Friction coefficient runway

Aircraft braking coefficient is dependent upon the surface friction between the tyres on the aircraft wheels and the pavement surface. European reports have nothing to do with stopping distances on a runway , though they . Road Analyzer and Recorder. Society of Automotive Engineers. Runway Weather Information System.

Pavement Surface Condition – table 4-1.

Skid Resistance by Other Names. Specific numerical μ values are . A contamination terminology is used for a qualitative description of the runway condition. It can be used in complement of the friction coefficient value, or alone when a measure is not possible.

Sample for water on the runway : DAMP: the surface shows a change of colour due to moisture. METAR runway state group coding. General format: DRDRCEttBB. DRDR is the runway designator.

C is the runway deposits designator.

E is the extent of contamination. BB is the friction coefficient or braking action. The report discusses a number of factors that likely influence the mismatch between aircraft brak- ing coefficients and runway friction coefficients , including regulatory climate, limitations of friction measure- ments, meteorology, runway treatment. Investigation Board Norway (AIBN). Copy the runway state group exactly as it appears in your pre flight brief then finish by tapping Done.

The decoder supports both braking action and friction coefficient and automatically detects which one is used. If we use the runway state . Assessments made following Maintenance Activities. Abstract: In this paper an airstrip friction coefficient measuring method developing for extreme weather conditions and correlation between the measured and braking characteristics of real aircrafts are presented.

The conceptual model of towed friction coefficient tester that realizes brand new friction coefficient. Abstract: The paper deals with the conceptual model of a towed measuring complex implementing a new runway friction coefficient measurement technology. The technology is based on the principle of controlled deceleration of the measuring wheel to simulate them in the process of measuring in anti-lock braking modes.

On correlation between the airport runway friction coefficient measurement and the real-life aircraft take-off and landing braking Characteristics. Abstract: In this paper it is considered the technique design and algorithms for friction testing measuring implementation that are based upon the simulation of the real . The friction coefficient on runways shall be measured by use of the aerodrome braking cart (ATT-2). The values of friction coefficient measured by ATT-(the aerodrome brak- ing cart) completely correspond to the values of friction coef- ficient by SFT for the same pavement conditions. The relationship determined between each of the ground-vehicle friction measurements and the values measured by the Tapley meter under similar winter runway conditions is identified below together with corresponding standard deviation and correlation coefficient values: Regression Equation Standard Deviation . The reported IRFI and the calculated aircraft braking friction were to be compared to evaluate the agreement between the IRFI index and the actual effective aircraft braking coefficient.

SCOPE AND ACCOMPLISHMENTS.