GB625917A - Improvements in or relating to navigation devices - Google Patents

Improvements in or relating to navigation devices

Info

Publication number
GB625917A
GB625917A GB29834/46A GB2983446A GB625917A GB 625917 A GB625917 A GB 625917A GB 29834/46 A GB29834/46 A GB 29834/46A GB 2983446 A GB2983446 A GB 2983446A GB 625917 A GB625917 A GB 625917A
Authority
GB
United Kingdom
Prior art keywords
displacement
signals
valves
condensers
craft
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
GB29834/46A
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.)
Sperry Gyroscope Co Inc
Original Assignee
Sperry Gyroscope Co Inc
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 Sperry Gyroscope Co Inc filed Critical Sperry Gyroscope Co Inc
Publication of GB625917A publication Critical patent/GB625917A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
    • G05D1/02Control of position or course in two dimensions
    • G05D1/0202Control of position or course in two dimensions specially adapted to aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Navigation (AREA)
  • Gyroscopes (AREA)

Abstract

625,917. Radio navigation. SPERRY GYROSCOPE CO., Inc. Oct. 7, 1946, No. 29834. Convention date, Aug. 7, 1943. [Class 40 (vii)] In order to enable a craft to follow an asymptotic approach to the equi-signal courseline defined by an overlapping-beam radio beacon, the receiver carried by the craft comprises an indicator responsive to both the displacement of the craft from the course-line and to the rate of change thereof, so that by maintaining the indicator at a zero indication the desired approach will be made. The beacon may radiate signals of either the complementary or simultaneous kind and may be used to define a course in either the horizontal or vertical plane. Fig. 3 illustrates a system wherein the two lobes are modulated at different audio-frequencies. The audio-frequencies are separated at the receiver, which is similar to that described in Specification 550,660 as far as the audio-frequency stage, and applied to respective transformers 12 and 13. The signals at tappings 17 and 18, whose difference is a measure of the displacement of the craft from the course, are applied to the grids of rectifying valves 19 and 21. These signals are also separately rectified by double-diode 24 and applied through differentiating condensers to the grids of valves 22 and 23 which have common cathode circuits with valves 19 and 21 respectively. The outputs from these cathode circuits are applied differentially to the meter M which consequently records a signal compounded from signals proportional to the displacement and its rate of change. The sharpness of the asymptotic approach may be controlled by adjusting the potentiometer 27 to adjust the relative amplitudes of the displacement and rate of change signals. In an alternative circuit, Fig. 4, the outputs of the transformers 12 and 13 are rectified at 33 and 34 and applied by resistors 39 and 41 respectively and condensers 42 and 43 respectively to grids of valves 38. The couplings via the resistors provide a component proportional to the displacement and those via the condensers provide a component proportional to its rate of change, so that the signal applied to the meter M is a composite signal, as before. The sharpness of the approach path may be varied by varying the resistors 39 and 41 and by switching in or out additional condensers 47 and 48.
GB29834/46A 1943-08-07 1946-10-07 Improvements in or relating to navigation devices Expired GB625917A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US625917XA 1943-08-07 1943-08-07

Publications (1)

Publication Number Publication Date
GB625917A true GB625917A (en) 1949-07-06

Family

ID=22043489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29834/46A Expired GB625917A (en) 1943-08-07 1946-10-07 Improvements in or relating to navigation devices

Country Status (1)

Country Link
GB (1) GB625917A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099361B (en) * 1952-08-29 1961-02-09 Wiesing Ab Device for deriving control commands to bring an aircraft to a beacon
DE1106609B (en) * 1954-09-23 1961-05-10 Sperry Rand Corp Aircraft landing facility

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099361B (en) * 1952-08-29 1961-02-09 Wiesing Ab Device for deriving control commands to bring an aircraft to a beacon
DE1106609B (en) * 1954-09-23 1961-05-10 Sperry Rand Corp Aircraft landing facility

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