FR2426265A2 - Aircraft vertical speed variometer - uses anemometric information to derive reading without need for inertial sensor - Google Patents

Aircraft vertical speed variometer - uses anemometric information to derive reading without need for inertial sensor

Info

Publication number
FR2426265A2
FR2426265A2 FR7814560A FR7814560A FR2426265A2 FR 2426265 A2 FR2426265 A2 FR 2426265A2 FR 7814560 A FR7814560 A FR 7814560A FR 7814560 A FR7814560 A FR 7814560A FR 2426265 A2 FR2426265 A2 FR 2426265A2
Authority
FR
France
Prior art keywords
variometer
aircraft
information
reading
anemometric
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.)
Granted
Application number
FR7814560A
Other languages
French (fr)
Other versions
FR2426265B2 (en
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.)
Societe Francaise dEquipements pour la Navigation Aerienne SFENA SA
Original Assignee
Societe Francaise dEquipements pour la Navigation Aerienne SFENA SA
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 FR7714294A external-priority patent/FR2390735A1/en
Application filed by Societe Francaise dEquipements pour la Navigation Aerienne SFENA SA filed Critical Societe Francaise dEquipements pour la Navigation Aerienne SFENA SA
Priority to FR7814560A priority Critical patent/FR2426265A2/en
Priority to PCT/FR1979/000043 priority patent/WO1979001079A1/en
Priority to EP79400301A priority patent/EP0006773B1/en
Priority to DE7979400301T priority patent/DE2964402D1/en
Priority to JP54500765A priority patent/JPS6156952B2/ja
Priority to CA327,736A priority patent/CA1131782A/en
Publication of FR2426265A2 publication Critical patent/FR2426265A2/en
Application granted granted Critical
Publication of FR2426265B2 publication Critical patent/FR2426265B2/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/62—Devices characterised by the determination or the variation of atmospheric pressure with height to measure the vertical components of speed
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/04—Control of altitude or depth
    • G05D1/06—Rate of change of altitude or depth
    • G05D1/0607—Rate of change of altitude or depth specially adapted for aircraft
    • G05D1/0615—Rate of change of altitude or depth specially adapted for aircraft to counteract a perturbation, e.g. gust of wind

Abstract

The aircraft variometer uses a filtered value of the aircraft vertical speed to which a phase advance is added. The resultant reading is displayed by a needle moving over graduations on the variomater. The phase advance is calculated as a function of the acceleration along the vertical axis of the aircraft (jz 1). This in turn is calculated with respect to the vertical acceleration measured on the aerodyne and on the angle of roll of the aerodyne (0). The variometer uses similar information to that of other devices but does not require an inertial instrument to supply this. The information used is that which is available in an aircraft not using an inertial instrument.
FR7814560A 1977-05-10 1978-05-17 Aircraft vertical speed variometer - uses anemometric information to derive reading without need for inertial sensor Granted FR2426265A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7814560A FR2426265A2 (en) 1977-05-10 1978-05-17 Aircraft vertical speed variometer - uses anemometric information to derive reading without need for inertial sensor
PCT/FR1979/000043 WO1979001079A1 (en) 1978-05-17 1979-05-14 Improved variometer
EP79400301A EP0006773B1 (en) 1978-05-17 1979-05-14 Improved variometer
DE7979400301T DE2964402D1 (en) 1978-05-17 1979-05-14 IMPROVED VARIOMETER
JP54500765A JPS6156952B2 (en) 1978-05-17 1979-05-14
CA327,736A CA1131782A (en) 1978-05-17 1979-05-16 Variometer for use in an aerodyne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7714294A FR2390735A1 (en) 1977-05-10 1977-05-10 PERFECTED VARIOMETER
FR7814560A FR2426265A2 (en) 1977-05-10 1978-05-17 Aircraft vertical speed variometer - uses anemometric information to derive reading without need for inertial sensor

Publications (2)

Publication Number Publication Date
FR2426265A2 true FR2426265A2 (en) 1979-12-14
FR2426265B2 FR2426265B2 (en) 1982-12-03

Family

ID=26220014

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7814560A Granted FR2426265A2 (en) 1977-05-10 1978-05-17 Aircraft vertical speed variometer - uses anemometric information to derive reading without need for inertial sensor

Country Status (1)

Country Link
FR (1) FR2426265A2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB995625A (en) * 1960-09-30 1965-06-23 Sperry Rand Corp Aircraft flight path angle computer
US3296422A (en) * 1962-02-12 1967-01-03 Honeywell Inc Apparatus for computing true vertical position, velocity and acceleration for aircraft

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB995625A (en) * 1960-09-30 1965-06-23 Sperry Rand Corp Aircraft flight path angle computer
US3296422A (en) * 1962-02-12 1967-01-03 Honeywell Inc Apparatus for computing true vertical position, velocity and acceleration for aircraft

Also Published As

Publication number Publication date
FR2426265B2 (en) 1982-12-03

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