Bae Systems, Inc.

Bae Sysytems Plc

Richard John Harper

Gareth Michael Lewis

Gary David Panaghiston

Larry Brian Tween

Nicholas Chandler

Mark Christopher Nguyen

Thomas Mark Plucinski

Robert Alan Lewis

Jonathan Pinto

Waseem Mohammed Anees Qureshi

Samuel David Charles Parfitt

Stephen William McLaren

A tamper-resistant lock assembly comprising a plate having a slot for receiving a key, the slot extending through the plate from an opening in a front face thereof to an exit in an opposing rear face thereof, the opening having a first profile and the exit having a second, different profile, the key comprising a shaft having a bit extending therefrom, the bit being formed of a shape memory material and being pre-configured such that its cross-sectional shape in its temporary form matches the first profile and the bit can be inserted through the slot via the opening and, upon application of a predetermined external stimulus, returns to a permanent form in which its cross-sectional shape matches the second profile and the bit can be retracted from the slot via the exit.

Lock for a tamper resistant assembly

A waveguide comprising first and second waveguide sections, each waveguide section comprising a main body portion () and a connecting portion () at its distal end, said first and second waveguide sections being longitudinally aligned to define a conduit therethrough with a butted interface () therebetween, the connecting portion of each waveguide section having: (i) a first circumferential ridge () on its outer surface located adjacent its distal end, (ii) a second circumferential ridge () on its outer surface spaced apart from the first circumferential ridge, and (iii) a third circumferential ridge () on its outer surface located between said first and second circumferential ridges, such that a first respective recess () is defined between said second and third circumferential ridges and a second respective recess () is defined between said first and third circumferential ridges; the waveguide further comprising a sleeve member () over said butted interface (), such that a respective first cavity () is defined between an inner surface of said sleeve member () and each said first recess () and a respective second cavity is defined between the inner surface of said sleeve member () and each said second recess (), each said first cavity () having a chemical adhesive therein operative to join said first and second waveguide sections together by means of said sleeve member ().

Apparatus for connecting first and second waveguide sections comprising an adhesive disposed in cavities between circumferential ridges and a sleeve member

A heat exchanger assembly () comprises: a hot fluid flow channel (); a cold fluid flow channel (); and a heat exchanger () disposed between the channels. The heat exchanger comprises a heat sink () and a thermoelectric device (). In some embodiments the fluid flow channels () may be arranged to provide a cross-flow of the hot and cold fluids.

Laminated heat exchanger including a heat sink and a thermoelectric device

According to the invention there is provided a balun including: a slotline which is coupled to an input line and an output line, in which at least a portion of the slotline is sandwiched between a first and a second layer of dielectric material.

Balun

There is disclosed herein a layer assembly for a heat exchanger, the layer assembly comprising: at least one heat pump module, the module comprising a thermo-electric cooler (TEC) attached to an island formed from a flow-permissive material; a flow-permissive layer provided with an island-reciprocating recess for substantially corresponding to and accommodating the island; a thermal storage layer comprising a heat transfer matrix material charged with a phase-change material, and provided with a TEC-reciprocating recess for substantially corresponding to and accommodating the TEC, wherein the TEC is attached to the thermal storage layer at a surface of the TEC-reciprocating recess, and the flow-permissive layer and the thermal storage layer are arranged such that the island of flow-permissive material extends into the island-reciprocating recess and a separation exists between the island and the flow-permissive layer.

Layer assembly for heat exchanger

There is disclosed a balun for dividing an input electrical signal to produce first and second output electrical signals which are substantially out of phase, the balun including: an input port for receiving the input electrical signal; an input line for coupling the input electrical signal to a slotline; and an output line for coupling the first and second output electrical signals to, respectively a first output port and a second output port, the output line having a junction with the slotline; wherein the slotline couples the input electrical signal to the junction, and the junction acts as a divider to produce the first and second electrical signals; in which at least one of the input line, slotline and output line has a width and a length wherein the width varies over the length.

An antenna assembly is disclosed which includes a layered structure having a planar array of antenna elements; and a feed arrangement perpendicular to the antenna elements; the layered structure further having layers over the planar array of antenna elements with holes provided therethrough to allow the feed arrangement to be connected to contacts for the antenna elements. The layered structure may include vias provided such that heat may be applied remotely to the contacts.

Antenna array

A feed module is provided for an array antenna. The feed module comprises a multi-layer printed circuit board (PCB) feed structure for coupling signals between connections to transmitters or receivers and connection points for connecting to antenna elements of the array antenna. The multi-layer PCB feed structure comprises a body portion, incorporating coupling components, and a number of line sections for connecting to elements of the array antenna. The planar layers of the multi-layer PCB are arranged to be mounted substantially perpendicular to a planar array of antenna elements of the array antenna when the feed module is integrated therewith.

Growing community of inventors

Chelmsford, United Kingdom

Richard John Harper