Abstract: An air-conditioner comprises, in an accommodating structure: an axial compressor powered by a built-in motor unit which circulates air, an axial flow-straightening stator to create a static pressure in excess of atmospheric pressure by transferring the air stream obtained in a static centrifugal compressor that creates a rotational flow with the air stream being routed through an axial flow-straightener/diffuser. The flow-straightener/diffuser is internally hollow to circulate ambient air and, externally, straightens the turbulent flow into an axial flow and relieves the pressure. A transfer valve is adapted to the flow-straightener/diffuser to selectively regulate the flow of hot air with the addition of ambient air. A vortex accelerates the air stream using a turbulence effect before it enters an expansion chamber that produces cold and directs the air stream into a final air control valve under the selected temperature conditions.

Abstract: A monoski has at least one pilot ski, the dimensions of which are inscribed within the perimeter of the monoski, releasably attached on the face of the monoski opposite the sliding face by means of a stop located on the same side as the heel of the pilot ski, a sling-shaped elastic loop located on the same side as the tip of the pilot ski, the two fastening points of the elastic loop being located on either side of the pilot ski at a sufficient distance from the stop to ensure that the elastic force exerted by the elastic loop keeps the heel of the pilot ski firmly against the stop, and at least one strap which straddles the pilot ski and holds it against the monoski.