Abstract: A device may at least one laser with a first optical frequency the at least one laser stabilized to a at least one frequency reference, wherein the at least one laser is locked to the at least one frequency reference. A device may at least one photodiode and at least one laser current servo for locking the at least one laser to the at least one frequency reference. A device may at least one modulator configured to modulate a resonator, wherein the at least one frequency reference is a resonator, the resonator comprising a waveguide core and a tuner, wherein the tuner is laterally offset from the waveguide core.

Abstract: A method of operating a compressor in an adaptive core engine is disclosed. The method comprises the steps of operating a front block compressor to increase pressure of a fluid to a first pressure ratio in a high-power mode operation; operating a rear block compressor coupled to the front block compressor such that the front block compressor and the rear block compressor operate at the same physical speed; closing a rear block stator vane located axially forward from the rear block compressor such that the flow of the fluid into the rear block compressor is substantially cut off; and keeping a blocker door opened such that substantially all of the fluid pressurized by the front block compressor flows through a bypass passage during the high-power mode operation.

Abstract: A method of operating a compressor in an adaptive core engine is disclosed. The method comprises the steps of operating a front block compressor to increase pressure of a fluid to a first pressure ratio in a high-power mode operation; operating a rear block compressor coupled to the front block compressor such that the front block compressor and the rear block compressor operate at the same physical speed; closing a rear block stator vane located axially forward from the rear block compressor such that the flow of the fluid into the rear block compressor is substantially cut off; and keeping a blocker door opened such that substantially all of the fluid pressurized by the front block compressor flows through a bypass passage during the high-power mode operation.

Abstract: An electric generator apparatus in the form of a self-contained module that can be attached to a vehicle and which is capable of generating electricity in response to movement of air through the module as the vehicle travels down the road. The electricity so generated may be used to power accessories on the vehicle or supplement the main engine in the vehicle. The module includes an inlet funnel or venturi, suitable rotating impellers or turbines responsive to the moving airstream therethrough, a suitable transmission or gearbox, a generator, and an electrical regulator or controller for delivering the electricity generated to a storage battery on the vehicle. Because of the relatively small size of each module, it can be placed anywhere on the vehicle and used in groupings or sets to increase the amount of electrical current produced.

Abstract: A system for distributing various content data to user terminals having at least one application for interpreting the content data and presenting it to a user, the system including a multiplicity of individual tokens, each token bearing an identity code, and having a user-removable obscuring means obscuring reading of the identity code; a content server connected to a communication network whereby it may communicate with the terminals, and including data storage means storing the content data, and for each of the identity codes an indication of an item of the content data with which that code is associated, and indicated on the or each token bearing that code, and arranged to, on receiving from a terminal an identity code of a token, retrieve from the data storage means the item of content data associated with that code and transmit it to that terminal.