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GB2343956B - In-flight aid for detecting power lines - Google Patents

In-flight aid for detecting power lines

Info

Publication number
GB2343956B
GB2343956B GB9920684A GB9920684A GB2343956B GB 2343956 B GB2343956 B GB 2343956B GB 9920684 A GB9920684 A GB 9920684A GB 9920684 A GB9920684 A GB 9920684A GB 2343956 B GB2343956 B GB 2343956B
Authority
GB
United Kingdom
Prior art keywords
power lines
detecting power
flight aid
flight
aid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB9920684A
Other versions
GB2343956A (en
GB9920684D0 (en
Inventor
Leonard M Greene
Randall A Greene
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safe Flight Instrument Co
Safe Flight Instrument Corp
Original Assignee
Safe Flight Instrument Co
Safe Flight Instrument Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/156,384 external-priority patent/US6002348A/en
Application filed by Safe Flight Instrument Co, Safe Flight Instrument Corp filed Critical Safe Flight Instrument Co
Publication of GB9920684D0 publication Critical patent/GB9920684D0/en
Publication of GB2343956A publication Critical patent/GB2343956A/en
Application granted granted Critical
Publication of GB2343956B publication Critical patent/GB2343956B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/006—Safety devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Emergency Alarm Devices (AREA)
GB9920684A 1998-09-18 1999-09-02 In-flight aid for detecting power lines Expired - Lifetime GB2343956B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/156,384 US6002348A (en) 1998-05-13 1998-09-18 Pilot's aid for detecting power lines

Publications (3)

Publication Number Publication Date
GB9920684D0 GB9920684D0 (en) 1999-11-03
GB2343956A GB2343956A (en) 2000-05-24
GB2343956B true GB2343956B (en) 2003-09-03

Family

ID=22559352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9920684A Expired - Lifetime GB2343956B (en) 1998-09-18 1999-09-02 In-flight aid for detecting power lines

Country Status (2)

Country Link
FR (1) FR2784754B1 (en)
GB (1) GB2343956B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050113985A1 (en) * 2003-11-26 2005-05-26 Safe Flight Instrument Corporation Obstacle avoidance system for rotary wing aircraft
CA2627169C (en) * 2005-10-19 2015-05-19 Power Survey Company Apparatus and method for monitoring and controlling detection of stray voltage anomalies
FR2914446B1 (en) * 2007-03-30 2009-07-10 Airbus France Sas METHOD AND DEVICE FOR MODIFYING THE SOUND VOLUME OF AN AUDIO WARNING SIGNAL ON BOARD AN AIRCRAFT

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1605156A (en) * 1976-07-12 1982-06-09 Secr Defence Method and apparatus for warning aircraft of the presence and direction of electrical transmission lines
GB1605169A (en) * 1977-02-01 1982-09-08 Sperry Ltd System and method of detecting the proximity of an alternating magnetic field
FR2624982A1 (en) * 1987-12-22 1989-06-23 Catu Ets Electric field proximity detection device
WO1992021077A1 (en) * 1991-05-22 1992-11-26 Gec-Marconi Limited Aircraft terrain and obstacle avoidance systems
US5351032A (en) * 1993-02-19 1994-09-27 Regents Of The University Of California Power line detection system
WO1996023235A1 (en) * 1995-01-27 1996-08-01 Vms Industries Pty. Ltd. Cable detection apparatus
JPH10221108A (en) * 1996-10-11 1998-08-21 Unknown Navigation information device and control method for helicopter navigation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362992A (en) * 1978-01-30 1982-12-07 Sperry Limited System and method of detecting the proximity of an alternating magnetic field
US5252912A (en) * 1989-06-28 1993-10-12 William E. Merritt System for warning aircraft pilot of potential impact with a power line and generating time-to-time impact signal
WO1991000525A1 (en) * 1989-06-28 1991-01-10 Merritt William E Electric field detection system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1605156A (en) * 1976-07-12 1982-06-09 Secr Defence Method and apparatus for warning aircraft of the presence and direction of electrical transmission lines
GB1605169A (en) * 1977-02-01 1982-09-08 Sperry Ltd System and method of detecting the proximity of an alternating magnetic field
FR2624982A1 (en) * 1987-12-22 1989-06-23 Catu Ets Electric field proximity detection device
WO1992021077A1 (en) * 1991-05-22 1992-11-26 Gec-Marconi Limited Aircraft terrain and obstacle avoidance systems
US5351032A (en) * 1993-02-19 1994-09-27 Regents Of The University Of California Power line detection system
WO1996023235A1 (en) * 1995-01-27 1996-08-01 Vms Industries Pty. Ltd. Cable detection apparatus
JPH10221108A (en) * 1996-10-11 1998-08-21 Unknown Navigation information device and control method for helicopter navigation

Also Published As

Publication number Publication date
FR2784754B1 (en) 2004-11-05
GB2343956A (en) 2000-05-24
GB9920684D0 (en) 1999-11-03
FR2784754A1 (en) 2000-04-21

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20190901