GB1355894A - Method and apparatus for detecting the position of an object - Google Patents

Method and apparatus for detecting the position of an object

Info

Publication number
GB1355894A
GB1355894A GB4766672A GB1355894DA GB1355894A GB 1355894 A GB1355894 A GB 1355894A GB 4766672 A GB4766672 A GB 4766672A GB 1355894D A GB1355894D A GB 1355894DA GB 1355894 A GB1355894 A GB 1355894A
Authority
GB
United Kingdom
Prior art keywords
hydrofoil
transducer
transmitted
output
oscillator
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
GB4766672A
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.)
Boeing Co
Original Assignee
Boeing Co
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
Application filed by Boeing Co filed Critical Boeing Co
Publication of GB1355894A publication Critical patent/GB1355894A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

1355894 Ultrasonic distance measurement BOEING CO 16 Oct 1972 47666/72 Heading H4D A method of detecting the position of a liquidgas interface comprises measuring the transmission time of an ultrasonic signal transmitted from a point in the gas to a point in the liquid. Although it is stated that the invention may be used in any liquid level measurement, the main embodiment describes a system for controlling the submerged depth of a hydrofoil on an ocean going hydrofoil vessel. A continuous wave signal is transmitted by transducer 16 on the hull to a receiving transducer 18 on the hydrofoil. The received signal is fed to the input of gated amplifier 46 whose other input is derived from frequency division of the oscillator 40 output. Difference in phase between transmitted and received signals controls the frequency of oscillator 40, whose output represents the transit time and which is fed to discriminator 54 and display 26. The discriminator provides an output to a control system which adjusts the foil attitude thus controlling its depth. The beam width of transducer 16 is sufficient to ensure that for an average ocean wave (slope 16 degrees) the extremities of the beam are incident at the critical angle, thus ensuring that the beam ensonifies the whole underwater volume (Figs. 2- 4, not shown). Display 26 may be x-y recorder or a C.R.T.
GB4766672A 1972-10-16 1972-10-16 Method and apparatus for detecting the position of an object Expired GB1355894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4766672 1972-10-16

Publications (1)

Publication Number Publication Date
GB1355894A true GB1355894A (en) 1974-06-05

Family

ID=10445839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4766672A Expired GB1355894A (en) 1972-10-16 1972-10-16 Method and apparatus for detecting the position of an object

Country Status (1)

Country Link
GB (1) GB1355894A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495784A1 (en) * 1980-12-10 1982-06-11 Chevron Res APPARATUS AND METHOD FOR DETERMINING THE POSITION OF A MARINE FLUTE TRAILED BY A SHIP
FR2563800A1 (en) * 1984-05-07 1985-11-08 Rusev Simeon Object provided with hydrodynamic lift wings
WO1993011405A1 (en) * 1991-11-29 1993-06-10 Dmitry Gennadievich Tretjyakov Displacement transducer
CN102829842A (en) * 2012-08-02 2012-12-19 中国科学院水利部成都山地灾害与环境研究所 Device and method for measuring mud depth of debris flow

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495784A1 (en) * 1980-12-10 1982-06-11 Chevron Res APPARATUS AND METHOD FOR DETERMINING THE POSITION OF A MARINE FLUTE TRAILED BY A SHIP
FR2563800A1 (en) * 1984-05-07 1985-11-08 Rusev Simeon Object provided with hydrodynamic lift wings
WO1993011405A1 (en) * 1991-11-29 1993-06-10 Dmitry Gennadievich Tretjyakov Displacement transducer
CN102829842A (en) * 2012-08-02 2012-12-19 中国科学院水利部成都山地灾害与环境研究所 Device and method for measuring mud depth of debris flow
CN102829842B (en) * 2012-08-02 2014-10-01 中国科学院水利部成都山地灾害与环境研究所 Device and method for measuring mud depth of debris flow

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years