Abstract:
The present invention is a system for the transmission of a plurality of analog video, analog audio, and discrete signals across a single fiber optic cable. The system includes a transmitter which first digitizes the analog video and audio signals and then converts a combination of the digital video, digital audio, and discrete signals into a single serial digital data stream. The system modulates this digital data stream into a corresponding lightwave signal and transmits the lightwave signal across the fiber optic cable. A receiver within the system demodulates the lightwave signal into a serial digital data stream, which is then converted into a parallel signal so that the receiver may restore the analog video, analog audio, and discrete signals from the parallel combination of signals.
Abstract:
A cartridge case for a cased telescoped ammunition round 10. The cartridge case includes a hollow cylindrical casing 12 the axis 15 of which is also the axis of symmetry of round 10. The inner surface of casing 12 has a longitudinal groove 48 formed in it along which groove 48 casing 12 splits when round 10 is fired. A rear seal 16 closes the rear end of casing 12 and a front seal 18 closes the front end of casing 12. A hollow cylindrical control tube 20 which includes a control portion 22 and a sleeve portion 24 is secured to seals 16, 18 so that control tube 20 is symmetric with axis 15. A spring 26 interconnects control portion 22 and sleeve portion 24 of control tube 20 and applys a force substantially parallel to axis 14 to seals 16, 18 to move seals 16, 18 toward each other to minimize the distance between seals 16, 18 after the round is fired and to confine the casing between seals 16, 18.
Abstract:
A system guides a vehicle along a predefined path by correlating vehicle side range profiles. A lead vehicle gathers side range data using active radiation sources such as light emitting diodes. A microprocessor-based system on board the lead vehicle stores the data into records of a database file, tagging each record to indicate a relative position along the path when the lead vehicle obtained the data. A system on board a follower vehicle gathers its own side range data and also generates a side range profile for the follower vehicle. The follower vehicle's system receives by radio communication the side range profiles from the lead vehicle and, using the tagging information, correlates these profiles with the follower vehicle side range profiles at appropriate points along the path. As a result of the correlation, the follower vehicle's system outputs commands to actuators coupled to the vehicle's steering system, throttle, and braking system to control the vehicle's motion so that the vehicle traverses the predefined path.
Abstract:
Improved anodes having active materials consisting substantially of one or more lithium insertion compounds further consisting of transition metal chalcogenides or oxides capable of reversibly intercalating lithium ions are disclosed. Cells utilizing these anodes are also disclosed.
Abstract:
An electro-mechanical base element fuze is disclosed wherein mechanical innovations along with the latest in electronic sensing, signal processing and miniaturization provide safety and simplicity as well as improving performance, reliability and reducing costs.
Abstract:
A voltage controlled oscillator is disclosed in a "ring" configuration using two BJTs. The design uses an active feedback topology which eliminates the need for a tank circuit for oscillation to occur. The design also provides for the mixing function to be performed by one of the BJTs.
Abstract:
A dipole magnet is placed in a sabot of an explosive projectile. The magnet is arranged and configured within the interior surface of the sabot--such that when the sabot is placed over the casing of the projectile, the majority of the magnetic flux tends to take a path through the projectile casing and between two sensing coils located within the fuze and within the projectile. The first sensing coil forms a larger circle which encompasses the aft end or outer diameter of the projectile which is made up of ferrous materials. The second sensing coil forms a smaller concentric circle (relative to the first sensing coil) and is situated inside the inner diameter of the after end of the projectile, thus encompassing no ferrous metal. The majority of the flux from the magnet enters the ferrous projectile casing, travels through the casing, and exits primarily between the two coils on a continuous path back to the magnet. In operation, as the sabot moves away from the casing after exit from the bore, the magnet also moves away. The result is that a change in the amount of flux flowing between the coils occurs. The change in flux moving between the two coils of wire creates a voltage that can be used to detect the sabot release. The second sensing coil is utilized to produce a gradiometer sensor. The output from the first and second sensing coils is provided to a summing block, the output of which is provided to a preamp/signal conditioning block. After the signal has been conditioned, the signals are provided to a differentiator and then to a threshold detector for subsequent transmission to the fuze logic.
Abstract:
Material is incorporated in each of the cell separator membranes of an electrochemical cell having a layered construction wherein a plurality of commonly connected metal anode layers and a plurality of commonly connected cathode layers are arranged in a closely packed, stacked sandwich construction, separated by a plurality of thin insulating separator membranes which gives each cell separator a known resistance value which can be measured thereby allowing total cell resistance to be readily tested.
Abstract:
A fuzing system for use in operating tandem demolition warheads to sequentially activate a propellant on the rear of a follow through charge, detonate a forward shaped charge and detonate the follow through charge after a brief delay. An interface charge is located proximate to blasting caps. A first fuze responsive to the interface charge is configured to ignite the propellant and to arm the first arming assembly. A second fuze responsive to the interface charge is configured to arm the second arming assembly. A first arming assembly containing a first firing pin is located proximate to the follow through charge. A delay fuze is interposed between the first primary charge and the follow through charge. A second arming assembly containing a second firing pin is located proximate to the forward-shaped charge. In the armed state, a primary explosives are interposed between the firing pins and the follow through charge and forward shaped charge. The ignited propellant accelerates the follow through charge into the second firing pin, detonating the forward-shaped charge and forming a hole in the structure to be demolished. The shock wave from the detonation of the foward-shaped charge decelerates the follow through charge, causing the first firing pin to impact the first primary explosive, activating a delay fuze. The delay fuze provides sufficient time for the follow through charge to enter the opening in the structure formed by the forward-shaped charge prior to detonation.
Abstract:
A piezoelectric power supply for a fuze assembly includes a stacked array of piezoelectric ceramic discs, a hollow can for holding the stacked piezoelectric discs, flexible electrical circuits interposed between the discs and the interconnecting respective positive and negative faces of the discs. The can is deformable upon receipt of a predetermined pressure impulse for transmitting the pressure to the discs. The flexible circuits conduct electrical current and provide positive and negative terminals for supplying electrical power upon deformation of the can and the piezoelectric discs by the pressure impulse.