Abstract: In a wireless mesh network having a known or predetermined physical topology, a network node or access point (AP) may promptly begin operation on the network in response to receiving a network advertisement. In particular, the node or AP can store a network communication schedule and adjust the network communication schedule based on parameter value(s) received in the network advertisement received from the network manager. As a result, the node or AP can begin operating in accordance with a network's communication schedule promptly after receiving the network advertisement by transmitting packets using pairs of communication channels and timeslots assigned thereto in the adjusted communication schedule. The network communication schedule stored by the node or AP can take the form of an algorithm that takes the parameter value(s) received in the network advertisement as input(s) and, when executed by the node or AP, outputs the appropriate adjusted network communication schedule.

Abstract: In a wireless mesh network having multiple network managers, the network managers maintain network security through the use of encryption keys and packet counters. To ensure that each network manager can authenticate communications with any node of the network, the authentication data is replicated in a disjoint manner in all network managers. Advantageously, network reliability is assured by providing redundant managers that can seamlessly maintain network operation even if multiple network managers fail; newly joining managers can obtain full authentication data for the network upon joining; and network throughput is increased by ensuring that any of the multiple managers can authenticate the communications of any network node. The disjoint replication of the authentication data across all network managers is performed with low data-rate manager-to-manager packets propagated through the network.

Abstract: A network manager of a wireless mesh network is configured to selectively enable or disable communication services provided between devices over the network. The selective enabling or disabling of services may be based on the monitoring and enforcement of license terms set according to license information embedded within the wireless network node(s) or access point(s) of the network. In operation, the network manager retrieves the license information from the node(s) and/or access point(s) of the network, and establishes license terms based on the retrieved license information. In turn, the network manager selectively enables or disables network services, such as by throttling communications relayed between the user application and the nodes, or between nodes, if the license terms are not respected.

Abstract: A multi-body gas turbine engine, especially an aircraft engine, comprising at least one low-pressure rotating body, a high-pressure rotating body, and a starter designed to rotate the high-pressure body in order to start the engine, wherein the starter is coupled to the low-pressure body and the engine comprises a first disengageable coupling device disposed between the low-pressure body and the high-pressure body, for rotatably connecting the high-pressure body to the low-pressure body so as to allow the starting of the engine by means of the starter.

Abstract: A wireless mesh network is provided with equipment and methods for monitoring and enforcement of license terms. The network includes a plurality of wireless network nodes, a wireless access point, and a network manager in communication with the access point and with the network nodes via the access point. At least one of the network nodes and the access point includes license information embedded in the device hardware, and the network manager provides services to the wireless network subject to license terms determined based on the license information embedded within the network node or access point. Additionally, the network manager is in communication with a user application external to the network, and relays communication between the user application and the wireless network. The network manager modulates communications relayed between the user application and the wireless network subject to the license information embedded within the network node or access point.

Abstract: The stability of a channel in a wireless network is evaluated at a node. Upon transmitting a packet from the node on a network channel, a first counter associated with the channel is incremented. Upon receiving an acknowledgment packet responsive to the transmitted packet, a second counter associated with the channel is incremented. A stability metric for the channel is computed based on values stored in the first and second counters. Additionally, interference on a channel of the network is measured at a node. Upon determining that no packet is received during a predetermined time-period on the channel, a received signal strength (RSS) is measured on the channel at an end of the predetermined time-period. Alternatively, upon determining that a packet is received during the predetermined time-period on the channel, the RSS is measured on the channel following completion of the transmission of the packet on the channel.

Abstract: A gearbox to be mounted on a turbomachine and driven by a radial drive shaft of the latter. The gearbox has a three-dimensional or sinuous shape, which can house a large quantity of equipment to be driven, without occupying a large amount of space in any dimension, since the gearbox remains close to the turbomachine and the equipment can be distributed over a large surface. The drive train of gears successively extends into several non-parallel planes and comprises an axial branch on the turbomachine and a branch forming an arc of circle around the turbomachine.

Abstract: A control system (10) for controlling the pitch of a propeller (50), the system comprising a propeller shaft (60), a blade swivel device (20) having a rotary control element (22) suitable for placing the blades (52) in an angular position corresponding to a desired propeller pitch, and a transmission (12) presenting an outlet member coupled in rotation with the rotary control element (22) of the blade swivel device (20). The transmission (12) includes a variable speed drive (70) having drive, control, and outlet rotors that are coupled in rotation respectively with the propeller shaft (60), with a control member, and with the outlet member of the transmission. By means of the variable speed drive (70), the speed of rotation of the outlet member of the transmission is a predetermined function of the speeds of rotation not only of the propeller shaft, but also of the control member.

Abstract: A multi-body gas turbine engine, especially an aircraft engine, comprising at least one low-pressure rotating body , a high-pressure rotating body, and a starter to rotate the high-pressure body in order to start the engine, wherein the starter is coupled to the low-pressure body and the engine comprises a first disengageable coupling device disposed between the low-pressure body and the high-pressure body , for rotatably connecting the high-pressure body to the low-pressure body so as to allow the starting of the engine by means of the starter.

Abstract: A mesh network system includes a plurality of network nodes, a network manager, and at least one access point. The network nodes communicate wirelessly with each other and the at least one access point of the mesh network system. The network manager manages operation of a wireless mesh network including the nodes and the at least one access point. The at least one access point communicates wirelessly with the network nodes, and provides a gateway between the wireless mesh network and the network manager. The at least one network access point is operative to synchronize its operation timing to an external clock, such as a UPS or UTC clock. Furthermore, in wireless mesh networks including multiple access points, the access points can synchronize their operation timing to each other, and can provide timing information to other access points and nodes in the network.

Abstract: A wireless mesh network system includes network nodes that operate in blink and canopy modes of operation. In operation, a network manager joins nodes operating in the canopy node to the network and allocates network bandwidth to the canopy nodes. The allocated bandwidth includes a first bandwidth allocated for transmitting and receiving data packets between canopy nodes that are joined to the network, and a second bandwidth allocation for receiving network joining messages from nodes that are not joined to the network. The second bandwidth allocation is also used for receiving data messages from nodes operating in the blink mode. Thus, in response to receiving a message that was transmitted from a blink node to a canopy node using the second bandwidth allocation, the network manager identifies the message as a data message and provides the data from the message to a host application.

Abstract: A device includes a channel, which defines an inner space for receiving medical equipment. The channel is reversibly deformable between a first stable spatial configuration and at least one second stable spatial configuration. The device includes a plurality of holders for supporting the channel over a bearing surface. The device also includes a distal wall and a proximal wall longitudinally closing off the inner space.

Abstract: A vehicle integrated jack device provides independent extension of separate jack arms controlled from an interior of a vehicle. The assembly includes a vehicle having a frame and a plurality of wheels coupled to the frame. Each of a plurality of jack arms is coupled to and extendable from the frame of the vehicle. Each of the jack arms is positioned proximate an associated one of the wheels. A control unit is positioned in an interior of the vehicle. Each of the jack arms is operationally coupled to the control unit such that each jack arm is independently extendable by operation of the control unit.

Abstract: A wireless mesh network is provided with equipment and methods for monitoring and enforcement of license terms. The network includes a plurality of wireless network nodes, a wireless access point, and a network manager in communication with the access point and with the network nodes via the access point. At least one of the network nodes and the access point includes license information embedded in the device hardware, and the network manager provides services to the wireless network subject to license terms determined based on the license information embedded within the network node or access point. Additionally, the network manager is in communication with a user application external to the network, and relays communication between the user application and the wireless network. The network manager modulates communications relayed between the user application and the wireless network subject to the license information embedded within the network node or access point.

Abstract: Embodiments of the present invention assist customers in managing the four types of energy assets, that is, generation, storage, usage, and controllable load assets. Embodiments of the present invention for the first time develop and predict a customer baseline (“CBL”) usage of electricity, using a predictive model based on simulation of energy assets, based on business as usual (“BAU”) of the customer's facility. The customer is provided with options for operating schedules based on algorithms, which allow the customer to maximize the economic return on its generation assets, its storage assets, and its load control assets. Embodiments of the invention enable the grid to verify that the customer has taken action to control load in response to price. This embodiment of the invention calculates the amount of energy that the customer would have consumed, absent any reduction of use made in response to price.

Abstract: The invention relates to a device comprising a channel (20) defining an inner space (22) for receiving medical equipment, the channel (20) being reversibly deformable between a first stable spatial configuration and at least one second stable spatial configuration. It includes a plurality of holders (24A to 24E) for supporting the channel (20), designed to support the channel (20) over a bearing surface supporting the device (14). It comprises a distal wall (26) and a proximal wall (28) longitudinally closing off the inner space (22).

Abstract: This A gearbox to be mounted on a turbomachine and driven by a radial drive shaft of the latter. The gearbox has a three-dimensional or sinuous shape, which can house a large quantity of equipment to be driven, without occupying a large amount of space in any dimension, since the gearbox remains close to the turbomachine and the equipment can be distributed over a large surface. The drive train of gears successively extends into several non-parallel planes and comprises an axial branch on the turbomachine and a branch forming an arc of circle around the turbomachine.

Abstract: A turbomachine or a turbojet engine or a turboprop engine of an aircraft, including at least one oil circuit and a cooling mechanism including a refrigerant circuit including a first heat exchanger configured to exchange heat between the refrigerant and air and forming a condenser, a second heat exchanger configured to exchange heat between the refrigerant and the oil of the oil circuit and forming an evaporator, an expander mounted downstream from the first exchanger and upstream from the second exchanger, in a direction in which the refrigerant circulates, and a compressor mounted downstream from the second exchanger and upstream from the first exchanger.

Abstract: The stability of a channel in a wireless network is evaluated at a node. Upon transmitting a packet from the node on a network channel, a first counter associated with the channel is incremented. Upon receiving an acknowledgment packet responsive to the transmitted packet, a second counter associated with the channel is incremented. A stability metric for the channel is computed based on values stored in the first and second counters. Additionally, interference on a channel of the network is measured at a node. Upon determining that no packet is received during a predetermined time-period on the channel, a received signal strength (RSS) is measured on the channel at an end of the predetermined time-period. Alternatively, upon determining that a packet is received during the predetermined time-period on the channel, the RSS is measured on the channel following completion of the transmission of the packet on the channel.

Abstract: The invention relates to an optical wavelength conversion device adapted to receive at least one first pump beam (?1) as an input and emitting a different wavelength output beam (?S), which includes: an optical cavity (CE); an optically non-linear medium (CNL) placed inside the optical cavity; and a control system (BA1) for controlling said optical cavity having the wavelength of the first pump beam; said control system being adapted to receive, as an input, a first signal (S1) representing the power stored in the cavity having said first wavelength and a second signal (S2) representing the power of the output beam. The invention also relates to a coherent light source comprising such a device and one or two pump laser sources (L1, L2).