Abstract: A locking system that consists of two locking mechanisms protected by a dl resistive shutter plate. The shutter plate can be rotated to expose a first lock which when unlocked allows it to be further rotated to uncover the second lock. Upon unlocking the second lock, the drive for the main bolt lock can then be actuated.

Abstract: Signals from a balanced processor are sampled at a constant rate, integra and then divided by the number of samples. Two averages are obtained: a positive half cycle average and a negative half cycle average. Over a long period, clutter contributions tend to cancel. Target dominance is thus enhanced by integrating over half cycles rather than full cycles. A single cycle bias finder adds half cycle averages to obtain a cycle bias. The single cycle bias is fed to the moving average integrator where it is integrated over an optimum number of cycles. Obtaining the moving average reduces the chance that a single cycle bias can cause the average to exceed the threshold while a radially moving target will be detected.

Abstract: A deceleration sled to decelerate and safely contain a launched test miss. The sled has crushable honeycomb which absorbs the initial impact of the missile as the sled accelerates along a track to the same speed as the missile. As the deceleration sled is pushed down the rails, forming shoes on both sides of the sled engage flat metal plates. The forming shoes roll the flat plates into a "U" shape. The energy required to roll these plates can be changed by varying their thickness.

Abstract: A torsion spring longitudinally rotates a locking bolt when the bolt actung linkage is severed. A woodruff key or the like is upstanding from a surface of the bolt. When the linkage is undamaged, the key slides with the bolt through a slot on the lock frame. When the bolt is rotated by the spring, it is locked in the rotated position by a locking pawl. In the rotated position, the key is out of registry with the slot and the bolt cannot be withdrawn from its extended, locking position. A second embodiment replaces the key with a recess in the bolt into which a locking pawl engages to prevent movement of the locking bolt.

Abstract: Inductive coupling of a high-frequency signal into a cable to be detected d tracked in a seawater medium for sensing the relative position of the cable with respect to capacitor plates. The capacitor plates are positioned so that in conjunction with the cable a differential capacitor is formed. Relative movement of the capacitor plates with respect to the position of the cable is used to unbalance a Wheatstone Bridge circuit. The output signal from the bridge circuit is proportional to their displacement and is used to provide a guidance signal to realign the capacitor plates and the cable.

Abstract: A means for taking roller paths inclination data as part of a weapon system lignment sequence. An accelerometer sensor sends out a DC signal representative of tilt. This signal is amplified and fed to a difference amplifier where a reference signal from a similar channel is subtracted. The difference signal is filtered to remove ship's motion and sent to a scaler circuit for providing an output voltage representing the inclination difference between the two sensors.

Abstract: A portable infrared spectrophotometer for nondestructive testing of coatings, plastics, rubber and other organic construction materials. A single source of infrared light is formed into two beams. One beam is directed to the surface of a sample where it is reflected off the surface of the sample at least four times. The other beam follows a similar path but bounces off a neutral surface. The two beams are combined and focused onto a detector. The output of the detector is proportional to the energy absorbed by the surface of the test sample. A pen recorder is used to provide a graphic display of the spectrum generated.

Abstract: An improvement for a ring laser gyro employs insertion of a wavefront conjugating coupling element inside a laser cavity to reduce the lock-in threshold and to reduce the imbalance between the amplitudes of the opposite direction traveling waves (ODTW) in homogeneously broadened rotating ring lasers.

Abstract: A microprocessor-driven pulsewidth modulated, charge transfer, digital to alog converter for use in a sample data system. During the sample period a capacitor is charged to an error signal value which is the difference between the output of an operational amplifier and an average DC voltage proportional to the sampled digital data.During the hold mode, the charge on the capacitor is transferred to a capacitor of smaller value connected between the input and output of the operational amplifier. This provides an error update during the hold period, permitting the circuit to be used with a computer on a time shared basis.

Abstract: Apparatus for data entry and error detection of digital information. Data ocked into a register undergoes a correlation comparison against a data word already stored within the comparator circuit and a convolution check in which the bits of the data word are compared with each other in a predetermined order. If the input data satisfies these tests, the data word is placed in memory where it may be acted upon by other devices.

Abstract: New energetic salts NF.sub.4 XeF.sub.7 and (NF.sub.4).sub.2 XeF.sub.8 are prepared by reacting NH.sub.4 HF.sub.2 with XeF.sub.6 and exposing NF.sub.4 XeF.sub.7 to blue 4880 .ANG. laser light.

Abstract: New energetic salts NF.sub.4 XeF.sub.7 and (NF.sub.4).sub.2 XeF.sub.8 are prepared by reacting NF.sub.4 HF.sub.2 with XeF.sub.6 and exposing NF.sub.4 XeF.sub.7 to blue 4880.ANG. laser light.

Abstract: A realistic audio-visual effects generator for simulating anti-tank and a-aircraft missile launching. A pyrotechnic cartridge having disc at one end that ruptures and allows the efflux of the products of combustion to exit through a hole in the breech block which is placed at the muzzle end of the firing chamber. Along with the simulated cartridge discharge is electrical circuitry for determining if the cartridge has been properly chambered.The circuitry acts to prohibit firing should it be determined that incorrect installation has occurred. Upon initiation of firing a conventional laser transmitter is actuated for simulating firing of the weapon.

Abstract: Multiaccess memory modules are each connected by means of a bus to a system ddress multiplexer and to a system data multiplexer/demultiplexer. Each module includes a multiaccess memory connected to the system address multiplexer through a component address demultiplexer and a single bus for being addressed. Each multiaccess memory is also connected to the system data multiplexer/demultiplexer through a component data multiplexer/demultiplexer and a single bus for reading or sensing the memory and writing data into the memory. The memory cells of the multiaccess memory components consist of capacitor storage cells, also known as metal oxide silicon (semiconductor) (MOS) capacitors.

Abstract: A double balanced modulator-demodulator consisting of two pairs of field ect transistors. A field effect transistor is connected in series between the source electrodes of each of the field effect transistor pairs. The field effect transistors making up each pair are biased so that they operate in the saturated mode. Each of the transistors connected between the source electrodes of the transistor pairs are biased to operate in the linear mode such that drain current varies linearly with drain voltage. A first input signal is connected across the gate electrodes of the transistor pairs while a second input signal is connected across the gate electrodes of the connecting transistors. Bias for each of the transistor pairs is provided by means of a field effect transistor connected between the source electrodes of the transistor pairs and ground. The gates and source electrodes of transistors forming the bias circuit are connected to ground.

Abstract: A Wide Swath Precision Echo Sounder is provided by means of transmitting grammed acoustic pulses (pings) to insonify a target area and receiving the backscattered energy in two receivers separated vertically. The outputs of each receiver are stored (including phase information) and synthetic aperature outputs are generated. Each space resolution cell will have a phase associated with it for each receiver. Using the interferometer technique, the phase is converted into a depression angle and is combined with the slant range to the particular space cell to provide a numerical measure of the depth and lateral range to the particular spot under consideration.

Abstract: A self-synchronized apparatus for recognizing identifying codes especially n missiles and spacecraft. The apparatus comprises a video quantizer for receiving bipolar video input signals and providing an output of validly timed data to a decode register which is clocked by a free running oscillator. The decode register defines a valid mark as "K" high bits followed by "K" low bits where 2K is the capacity of the decode register. A constant width decoder compares the first K bits in a sequential, pairwise fashion with the inverse of the values of the second K bits. The constant width decoder ANDs the pairwise comparison outputs to insure that "K" high bits are followed by "K" low bits before a "mark" signal is produced. A derivative data buffer receives the "mark" signals. A synchronous counter is coupled to the derivative buffer and the free running oscillator to produce one output pulse for every N oscillator output pulses.

Abstract: A bundle of tubular shaped pellets for a rotating warhead packaged in a wl arrangement for uniform dispersion without coning upon release.

Abstract: An on-line noise figure measurement system for receivers that produces va results whether or not signals are being received. A narrow pulse having a low pulse repetition frequency and low amplitude is injected into the receiver. A processing circuit cyclically measures the output of the RF stage of the receiver to produce a ratio of two signal values. One value is measured in the absence of any signal entering the receiver while the other value is measured with only the pulse signal impressed on the receiver.

Abstract: Apparatus for nebulizing particulate laden undiluted oil samples of varying iscosities suitable for subsequent analysis utilizing atomic spectroscopic principles. Undiluted samples of varying viscosity are heated as they are fed through an inlet tube where the heated oil is fed into a channel groove and brought into contact with a nebulizing gas introduced through an orifice intersecting the channeled groove in which the oil flows.