GB894730A - Improvements in or relating to instrument for and method of aerial measurement of derivatives of the earth's gravity field - Google Patents

Improvements in or relating to instrument for and method of aerial measurement of derivatives of the earth's gravity field

Info

Publication number
GB894730A
GB894730A GB3882459A GB3882459A GB894730A GB 894730 A GB894730 A GB 894730A GB 3882459 A GB3882459 A GB 3882459A GB 3882459 A GB3882459 A GB 3882459A GB 894730 A GB894730 A GB 894730A
Authority
GB
United Kingdom
Prior art keywords
masses
link
opposite ends
earth
vertical
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
GB3882459A
Inventor
Gotthard Victor Arn Gustafsson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3882459A priority Critical patent/GB894730A/en
Publication of GB894730A publication Critical patent/GB894730A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
    • G01V7/16—Measuring gravitational fields or waves; Gravimetric prospecting or detecting specially adapted for use on moving platforms, e.g. ship, aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

894,730. Measuring gravitational forces. LUNDBERG, H. T. F. Nov. 16, 1959, No. 38824/59. Class 97(3). An instrument for measuring derivatives of the earth's gravitational field comprises at least two equal masses 15, 22, Fig. 1, preferably made of gold or silver and having a weight between one and one hundred grams, connected by frameworks to opposite ends of a flexible steel link 17 and also to pivots formed by leaf springs 6, 7, and 8, 9 respectively, so that the tendency of masses 15, 22 to move about the pivots due to the normal force of gravity acts in opposite directions and with equal force on link 17 and is cancelled out, whereas the gradient of the vertical component of the gravitational field causes slight movement of the masses about the axes and may be measured or recorded by an element 25 connected in circuit with a capacitance bridge. The supporting blocks 2, 3 fixed to the wall of an evacuated chamber 1, pivotally support members 10, 12, by means of the horizontal and vertical leaf springs 6, 7, 8, 9. Attached to members 10, 12 are V-shaped frames 14, 19, connecting them to masses 15, 22, and V-shaped frames 16, 21, connecting them to opposite ends of link 17, single bars 18, 20, being provided between masses 15, 22, and opposite ends of link 17. In a modification, Fig. 3, similar masses and frameworks are provided in the upper and lower portions of the chamber 1 connected to opposite ends of links 33, 34, the other ends being connected by V-shaped arms 51, 52, to a member 50 pivoted by leaf springs 53, 54, to a fixed support 28, and also by single bars 48, 49, to a mass 47 which is of the same composition as masses 31, 32 but is twice their weight. The arrangement is such that the effect of the earth's gravitational field and the first derivative of the vertical gravity component are cancelled out, the movement of mass 47 relative to the electrode 56, which measures or records such movement, being due to the second derivative of the vertical gravity component.
GB3882459A 1959-11-16 1959-11-16 Improvements in or relating to instrument for and method of aerial measurement of derivatives of the earth's gravity field Expired GB894730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3882459A GB894730A (en) 1959-11-16 1959-11-16 Improvements in or relating to instrument for and method of aerial measurement of derivatives of the earth's gravity field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3882459A GB894730A (en) 1959-11-16 1959-11-16 Improvements in or relating to instrument for and method of aerial measurement of derivatives of the earth's gravity field

Publications (1)

Publication Number Publication Date
GB894730A true GB894730A (en) 1962-04-26

Family

ID=10405903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3882459A Expired GB894730A (en) 1959-11-16 1959-11-16 Improvements in or relating to instrument for and method of aerial measurement of derivatives of the earth's gravity field

Country Status (1)

Country Link
GB (1) GB894730A (en)

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