HIF ANTENNA FOR A HELICOPTER
    1.
    发明专利

    公开(公告)号:SK13495A3

    公开(公告)日:1995-08-09

    申请号:SK13495

    申请日:1993-06-30

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    HF ANTENNA FOR A HELICOPTER
    3.
    发明专利

    公开(公告)号:HU9500195D0

    公开(公告)日:1995-03-28

    申请号:HU9500195

    申请日:1993-06-30

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    HF ANTENNA SYSTEM AND DIRECTIONAL ANTENNA FOR A HELICOPTER

    公开(公告)号:HUT72797A

    公开(公告)日:1996-05-28

    申请号:HU9500195

    申请日:1993-06-30

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    Directional HF antenna for a helicopter

    公开(公告)号:GB2272576A

    公开(公告)日:1994-05-18

    申请号:GB9223580

    申请日:1992-11-11

    Applicant: IBM

    Abstract: Disclosed is a combined directional antenna and rotor blade for a helicopter. The antenna comprises three or more electrically non-conductive rotor blades, 801-805, each having an electrical conductor positioned parallel to the major axis of a respective rotor blade. Two of the electrical conductors on blades 801,805, having angular positions nearer to a predetermined angular position are connected via a connections means e.g. slip rings and brushes to apparatus for transmission or reception of radio waves. The remaining conductors on blades 802-804 may either be connected to the body of the helicopter or supplied with a signal out of phase compared to that supplied to the two electrical conductors. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves. As the rotors rotate, different pairs of blades are selected to maintain the antenna pattern in the predetermined position. The antennae conductors may be formed from the metallic anti-erosion layer on the rotor leading edges or from heater coils embedded in the rotors under that layer (Fig 2 not shown).

    Elapsed time recording device
    6.
    发明专利

    公开(公告)号:GB2269030A

    公开(公告)日:1994-01-26

    申请号:GB9215896

    申请日:1992-07-25

    Applicant: IBM

    Abstract: An elapsed time recording device includes a counter (130) for incrementally advancing a count value from an initial value towards and beyond a threshold in response to successive clock pulses of a clock signal. Control logic (140) enables the counter (130) to incrementally advance the count value in response to a first input (pin 3) and a second input (pin 1) being at or near a first voltage level, and holds the count value in response to the first input (pin 3) being at or near a second voltage level and the second input (pin 1) being at or near the first voltage level. Setting logic (210) sets the count value to a value beyond the threshold in response to the first input (pin 3) and the second input (pin 1) being at or near the second voltage level when the count value is between the initial value and the threshold.

    7.
    发明专利
    未知

    公开(公告)号:FI933478A0

    公开(公告)日:1993-08-05

    申请号:FI933478

    申请日:1993-08-05

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    HF ANTENNA FOR A HELICOPTER
    8.
    发明专利

    公开(公告)号:CA2101867C

    公开(公告)日:1997-09-16

    申请号:CA2101867

    申请日:1993-08-04

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    HF ANTENNA FOR HELICOPTERS
    9.
    发明专利

    公开(公告)号:PL171874B1

    公开(公告)日:1997-06-30

    申请号:PL30712493

    申请日:1993-06-30

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

    Directional HF antenna for a helicopter

    公开(公告)号:AU668176B2

    公开(公告)日:1996-04-26

    申请号:AU4173893

    申请日:1993-07-05

    Applicant: IBM

    Abstract: Disclosed is a combined antenna and helicopter rotor blade 101. The antenna comprises one or more electrically non-conductive rotor blades 101, each having an electrical conductor 210, 310 positioned parallel to the major axis of a respective rotor blade 101. A connection means 410, 412, 510, 521, 620, 623 is provided to connect the antenna to apparatus for the reception or transmission of radio waves which is located in the fuselage 102. Also disclosed is a communications system including apparatus for the transmission or reception of radio waves.

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