Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 5426435 | Open loop proximity detector An open loop proximity detector is contemplated which receives a Doppler frequency when a target is first detected, and predicts a specific fuzing Doppler frequency. The detector continues to transmit and receive electromagnetic waves and sends a detonati... | 06/20/1995 |
| 5285208 | Power management system for a worldwide multiple satellite communications system A power management system for a worldwide multiple satellite system having satellites positioned latitudinally in a polar orbiting constellation, each satellite having a plurality of antenna beams, each beam having a given area of coverage or "cell," the ... | 02/08/1994 |
| 5142985 | Optical detection device An advanced optical sensor for determining the stand-off distance from a trajecting container to a target utilizes various checks and filters to eliminate false detonations caused by glint and counter-measures. The sensor is comprised of a transmitter, a ... | 09/01/1992 |
| 5121413 | Digital pulse processor for determining leading and trailing time-of-arrival A Digital Pulse Processor (DPP) designed to accept pulsed inputs and produce digital pulse descriptor word (PDW) outputs accepts pulsed signals from three adjacent channelized inputs. The DPP then derives a measurement of pulse amplitude from the peak val... | 06/09/1992 |
| 5119504 | Position aided subscriber unit for a satellite cellular system A subscriber unit for communicating with a satellite communication system. This subscriber unit receives and transmits digital data from satellites of a satellite communication system. In addition, the subscriber unit self-determines its own position and ... | 06/02/1992 |
| 5087895 | Miniature microstrip/cavity oscillator A miniature microstrip/cavity oscillator which is mechanically tunable over a wide range of microwave frequencies and maintains high frequency stability over changes in temperature. The oscillator consists of a RF (resonant frequency) determining element,... | 02/11/1992 |
| 5083257 | Bit plane partitioning for graphic displays A bit plane partitioned graphics display system prioritizes large numbers of classes of information prior to relaying the information to the color lookup table. This allows the color lookup table to process only 12 or less bits of information at a time. T... | 01/21/1992 |
| 5065428 | Secure mode answering machine A secure answering machine allows both secure and non-secure information to be recorded by incorporating a digital signal processor (DSP) and both a secure and non-secure RAM. The secure RAM is powered entirely by battery. The battery is then connected to... | 11/12/1991 |
| 5052303 | Interlocked release mechanism with timed, sequential release steps An interlocking release mechanism uses a toothed pinion engaging a toothed rack or gear. The teeth of the pinion are removed in certain areas so as a lock arm, when moved axially from in alignment with a tooth segment to where the tooth has been removed, ... | 10/01/1991 |
| 5044201 | Double-integrating silicon acceleration sensing device A double integrating silicon acceleration sensing device which is solid state and micromachined measures the acceleration of an object and determines the distance travelled by that object through its trajectory. The device comprises a hermetically sealed ... | 09/03/1991 |
| 5034793 | Time delay modulation and correction device An acoustic charge transport device (ACT) alters the intersection of an associated surface acoustic wave (SAW) electric potential with the static depletion potential and the input contact potential to correct the timing variations inherent in conventional... | 07/23/1991 |
| 5033383 | No stored energy safe and arm device A safe and arm device for a fuze wherein the safe and arm device does not require stored energy and is activated by a solenoid operating on a pawl mechanism. The pawl in turn pulls a plunger against a detonating chamber in a ratchet-like manner. As the pl... | 07/23/1991 |
| 5028831 | SAW reflectionless quarter-wavelength transducers A SAW transducer eliminates mechanical energy reflections by using one-quarter wavelength electrodes spaced at predetermined intervals. Dummy electrodes are shifted one-quarter wavelength to cancel energy reflections in the active electrodes. A pair of du... | 07/02/1991 |
| 5027086 | Dielectric resonator oscillator power combiner A microwave oscillator/power combiner incorporates two microstrip transmission lines, each coupled electromagnetically to an output transmission line. Each of the microstrip transmission lines incorporate active diodes such as IMPATT or GUNN diodes which ... | 06/25/1991 |
| 5023576 | Broadband 180 degree hybrid A broadband 180 degree hybrid having lumped or semi-lumped elements is comprised of a network of low and high pass filters. A 180 degree phase differential is obtained by splitting an input signal from a first input. A first portion of the split signal is... | 06/11/1991 |
| 5021799 | High permitivity dielectric microstrip dipole antenna A miniature microstrip dipole antenna is constructed on a high permitivity dielectric substrate for compactibility with microwave monolithic integrated circuit (MMIC) technology. The antenna comprises two dipole arms coupled to opposite faces of the subst... | 06/04/1991 |
| 5008836 | Method of recognizing selected objects A method of recognizing a selected object during a fly-over including periodically making range measurements to the ground at a predetermined angle, noting range rate of change from adjacent range measurements, determining the presence of an object, its h... | 04/16/1991 |
