Abstract: A modular agriculture system for use underwater. The system comprises a plurality of node elements (101) each including an agricultural unit and a plurality of connection elements (201) for inter-connecting at least some of said nodes to form a mesh-like structure with nodes at the mesh junctions. A significant portion of said connection elements (201) are of low cross section such that when in use and placed underwater they present a low resistance to the action of waves and currents. A plurality of tensioning elements are connected to the mesh-like structure to place the connection elements (201) in tension.

Abstract: There is provided an apparatus for absorbing or converting energy from a moving body of water. The apparatus comprises an energy capture element (3) which, in use, moves in response to movement of the body of water in which the energy capture element (3) is placed, and an elongate guide element (1) defining a guide path along which the energy capture element (3) can move. The energy capture element (3) is a volume. In use, the energy capture element (3) and the guide element (1) are arranged so that the energy capture element (3) moves along the guide path in a substantially horizontal plane in response to differences in water pressure along a length of the energy capture element (3) parallel to the guide path and in response to movement of the body of water surrounding the energy capture element (3).

Abstract: An apparatus (1) for guiding a flexible member (6) comprising a drum (4) mounted for rotation about a drum axis (5) and a pulley (2) mounted for rotation about a pulley axis (3), the drum and pulley axes being inclined. The apparatus defines a path for the flexible member including first and second drum wrap portions (7,9) on axially spaced first and second fixed drum diametric planes, a pulley wrap portion (8) on a fixed pulley diametric plane, and first and second connecting portions (7a, 7b). The arrangement is such that the connecting portions (7a, 7b) lie on the respective first and second drum diametric planes and both lie on the pulley diametric plane. As the drum (4) and pulley (2) rotate with the flexible member (6) in use, the arrangement is such that the first and second drum wrap portions (7,9) remain on the fixed drum diametric planes and the pulley portion of wrap (8) remains on the fixed diametrical plane of the pulley.

Abstract: A method and system for the prediction of aircrafts vertical trajectory, in particular for Air Traffic Management, using the following flight calculation modules: Take-off; Climb; Cruise; Descent; and Landing, corresponding to the relevant flight phases, in which: the calculation of the predicted aircraft trajectory is effected by using a set of TEM equations using, as output variables, the vertical rate of climb or descent, the true air speed, the energy share factor, the thrust and the drag, the mass of the aircraft modeled as point-mass, and using, as input variables, the Mach number depending on true air speed and temperature and altitude, the gravity acceleration, and the fuel flow, and the flight path angle; the calculation of the predicted aircraft trajectory for Cruise phase, wherein only the mass is varies, is performed by using the following analytical solution to said set of TEM equations.

Abstract: Apparatus for converting movement into energy, comprising a buoyant or floating body fully (1,9,11) submerged in a fluid medium. The buoyant body is supported in the fluid by a buoyancy or similar force acting in a first direction. A connecting or mooring line connects the buoyant body (1,9,11) to a pivot point displaced from the buoyant body in the direction from which the buoyancy or similar force acts on the buoyant body, and formed by a counter-weight (2). The apparatus also includes at least one power or energy take-off line (3) separate from the connecting or mooring line to convert movement of the buoyant body into energy.

Abstract: A wave energy converter apparatus comprising at least two members joined by a connector movable so as to allow displacement of the members relative to one another in response to waves in water where the apparatus is located. The apparatus also includes an energy converter for converting motion of the connector to electrical energy, and a device for storing and/or transporting elsewhere the energy produced. The members, when in use and located in a body of water, are non-floating and completely submerged, the apparatus, as a whole, being neutrally buoyant. A member is additionally provided for maintaining each of the submerged members substantially at rest relative to the surrounding water with which they are in contact, such that the submerged members move under wave-induced action substantially in the same manner as a water particle would move under wave-induced action if located in the same region as the respective submerged member.

Abstract: An apparatus (1) for guiding a flexible member (6) comprising a drum (4) mounted for rotation about a drum axis (5) and a pulley (2) mounted for rotation about a pulley axis (3), the drum and pulley axes being inclined. The apparatus defines a path for the flexible member including first and second drum wrap portions (7,9) on axially spaced first and second fixed drum diametric planes, a pulley wrap portion (8) on a fixed pulley diametric plane, and first and second connecting portions (7a, 7b). The arrangement is such that the connecting portions (7a, 7b) lie on the respective first and second drum diametric planes and both lie on the pulley diametric plane. As the drum (4) and pulley (2) rotate with the flexible member (6) in use, the arrangement is such that the first and second drum wrap portions (7,9) remain on the fixed drum diametric planes and the pulley portion of wrap (8) remains on the fixed diametrical plane of the pulley.

Abstract: The invention concerns a method and system for the prediction of aircrafts vertical trajectory, in particular for Air Traffic Management, comprising the following flight calculation modules: Take-off; Climb; Cruise; Descent; and Landing, corresponding to the relevant flight phases, wherein: the calculation of the predicted aircraft trajectory is effected by using a set of TEM equations comprising, as output variables, the vertical rate of climb or descent, the true air speed, the energy share factor, the thrust and the drag, the mass of the aircraft modeled as point-mass, and comprising, as inpu variables, the Mach number depending on true air speed and temperature and altitude, the gravity acceleration, and the fuel flow, and the flight path angle; the calculation of the predicted aircraft trajectory for Cruise phase, wherein only the mass is varying, is performed by using the following analytical solution to said set of TEM equations.

Abstract: A wave energy converter apparatus comprising at least two members joined mutually by a connector movable so as to allow mutual displacement of the members in response to waves in water where the apparatus is located. The apparatus also includes an energy converter for converting motion of the connector to electrical energy, and a device for storing and/or transporting elsewhere the energy produced. Preferably, the members are non-floating and completely submerged, thereby causing the apparatus, as a whole, to be neutrally buoyant. A member is additionally provided for maintaining each of the submerged members substantially at rest relative to the surrounding water with which they are in contact, such that the members move under wave action substantially in the same manner as an undisturbed water particle located in the same region, the at least two submerged members being spaced mutually by the connector so as to assume respective positions affected differently by the wave-induced water motion.