves are included in FAA Advisory Circular 150/5300-13A. However, research that considers the structural impact that new large aircraft have on the airfield runway is very limited.

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Idea No. 64

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