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4451829 Circularly polarized antenna formed of a slotted cylindrical dipole  
An antenna, particularly suitable for two-way communication between a communication satellite and an aircraft in flight, having a circular polarization response, comprising a T-matched dipole...
4450451 Gimbal assembly for monopulse radar antenna  
A gimbal assembly for a monopulse antenna gyroscopically stabilized on a moving vehicle is shown to comprise a tripartite bearing having a fixed spherical inner section, an annular central...
4412221 Antenna system for airborne transceiver providing quasi continuous reception and transmission free from shadowing by aircraft structure  
One quarter wavelength monopoles on the top and bottom centerline of the aircraft fuselage provide hemispherical coverage for an airborne transceiver thereby reducing shadowing during maneuver. A...
4408209 Orientable beam antenna for telecommunications satellite  
The orientable beam antenna comprises a fixed source, a fixed first reflector and a mobile reflector. The axis of the source is offset with respect to the focal aspect of the fixed reflector, and...
4392139 Aircraft television antenna receiving system  
An omnidirectional VHF television antenna system for an aircraft which includes one pair of slot antennas on each side of the aircraft vertical fin. Each pair of antennas includes a VHF high band...
4380012 Radome for aircraft  
A non-rotatable radar antenna installation for aircraft for providing 360° azimuthal scanning, which includes a generally triangular radome carried by the aircraft, and three substantially planar...
4347516 Rectangular beam shaping antenna employing microstrip radiators  
To provide improved performance in a microwave antenna, particularly for use in a Doppler navigation system, rectangular arrays obtained from truncated slanted arrays are used to obtain beam...
4346386 Rotating and translating radar antenna drive system  
A mount and mechanism for imparting scan motion to a radar antenna useful in locations where obstructions forward of the antenna limit the field of view of the radar. The mount includes a carriage...
4343000 Aircraft self-protection radar  
Reflector means is placed in the path of the energy beam of a radar to incept a peripheral portion of the beam and divert sufficient radar waves to cover a portion of the field-of-view in the...
4336543 Electronically scanned aircraft antenna system having a linear array of yagi elements  
An electronically scanned antenna system having a linear array of endfire elements. The endfire elements are laterally spaced between about 0.3 λ to 0.9 λ apart, preferably about 0.55 λ apart, to...
4325141 Intercontinental air to air communications by an optimum mode  
A low frequency air-to-air and air-to-ground communication system is described. The propagation characteristics of low frequencies and very low frequencies are such that less signal attenuation is...
4305078 Multifrequency series-fed edge slot antenna  
A single input multifrequency antenna is disclosed which comprises a plurty of radiating elements connected in series. The device may comprise multiple conformal edge slot radiators.
4292861 Earth self-orienting apparatus  
A rotor mounting a sensor to be inserted into the earth is rotatably mounted within and locked to a cylindrical housing. The latter may be dropped to the earth and may come to rest in any...
4249174 Aircraft weather radar system  
A low cost airborne weather radar system suitable for mounting in the wing of a single engine aircraft. The radar antenna is a truncated parabolic dish. The receiver/transmitter, relative to...
4207841 Dipole antenna for proximity fuze  
1. In combination with a bomb or similar projectile intended to move rapi through the air and having aerodynamic characteristics such that the longitudinal axis of said projectile will be...
4188631 Linkage apparatus for synchronizing aircraft door movements with the deployment of a door-enclosed antenna  
An extendable infra-red antenna is carried in a bay portion of the aircraft ormally closed by laterally-swinging, clam-shell doors. Separate, unconnected linkage assemblies driven by a common...
4180818 Doppler navigation microstrip slanted antenna  
In order to provide improved performance in a printed antenna, particularly for use in a Doppler navigation system, two pairs of linear arrays slanted at 45° are utilized to obtain a beam shape...
4178596 Radar augmentation system for airborne target  
An active radar augmentation system in a drone target aircraft, for the purpose of decreasing damage to the target. The system includes a receiving antenna in the nose, an amplifier, and a rear...
4134119 Antenna test shield  
Apparatus for transferring electromagnetic signal energy between a signal circuit and an antenna that extends outwardly from a ground-plane surface includes a conductive shield that substantially...
4132993 Antenna element  
An antenna element for use in the nose section of a small missile is disclosed. The antenna element includes a ground plane and a pair of end fed radiating elements, the free ends thereof being...
4110751 Very thin (wrap-around) conformal antenna  
A new type of thin-walled dielectric loaded antenna which is capable of fh mounting to almost any surface contour. This very thin wrap-around antenna consists essentially of 2 modified...
4057104 Temperature controlled airborne electronic assembly  
A streamlined electronic-component-containing pod is mounted on the exterior of a military aircraft in subjection to the airflow past the aircraft during flight. An evaporator in the pod is close...
4051480 Conformal edge-slot radiators  
A dielectric loaded edge-slot radiator whose exterior dimensions are adjuble to allow flush mounting on cylindrical and conical bodies which can be frequency tuned either electrically or...
4006480 Antenna window assembly for ablative heat shields  
An antenna window for ablative type heat shield where the forward edge of the window is below the level of the heat shield and the trailing edge extends above the surface of the heat shield...
3997900 Four beam printed antenna for Doopler application  
A novel approach for generating four symmetrically located beams from a printed antenna using a corporate feed system is described. One approach used to generate four low side lobe beams utilizes...
3984837 Rotatable and tiltable radome with independent scan and tilt antenna  
A low drag gyro stabilized radome for an aircraft. The radome is pivoted roll and pitch by a universal joint between the radome and a pylon rigidly attached to the aircraft thereby enabling the...
3978410 Aircraft-mounted crash-activated transmitter device  
An aircraft-crash location transmitter tuned to transmit on standard emergency frequencies is shock mounted in a sealed circular case retained in a recess atop the tail of an aircraft by means of...
3977004 Aircraft VLF/LF/MF window antenna receiving system  
Apparatus for receiving the horizontal and vertical electric field compons of incoming VLF, LF, and MF (10 KHz to 3000 kHz) signals that is easily portable and installed within minutes aboard...
3972045 Aircraft with television system  
Apparatus for transporting and entertaining passengers comprise an aircraft, a rotary supporting structure, equipment connected to the aircraft and to the rotary supporting structure for mounting...
3953857 AIRBORNE MULTI-MODE RADIATING AND RECEIVING SYSTEM  
An improved directional antenna for use in an airborne vehicle is shown. The contemplated antenna includes a planar phased array of antenna elements mechanically rotatable about an axis of...
3925783 Radome heat shield  
The radome heat shield relates to insulating a temperature sensitive ante from the heat emanating from the inner wall of an airborne radome. The heat shield consists of thin layers of reflecting...
3906507 Combination glideslope/localizer antenna for aircraft  
A combination glideslope/localizer antenna suitable for mounting on the forward bulkhead in the radome area of an aircraft provides two suitably isolated connectors for receiving glideslope and...
3896446 Radar mounted on helicopter  
A radar antenna is fixedly disposed within a radar dome secured to a helicopter on the rotor head so as to have a maximum directive gain between selected adjacent two of blades radially extending...
3893122 Wave guide antenna horn  
5. An antenna horn for a radar-controlled device comprising a streamlined body having surfaces defining an aperture extending through said body, a composite wave guide disposed in the aperture in...
3866231 Satellite transmitter of ULF electromagnetic waves  
A natural gigantic loop antenna is created by the earth's magnetosphere in ombination with a satellite having long insulated conductors ending in a metallic plate. The satellite may be equipped...
3864689 HYBRID SCAN ANTENNA  
A hybrid antenna system comprises two or more wave guide antenna sections which are physically separated and separately fed with radiant energy from a single source by dividing up energy from the...
3860930 RADAR ANTENNA SCAN APPARATUS  
A radar antenna scan drive employs a planetary type drive. An RF antenna is fixed to rotate with a planet gear while the planet rotates around a sun gear. The swept volume of the RF antenna, as it...
3846798 INTEGRATED WINDOW, ANTENNA, AND WAVEGUIDE WITH PLASMA ALLEVIATION  
A method and an apparatus for cooling an electromagnetic wave permeable antenna window, and for alleviating a boundary layer of dense plasma, particularly for use in high performance reentry space...
3824598 APPARATUS FOR MAINTAINING ELECTRONIC EQUIPMENT IN AN AIRPLANE BELOW A CERTAIN TEMPERATURE  
An apparatus for maintaining electronic equipment in an airplane below a certain temperature. The apparatus comprises an elongate cylindrical container with pointed end sections removably mounted...
3823402 ANTENNA DEPLOYED FROM AIRCRAFT TO CONTACT A BODY OF WATER FOR LENGTH REDUCTION  
The method and apparatus is disclosed for radiating low-frequency radio waves. In particular, an extended length of a vertical radiator or antenna is suspended from a suitable aircraft, such as a...
3811127 ANTENNA FOR AIRBORNE SATELLITE COMMUNICATIONS  
A broadband VHF/UHF antenna exhibiting a hemispherical radiation pattern comprising four orthogonally positioned radiating elements and means for feeding the elements in phase quadrature. Each...
3803614 HELICOPTER CARRIED SCANNING ANTENNA  
A helicopter is provided with a scanning device mounted beneath a lower surface of a fuselage for movement between an extended operational position and a retracted non-operational position...
3789412 AIRCRAFT ANTENNA BALANCE TECHNIQUES  
Antenna balance and coupling circuitry for providing rejection of radio fuency signals produced by airframe currents flowing in a vertically polarized dipole antenna installed on an airborne...
3766562 CONTROL OF ELECTRON DENSITY ENVELOPING HYPERSONIC VEHICLES  
A device wherein a portion of an electrical conducting interface of a vehe in hypersonic flight is electrically biased relative to the surrounding plasma to cause currents to pass thru the plasma....
3766561 HIGH RESOLUTION AIRCRAFT RADAR ANTENNA  
A high resolution aircraft radar antenna having a pair of long alternately ctivated radio frequency (RF) antenna arrays in back-to-back relation within an elliptical cross-sectional boom of good...
3754264 RADIO DIRECTION FINDING APPARATUS  
Radio direction finding apparatus for rotary wing aircraft includes an antenna, a radio receiver and modulation detection circuits for detecting a modulation component in the receiver output due...
3754267 COLLAPSIBLE RADOME AND ANTENNA SYSTEM  
A collapsible radome and antenna system in the form of a self-contained pod which is attached to an aircraft by quick disconnect means. In collapsed position the radome is a shallow cylindrical...
3747110 ANTENNA ALIGNMENT DEVICE  
A ring-shaped frangible member for maintaining the movable internal antenna dish" of a guided missile in a boresighted position and thus prevent it from becoming misaligned during storage and...
3742358 TETHERED AIRBORNE COMMUNICATIONS AND INFORMATION TRANSFER SYSTEM  
A tethered balloon including means for controlling the height thereof is utilized as an airborne platform for transmitting and receiving apparatus including a multiple antenna assembly. The...
3739385 MECHANICALLY SWEPT RADAR ANTENNA FOR USE WITH AN AIRCRAFT LANDING MONITOR SYSTEM  
An radar antenna for use in an aircraft landing monitor which includes an elongated antenna housing mounted on a vertical pivot for horizontal oscillation in the nose of an aircraft. An elongated...