Honeywell G.m.b.h.

Other

Sperry Corporation

L-3 Communications Corporation

Desi D Stelling

James Roy Troxel

Nicholas J Wilt

Gregory T Stayton

Charles Louis Dosdall

David R Crocker

Robert J Aleksa

David A Zinder

Michael H Curtis

Francis W Larson

Kenneth C Reeves

An improved TCAS indicating system and method for displaying information from the MODE S TRANSPONDER or other subsystem, directly to the TCAS DISPLAY by coding the information and programming the TCAS COMPUTER and the MODE S TRANSPONDER to pass the coded information through to the TCAS DISPLAY.

Method and apparatus for improving performance of aircraft display utilizing TCAS computer and mode S transponder

Airplanes have transponders which receive and transmit signals to communicate information regarding the flight of the airplane. A transponder testing apparatus is integrated into the transponder and verifies that the transponders are operating in accordance to Federal Aviation Regulations.

Testing apparatus for ATC transponder FAR compliance

A system for use with aircraft having a collision avoidance system which employs i) two transponder systems each including two antennas and a selected one of two transponders and ii) a failure warning when a transponder system failure occurs, to permit the aircraft to take off when the failure warning is the result of only one antenna failure.

Method and apparatus for alerting pilot to transponder antenna failure

A capacitor is charged and discharged through switch selectable resistors from regulated DC voltage supplies and clamping diodes to provide the bias signal to control the rise and fall times of the RF output pulse of a PIN diode attenuator. An isolation buffer isolates charging and discharging transients from the bias signal. An adjustable AC gain and adjustable DC offset inverting amplifier provides the isolation buffered signal to a high impedance, very low output AC impedance source for driving the bias input of the PIN diode attenuator. The DC offset is provided by an adjustable regulated voltage source coupled to the inverting amplifier.

Pin diode attenuator RF pulse generator with pulse rise and fall time

A self test avionics equipment is provided for use on an aircraft as part of a traffic collision avoidance system. The equipment has a radio frequency (RF) section and an integral test system. The RF section has an input/output unit, a transmitter and a receiver. The input/output unit has a local oscillator with a directional coupler, a two-way divider connected to the coupler, and an attenuator connected through a modulator to the coupler. The mixer and two-way divider each have an output coupling connector. The attenuator has an output pin switch connector. The transmitter has a modulator/amplifier portion, a spectrum filter connected to the modulator/amplifier portion, and a harmonic filter connected to the spectral filter. The harmonic filter has an ouput coupling connector. The test system comprises three dirctional coupler circuits and a pin switch circuit. The three directional coupler circuits are respectively coupled to the three output coupling connectors, respectively from the mixer, the two-way divider and the harmonic filter. A pin switch circuit connects to the pin switch connector.

Self test avionics equipment

A multiplexing apparatus for outputting selected input signals utilizes input transistors coupled between input sources and diodes. A first set of switching transistors, coupled to the input transistors and the diodes, blocks the outputting of nonselected input signals by applying a predetermined voltage to the anodes of corresponding diodes. A second set of switching transistors, coupled to the input transistors and the diodes, permits the outputting of selected input signals on the emitters of output transistors coupled to the diodes, by applying current to the emitters of corresponding input transistors, and the anodes of corresponding diodes.

High speed solid state multiplexer

A compact base unit for use in conjunction with a microwave oven or the like includes a lower surface for resting upon a counter top, an upper surface for supporting the oven, and a storage area disposed between the upper and lower surfaces. A work surface is slidingly secured to the base unit by a roller track assembly for allowing the work surface to be either retracted within the storage area of the base unit or slidingly extended in front of the base unit. The base unit includes a camming member connected to a push rod for partially advancing the work surface from the storage area when the push rod is actuated. The work surface includes a cookware support molded of silicone rubber to form a series of concentric, stepped depressions for securely supporting various sized cookware utilized in conjunction with the oven.

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Phoenix, AZ, United States of America

Desi D Stelling