Textura, atrito e seus indicadores: uma inspeção na pista do Aeroporto Presidente João Suassuna.

Abstract

The guilt backed in aeronautical disasters is never an end in itself. And these were held even in the early days of Commercial Aviation. Much later, we discovered the holistic junction established in decades of scientific advances and aligned in the set “Climate Phenomenology – Human Performance – Vehicular Technological Factor (airplanes, helicopters etc.) & Supra and Infrastructural Incorporation”, we can now talk about “Operational Flight Management” and, within this, “Airport Pavement Management” as a union of concessional practices to a good and safe trafficability, especially in soil, of this type of means of transport. It is known, by Boeing data from 2007 to 2016, that 78% of fatal aeronautical accidents are due to the premences of the aircraft climbing and downhill, including the instants of ground manoeuvres. What, by itself, becomes a crucial point in a plausible justification for studies of causes and effects under the concrete perception (in the customary, in media, press and related) of these occurrences (one of the objectives of this work), it also branches increasingly and, from the standpoint of Civil Engineering, it continues to deepen the general structural compliance of airports. In the light, then, a broad object of studies here: the Airport Floor Management Systems (SGPA), directly interconnected to these phases of landings and takeoffs, under the context of the Infrastructures necessary to such. Internally to this vast level of research, emerges the category of “evaluation of the superficial (or functional) conditions” of the landing lanes. That is, based on basic criteria, such as Serventia (Comfort), Irregularities and asymmetries, relationships of (Macro & Micro) Texture, Friction Indices and other national and internationally parameterized values, it is possible to establish controlled levels of usability, Friction, or Tyre-Pavement Adhesion, such that avoid skidding at critical moments for the pilot and for the aerial vehicle in question, consequently, also, avoiding incidents or accidents arising from it. As soon, as the objective was to (specifically) carry out an inspection on the runway of the Presidente João Suassuna Airport in Campina Grande (PB), in order to examine whether Macrotexture, Microtexture and the Coefficient of Friction of its main pavement met the technical specificities required by standards to ensure stable traffic, classising them in the particular spectra of each and verifying whether their changes (light, balanced or abrupts) were reconciled with the anti-slip praxis required to via. For this purpose, there was the realization of in loco assays identified as “Kinetic Friction Test with the British Pendulum” and “Medium Height Test of Sand Stain”, determining Microtexture and Macrotexture, respectively, and being conjugate their results in International Friction Index (IFI), according to standard methodologies. From this, it was possible to draw, in graphic, photographic and discursive arguments, as the attributes found, although, perhaps, at a minimum threshold, they reflected clearly in the management of the runway of João Suassuna Airport, with the good habits of prevention to aquaplaning.