Abstract:
The present invention relates to an electrochemical cell characterised in that it comprises at least a positive electrode which comprises manganese oxide physically separated from at least a negative electrode which comprises an aluminium alloy, and wherein said positive and negative electrodes are electrically connected through a neutral pH electrolyte. Further, the present invention relates to the use of the electrochemical cell, preferably as a button battery in hearing aids.
Abstract:
Methods and systems for determining trajectories for vehicles of a fleet of vehicles are provided. In one example, a method comprises receiving an initial location of one or more vehicles, and receiving a sequence of coverage requirements for a region and an associated period of time. The region may be divided into a plurality of landmarks and the period of time may be divided into a plurality of phases. The method also comprises determining for each of one or more phases and at least one respective landmark, a set of starting landmarks from which a vehicle could reach the respective landmark during the phase. The method further comprises determining which respective landmark that the vehicle should travel to during the one or more phases based on the sequence of coverage requirements and the set of starting landmarks for the one or more phases and the at least one respective landmark.
Abstract:
The invention relates to a drone comprising: two contra-rotating annular propellers (2, 4) defining a plane therebetween which is referred to as an equatorial plane and is assumed to be horizontal, means for driving the propellers, a load arranged below the equatorial plane, and means (20) for moving the load relative to the equatorial plane, an enclosure referred to as an upper enclosure (6) filled with a gas or a gaseous mixture having a density of less than 1 and arranged essentially above the equatorial plane, and an enclosure referred to as a lower enclosure (8) filled with a gas or a gaseous mixture having a density of less than 1 and arranged essentially below the equatorial plane, the load being placed inside the lower enclosure (8).
Abstract:
A fire (1 a) control device(1) is provided comprising at least one aerostat (10) comprising a casing (11) defining an air chamber (11a) suitable to contain a gas lighter than air, a tank (12) defining a collection space (12a) for extinguisher fluid (10a), an identification device (13) suitable to identify when the aerostat (10) is above the fire (1 a) and a valve (14) suitable to permit dropping of the extinguisher fluid (10a) when said at least one aerostat (10) finds itself above said fire (1a).
Abstract:
The invention relates to an airship (1) comprising a flexible envelope (2) having at least one adjustment region (4) provided with two longitudinal adjustment elements (5, 6) mounted in opposition and mobile in relation to each other between a maximum distancing position and a minimum distancing position, the two longitudinal adjustment elements (5, 6) being connected to each other by a group comprising a plurality of cables (7, 7', 8, 8', 9, 9') crossing the inner space (3) of the envelope, each of the cables (7, 7', 8, 8', 9, 9') cooperating with a plurality of tightening points (10) provided along each longitudinal element. The cables are connected to at least one tightening module (20) that can exert a tightening or loosening action on the cables and thereby bring the longitudinal adjustment elements (20) closer together or move them further away.
Abstract:
An intelligence, surveillance, and reconnaissance system and associated operating method is disclosed including a ground station and one or more autonomous aerial vehicles. Each automomous vehicle is adapted to a) self-monitor a plurality of environment data; b) calculate, based at least in part upon the environment data, a soft wall radius from which it can return to the command and control interface station; c) receive a destination position to which it is commanded to fly; d) determine if the destination position is beyond the soft wall radius; and e) communicate an alert to the command and control interface station if the destination position is beyond the soft wall radius.
Abstract:
A hybrid VTOL vehicle having an envelope configured to provide hydrostatic buoyancy, a fuselage attached to the envelope and having at least one pair of wings extending from opposing sides thereof to produce dynamic lift through movement, and a thrust generation device on each wing and configured to rotate with each wing about an axis that is lateral to a longitudinal axis of the envelope to provide vertical takeoff or landing capabilities. Ideally, the envelope provides negative hydrostatic lift to enhance low-speed and on-the-ground stability.