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CA1072195A - Helicopter warning system - Google Patents

Helicopter warning system

Info

Publication number
CA1072195A
CA1072195A CA239,974A CA239974A CA1072195A CA 1072195 A CA1072195 A CA 1072195A CA 239974 A CA239974 A CA 239974A CA 1072195 A CA1072195 A CA 1072195A
Authority
CA
Canada
Prior art keywords
helicopter
signal
voltage
voltage signal
altitude
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
Application number
CA239,974A
Other languages
English (en)
French (fr)
Inventor
Louis S. Cotton
Franklin A. Tefft
Ronald E. Barnum
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.)
RTX Corp
Original Assignee
United Technologies 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 US05/559,452 external-priority patent/US3979717A/en
Application filed by United Technologies Corp filed Critical United Technologies Corp
Application granted granted Critical
Publication of CA1072195A publication Critical patent/CA1072195A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • G01C5/005—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels altimeters for aircraft

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Emergency Alarm Devices (AREA)
  • Navigation (AREA)
  • Radar Systems Or Details Thereof (AREA)
CA239,974A 1975-03-18 1975-11-18 Helicopter warning system Expired CA1072195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/559,452 US3979717A (en) 1974-06-03 1975-03-18 Helicopter warning system

Publications (1)

Publication Number Publication Date
CA1072195A true CA1072195A (en) 1980-02-19

Family

ID=24233647

Family Applications (1)

Application Number Title Priority Date Filing Date
CA239,974A Expired CA1072195A (en) 1975-03-18 1975-11-18 Helicopter warning system

Country Status (7)

Country Link
JP (1) JPS5725041B2 (de)
CA (1) CA1072195A (de)
DE (1) DE2549884A1 (de)
FR (1) FR2304515A1 (de)
GB (1) GB1522506A (de)
IL (1) IL48315A (de)
IT (1) IT1048840B (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3228557A1 (de) * 1982-07-30 1984-02-09 Ulrich 8000 München Trampnau Warnvorrichtung fuer hubschrauber
US4769645A (en) * 1983-06-10 1988-09-06 Sundstrand Data Control, Inc. Excessive pitch attitude warning system for rotary wing aircraft
US4818992A (en) * 1983-06-10 1989-04-04 Sundstrand Data Control, Inc. Excessive altitude loss after take-off warning system for rotary wing aircraft
CA1240771A (en) * 1983-06-10 1988-08-16 Noel S. Paterson Warning system for tactical rotary wing aircraft
DE3434758C2 (de) * 1984-09-21 1986-08-07 Ulrich 8000 München Trampnau Landehilfe für Hubschrauber
DE19930559B4 (de) * 1999-07-02 2004-08-12 Airbus Deutschland Gmbh Anordnung und Verfahren zum Schutz eines Flugzeugrumpfes
DE102008058029B3 (de) 2008-11-18 2010-01-07 Deutsches Zentrum für Luft- und Raumfahrt e.V. Hubschrauber
CN113335538A (zh) * 2020-03-02 2021-09-03 中航西飞民用飞机有限责任公司 一种飞机试飞擦尾监控方法
CN113928575A (zh) * 2021-10-20 2022-01-14 成都国营锦江机器厂 一种预防直升机尾部着地的告警方法和装置

Also Published As

Publication number Publication date
IL48315A0 (en) 1975-12-31
JPS5725041B2 (de) 1982-05-27
AU8573375A (en) 1977-04-21
JPS51109699A (de) 1976-09-28
IT1048840B (it) 1980-12-20
FR2304515A1 (fr) 1976-10-15
IL48315A (en) 1978-08-31
DE2549884A1 (de) 1976-09-30
GB1522506A (en) 1978-08-23
FR2304515B1 (de) 1979-01-19

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Legal Events

Date Code Title Description
MKEX Expiry