GB611047A - Improvements in aircraft navigation instruments - Google Patents
Improvements in aircraft navigation instrumentsInfo
- Publication number
- GB611047A GB611047A GB14561/45A GB1456145A GB611047A GB 611047 A GB611047 A GB 611047A GB 14561/45 A GB14561/45 A GB 14561/45A GB 1456145 A GB1456145 A GB 1456145A GB 611047 A GB611047 A GB 611047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- distance
- craft
- dial
- mask
- scale
- 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
Links
Classifications
-
- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Navigation (AREA)
Abstract
611,047. Electric indicating instruments. SPERRY GYROSCOPE CO., Inc. June 8, 1945, No. 14561. Convention date, June 9, 1944. [Class 40 (i)] [Also in Groups XIX and XL (c)] An aircraft navigation instrument shows on the same dial the craft's distance from a predetermined flight path defined by radio-beam guiding means and also its distance from an independent reference such as the ground. It may consist of a cross-pointer meter M on which pointer 11 co-operates with scale 14 to show the distance of the craft from an overlapping beam or other radio glide path and movable mask 15 indicates, on the same scale 14, the altitude. In an overlapping beam-type receiver, Fig. 2, arranged to operate with beams having characteristic tone modulation, the detector 18 provides signals for the A.V.C. circuit 26 which operates both on the intermediate frequency amplifier 17 and on the audio amplifier 19 to produce a receiver gain proportional to the square of the distance from the transmitter. This renders the output across resistors 25, fed in opposition by the rectifier output of audio filters 21 and 22, substantially proportional to the linear distance of the craft from the equisignal path irrespective of the distance from the transmitter. Two independent receivers are shown in Fig. 2 co-operating with centre zero movements to indicate horizontal and vertical displacement and actuated by glide and approach path beams. The mask 15 co-operating with the vertical displacement scale is controlled by an altitude sensitive pressure capsule 31 through mechanical gearing, Fig. 6; servo mechanism, Fig. 4, or a simple D.C. electric circuit including a d'Arsonval movement, Fig. 3; (Figs. 4 and 6 not shown). A spring-loaded slip clutch, Fig. 5 (not shown), may be used to adjust the mask to the correct reading, for instance on receipt of marker beacon indications at an airport; in the electric circuit control of Fig. 3 electrical adjustment is provided by potentiometer 64 for this purpose. An index 13, representing the craft to the dial scale, is provided at the centre, or on-course, position of the meter M. This index may be attached to a gyroscope by a thin support and be free from the dial so that it will also indicate the craft's banking angle; alternatively, the index may be fixed and the dial and indicators stabilized. It is stated that the dial may be translucent and illuminated from behind with the pointers mounted either in front of or at the back of it, a pointer arm can be substituted for the mask if desired or a cathode-ray tube used to display the indications.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US611047XA | 1944-06-09 | 1944-06-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB611047A true GB611047A (en) | 1948-10-25 |
Family
ID=22033614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB14561/45A Expired GB611047A (en) | 1944-06-09 | 1945-06-08 | Improvements in aircraft navigation instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB611047A (en) |
-
1945
- 1945-06-08 GB GB14561/45A patent/GB611047A/en not_active Expired
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