Office National D'etudes Et De Recherches Aerospatiales

Office National D'etudes Et De Recherches Aerospatiales (onera)

Hervé Lachaud

Riad Haïdar

Jérôme Primot

Didier Guffond

Robert Schegerin

Sylvain Maine

A filtering vision element forming a windshield or rearview mirror of a road vehicle includes a lower region and an upper region. The filtering vision element is designed so that a difference in attenuation between two linear polarizations of an incident radiation has values that are of opposite signs in the lower and upper regions. The two linear polarizations may respectively be horizontal and contained in a vertical plane. Blinding of the driver caused by a spot of reflected light produced on a road by headlights of an external vehicle may thus be decreased or prevented.

Filtering viewing element forming a front or rear windshield of a road vehicle

Device and method for anticipating the deposition of ice on a runway, comprising an object having a non-zero relative velocity with respect to the atmosphere surrounding the runway, this surrounding atmosphere being at a certain temperature, a means for determining the thickness of ice present on said moving object, which further includes a temperature sensor for measuring the temperature of the runway, a means for regulating the temperature of said object in such a way that the temperature of said moving object is substantially equal to or slightly below the temperature of the runway, a computing means, for defining at time ta level of icing at time tof the runway as a function of the thickness of ice present on the object, and a warning means allowing the results obtained by the computing means to be communicated to a monitoring station.

Method and device for the anticipated detection of icing on a runway

Growing community of inventors

Le Plessis Robinson, France

Hervé Lachaud