GB164765A - Improvements in, or relating to, gunnery computing and predicting apparatus - Google Patents
Improvements in, or relating to, gunnery computing and predicting apparatusInfo
- Publication number
- GB164765A GB164765A GB811019A GB811019A GB164765A GB 164765 A GB164765 A GB 164765A GB 811019 A GB811019 A GB 811019A GB 811019 A GB811019 A GB 811019A GB 164765 A GB164765 A GB 164765A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rheostats
- relays
- target
- rheostat
- proportional
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
- G06G7/80—Analogue computers for specific processes, systems or devices, e.g. simulators for gunlaying; for bomb aiming; for guiding missiles
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Multiple Motors (AREA)
- Adjustable Resistors (AREA)
- Toys (AREA)
Abstract
164,765. Willans, P. W. March 31, 1919. Sights and methods of sighting. - Relates to means for directing and controlling the fire of a gun or guns, and consists in means for controlling a short-base range-finder, as regards direction and coincidence, so that it shall automatically, according to set velocity components, follow a target moving with a constant velocity on any fixed course or on any course which is changing at a constant rate and the height of which is constant or changing uniformly. According to the invention, the observed position of the target and the target displacement, in the time of flight of the projectile, are resolved along three rectangular axes and compounded with the components of the reversed velocity of the wind multiplied by the time of flight, and the convergence or parallax, and with the necessary trajectorychart particulars so as to actuate computing mechanisms and effect adjustment of other parts to compute automatically the angles of training and elevation which may be automatically applied to the gun. A potentiometric system, shown diagrammatically in Fig. 3, is employed to solve the various equations and comprises rheostats, whereby differences of potential are obtained proportional to the variables or functions thereof, and relays working in conjunction therewith and controlling motors for operating the computing, &c. mechanisms. The range-finder operator adjusts the rheostat 26 to the horizontal course and the brushes bs, bz, and bo on the rheostats 27, 28 and 29 to the horizontal and vertical speed of target and rate of change of course respectively and the difference of potential resulting is applied to relays Ux, Uy, Uz. Associated with the rheostats 26-29 are rheostats 31, 33<a>, 30 and 30a which are employed to compute corrections for travel of target and have a potential gradient proportional to the time of flight of the projectile. The position of the rheostat 31 is controlled by the rheostat 26 to which it is connected by a differential gear and by a brush b# on a rheostat 32 similar to 30 in order to apply a correction for the difference in course angle. On the assumption that the target travels along the chord of the arc, a correction must be applied for the quantity chord; this is effected by a rheostat constructed in two quadrants having a resistance arc, proportional to " Sin #." These rheostats apply # potential difference to relays L2, M2 and N<2>. The fluxes on relays Ux, &c. are reduced to zero by magnetic speedometers Ix &c., associated with motors Jx &c., which drive brushes l3, m3, n3 along rheostats 13, 14 and 15 so as to intercept resistances between brushes l<1>3, &c., which have been set to a position depending on the parallax and apply potential differences to relays L3, M3 and N3 proportional to co-ordinates of target referred to the range finder. Potential differences are also obtained between points l2 &c., and equipctential points l<1>2 &c., and applied to the relays L2, M2 and N2, proportional to the co-ordinates of the target referred to the gun. The fluxes on L3, M. and N3 are reduced to zero when the rheostats 16a, 16b, and the brush bR have taken up their correct position being connected respectively to the elevating, training, and coincidence working head of the range finder. The fluxes on relays L2, M2, and N2 are reduced to zero when the rheostats 8, 9 and the brush bR have taken up their correct position under the control of their motors. Rheostats 3 and 4 are connected through a differential gear with the rheostats 8 and 9, the inner and outer members of each pair being caused to turn through equal angles in opposite directions. The pairs 3, 8 and 4, 9 are set at angles corresponding to the tangent elevation # and drift # respectively and the central members of the differential gears carry brushes b#, b#, movable over rheostats 10, 11 and adjusted to the computed values of # and #. The E.M.F. applied to the rheostats 3 and 4 varied by a motor driving a brush bv, along the rheostat 7 and potential differences from brushes on these rheostats are applied to relays L<1>, M<1>, and N' to which are also applied in opposition thereto potential differences from the rheostats 1, 2 associated with the elevating and training mechanism of the gun and from the rheostat 5 which applies a correction for the wind. A constant E.M.F. from a fixed brush by proportional to the muzzle velocity v of the projectile is applied to the relay 1. Equilibrium is established on all the relays by means of motors which are directly under the control of their relays excepting in the case of the velocity v, the observed range R, and predicted range R, where the control is interchangeable. This latter adjustment is necessary in the motors associated with the rheostats for the muzzle case of a target passing through the gun zenith; a diagram of the connection for the v rheostats is shown in Fig. 5, the relays L1, M1 have commutator switches and supply current to pairs of contact strips 17 and the relay N1 controls the motor Jv, driving the brush bv. The circular rheostats 1, 2 &c. are constructed so that their resistances are proportional to the sines of the angles described at the centre by the movable member; mechanical equivalents such as the " slider-crank " and " swash-plate " are described for producing this result. The method of computing the time of flight of projectile T, tangent-elevation #, fuze setting F, or drift # consists in depositing copper strips on an insulating surface in such a manner as to lie along curves representing the loci of points of equal values of T.#.F. or # and interposing resistances to form a rheostat in which the resistance intercepted between the origin h<1>, Fig. 4. and the plotted point b will be proportional to the values of T &c. for that point. The rheostats for these variables are shown at 19 and have associated therewith other rheostats 20. 21 for correcting changes of muzzle velocity and ballistic coefficient; the values are set on rheostats 24, 23 and 22.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB811019A GB164765A (en) | 1919-03-31 | 1919-03-31 | Improvements in, or relating to, gunnery computing and predicting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB811019A GB164765A (en) | 1919-03-31 | 1919-03-31 | Improvements in, or relating to, gunnery computing and predicting apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB164765A true GB164765A (en) | 1921-06-23 |
Family
ID=9845951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB811019A Expired GB164765A (en) | 1919-03-31 | 1919-03-31 | Improvements in, or relating to, gunnery computing and predicting apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB164765A (en) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2429467A (en) * | 1947-10-21 | Fire control means fob aircraft | ||
US2434270A (en) * | 1944-03-24 | 1948-01-13 | Bell Telephone Labor Inc | Electric air position indicator |
US2434274A (en) * | 1944-04-11 | 1948-01-13 | Bell Telephone Labor Inc | Artillery computer |
US2436178A (en) * | 1943-10-21 | 1948-02-17 | Rca Corp | Electronic computer for transforming polar into rectilinear coordinates |
US2439381A (en) * | 1943-07-17 | 1948-04-13 | Bell Telephone Labor Inc | Computing bomb sight |
US2444770A (en) * | 1943-06-28 | 1948-07-06 | Gen Electric | Height computing apparatus |
US2466879A (en) * | 1944-03-21 | 1949-04-12 | Bell Telephone Labor Inc | Slant range computing circuit |
US2489907A (en) * | 1943-07-17 | 1949-11-29 | Bell Telephone Labor Inc | Artillery computer |
US2493183A (en) * | 1942-05-21 | 1950-01-03 | Bell Telephone Labor Inc | Artillery director |
US2497042A (en) * | 1943-10-19 | 1950-02-07 | Electro Mechanical Res Inc | Electrooptical function synthesizer |
US2497913A (en) * | 1947-04-02 | 1950-02-21 | Rines Robert Harvey | Range and elevation computing system |
US2510384A (en) * | 1944-10-25 | 1950-06-06 | Dehmel Richard Carl | Coordinate conversion and vector apparatus |
US2538253A (en) * | 1944-12-29 | 1951-01-16 | Bell Telephone Labor Inc | Artillery computer |
US2545655A (en) * | 1940-03-11 | 1951-03-20 | Computer | |
US2657464A (en) * | 1928-07-26 | 1953-11-03 | Sperry Corp | Fire control apparatus |
US2670134A (en) * | 1944-12-29 | 1954-02-23 | Bell Telephone Labor Inc | Computer for multiple ballistics |
US2679976A (en) * | 1948-12-06 | 1954-06-01 | Granat Elie | Electric resolver for vectorial summation and resolution |
US2698134A (en) * | 1940-08-27 | 1954-12-28 | Bosch Arma Corp | Electric computer |
US2701098A (en) * | 1945-04-23 | 1955-02-01 | Bell Telephone Labor Inc | Concealed ground target computer for aircraft |
US2710723A (en) * | 1946-04-10 | 1955-06-14 | Leroy A Nettleton | Fuse computer |
US2710720A (en) * | 1943-10-28 | 1955-06-14 | Bell Telephone Labor Inc | Artillery computer |
US2711856A (en) * | 1945-06-07 | 1955-06-28 | John W Gray | Bombing computer |
US2726810A (en) * | 1943-03-25 | 1955-12-13 | Sperry Rand Corp | Electric fire control computer |
US2737652A (en) * | 1943-02-18 | 1956-03-06 | Sperry Rand Corp | Fixed gun inter-aircraft fire control system |
US2749039A (en) * | 1949-04-26 | 1956-06-05 | Carlton W Miller | Wind resolution apparatus |
US2773643A (en) * | 1950-09-29 | 1956-12-11 | Arenco Ab | Deyices for following a movable object |
US2823585A (en) * | 1945-06-07 | 1958-02-18 | John W Gray | Bombing system |
US2825055A (en) * | 1945-06-07 | 1958-02-25 | Chance Britton | Bombing computer apparatus |
US2925956A (en) * | 1952-10-22 | 1960-02-23 | Giao Antonio | Apparatus for calculating a mathematical function through electrical means |
US2950863A (en) * | 1943-10-28 | 1960-08-30 | Bell Telephone Labor Inc | Apparatus for the solution of plane triangles |
CN112639524A (en) * | 2020-04-30 | 2021-04-09 | 华为技术有限公司 | Target detection method and device |
-
1919
- 1919-03-31 GB GB811019A patent/GB164765A/en not_active Expired
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2429467A (en) * | 1947-10-21 | Fire control means fob aircraft | ||
US2657464A (en) * | 1928-07-26 | 1953-11-03 | Sperry Corp | Fire control apparatus |
US2545655A (en) * | 1940-03-11 | 1951-03-20 | Computer | |
US2698134A (en) * | 1940-08-27 | 1954-12-28 | Bosch Arma Corp | Electric computer |
US2493183A (en) * | 1942-05-21 | 1950-01-03 | Bell Telephone Labor Inc | Artillery director |
US2737652A (en) * | 1943-02-18 | 1956-03-06 | Sperry Rand Corp | Fixed gun inter-aircraft fire control system |
US2726810A (en) * | 1943-03-25 | 1955-12-13 | Sperry Rand Corp | Electric fire control computer |
US2444770A (en) * | 1943-06-28 | 1948-07-06 | Gen Electric | Height computing apparatus |
US2489907A (en) * | 1943-07-17 | 1949-11-29 | Bell Telephone Labor Inc | Artillery computer |
US2439381A (en) * | 1943-07-17 | 1948-04-13 | Bell Telephone Labor Inc | Computing bomb sight |
US2497042A (en) * | 1943-10-19 | 1950-02-07 | Electro Mechanical Res Inc | Electrooptical function synthesizer |
US2436178A (en) * | 1943-10-21 | 1948-02-17 | Rca Corp | Electronic computer for transforming polar into rectilinear coordinates |
US2950863A (en) * | 1943-10-28 | 1960-08-30 | Bell Telephone Labor Inc | Apparatus for the solution of plane triangles |
US2710720A (en) * | 1943-10-28 | 1955-06-14 | Bell Telephone Labor Inc | Artillery computer |
US2466879A (en) * | 1944-03-21 | 1949-04-12 | Bell Telephone Labor Inc | Slant range computing circuit |
US2434270A (en) * | 1944-03-24 | 1948-01-13 | Bell Telephone Labor Inc | Electric air position indicator |
US2434274A (en) * | 1944-04-11 | 1948-01-13 | Bell Telephone Labor Inc | Artillery computer |
US2510384A (en) * | 1944-10-25 | 1950-06-06 | Dehmel Richard Carl | Coordinate conversion and vector apparatus |
US2670134A (en) * | 1944-12-29 | 1954-02-23 | Bell Telephone Labor Inc | Computer for multiple ballistics |
US2538253A (en) * | 1944-12-29 | 1951-01-16 | Bell Telephone Labor Inc | Artillery computer |
US2701098A (en) * | 1945-04-23 | 1955-02-01 | Bell Telephone Labor Inc | Concealed ground target computer for aircraft |
US2825055A (en) * | 1945-06-07 | 1958-02-25 | Chance Britton | Bombing computer apparatus |
US2711856A (en) * | 1945-06-07 | 1955-06-28 | John W Gray | Bombing computer |
US2823585A (en) * | 1945-06-07 | 1958-02-18 | John W Gray | Bombing system |
US2710723A (en) * | 1946-04-10 | 1955-06-14 | Leroy A Nettleton | Fuse computer |
US2497913A (en) * | 1947-04-02 | 1950-02-21 | Rines Robert Harvey | Range and elevation computing system |
US2679976A (en) * | 1948-12-06 | 1954-06-01 | Granat Elie | Electric resolver for vectorial summation and resolution |
US2749039A (en) * | 1949-04-26 | 1956-06-05 | Carlton W Miller | Wind resolution apparatus |
US2773643A (en) * | 1950-09-29 | 1956-12-11 | Arenco Ab | Deyices for following a movable object |
US2925956A (en) * | 1952-10-22 | 1960-02-23 | Giao Antonio | Apparatus for calculating a mathematical function through electrical means |
CN112639524A (en) * | 2020-04-30 | 2021-04-09 | 华为技术有限公司 | Target detection method and device |
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