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DUAL CYCLE AIRCRAFT TURBINE ENGINE

NASA Case No. LAR-11310-1

Canada, France, Germany,
Great Britain, Italy,
Japan

Address inquiries to:
Langley Research Center
Attn: Patent Counsel
Mail Code: 456
Langley Station
Hampton, VA 23665
U.S.A.

(Corresponding U.S. Patent - Application Pending)

This invention describes a method and apparatus applicable to jet engines for improving operating efficiency over broad ranges of flight conditions and for reducing engine noise output in take-off and landing by controlling the airflow entering and exiting the engines. A turbojet engine apparatus is described which operates efficiently at both subsonic and supersonic speeds and a method is described which enables a turbofan with an associated satellite turbojet or turbofan to operate more efficiently at both subsonic and supersonic speeds. In both cases, take-off and landing noise is reduced substantially. The apparatus consists essentially of arranging for two separate portions of an engine to act upon one airstream or, alternately, to operate on independent airstreams.

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AMPLITUDE STEERED ANTENNA ARRAY

NASA Case No. GSC-11446

Canada, France, Germany,
Great Britain, Japan,
Netherlands

Address inquiries to:
Goddard Space Flight Center
Attn: Patent Counsel
Mail Code: 204
Greenbelt, MD 20771
U.S.A.

(Corresponding to U.S. Patent No. 3,806,932)

A spin stabilized satellite has an electronically despun antenna array comprising a multiplicity of peripheral antenna elements. A high gain energy beam is established by connecting a suitable fraction or array of the elements in phase. The beam is steered or caused to scan by switching elements in sequence into one end of the array as elements at the other end of the array are switched out. The switching transients normally associated with such steering are avoided by an amplitude control system. Instead of abruptly switching from one element to the next, a fixed value of power is gradually transferred from the element at the trailing edge of the array to the element next to the leading edge. Thus as the satellite rotates, power is reduced on one element and power is increased on the other element thereby avoiding switching transients and maintaining constant total array power at all times.

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RECORDER/PROCESSOR APPARATUS

NASA Case No. GSC-11553

Japan

Address inquiries to:
Goddard Space Flight Center
Attn: Patent Counsel
Mail Code: 204
Greenbelt, MD 20771
U.S.A.

(Corresponding to U.S. Patent No. 3,781,902]

This is an apparatus for recording and thermally processing data. A laser beam, modulated by a video signal generates a raster so as to expose a latent image of the input information on a storage medium. A rotating drum in conjunction with an incrementally driven lens carriage associated with the laser optical system provides the raster generation. The drum is automatically loaded with the storage medium from a supply means and automatically unloaded to a thermal processor upon completion of recording. The latent image is processed by the controlled application of heat so as to produce an actual displayable image corresponding to the data input at the output of the apparatus.

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MILLIMETER WAVE PUMPED PARAMETRIC AMPLIFIER

NASA Case No. GSC-11617

Canada, France, Germany,
Great Britain, Japan,
Netherlands

Address inquiries to:
Goddard Space Flight Center
Attn: Patent Counsel
Mail Code: 204
Greenbelt, MD 20771
U.S.A.

(Corresponding U.S. Patent Application Pending)

The present invention is directed to a new parametric amplifier structure which exhibits a large gain-bandwidth product and low noise characteristics without cryogenic cooling. In addition, higher idler frequencies are attained and which are easily adjustable in resonant frequency. The amplifier includes a stacked pair of uncased varactor diode chips within a waveguide channel, which chips are stacked in a predetermined direction.

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ELECTRON BEAM CONTROLLER

NASA Case No. LEW-11617-1

Australia, Canada, Belgium,
France, Great Britain,
Germany, Japan, Italy,
Netherlands

Address inquiries to:
Lewis Research Center
Attn: Patent Counsel
Mail Code: 500-113
21000 Brook park R
Cleveland, OH 44135
U.S.A.

(Corresponding to U.S. Patent No. 3, 764,850)

A magnet applies a magnetic field of predetermined intensity and shape to a spent electron beam over an axial distance having a predetermined relationship to the frequency of operation of a utilization device which has extracted energy from the electron beam and at a predetermined axial distance after the beam has left the magnetic field of the utilization device and entered the beam expansion region and beam stabilization region. The stabilizing magnetic field is terminated abruptly before the electron beam enters a collector apparatus.

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