Fire control system for weapons

Claim 1

A FIRE CONTROL SYSTEM FOR AIMING A WEAPON MOVABLE IN TRANSVERSE AND ELEVATION AT A REMOTE TARGET COMPRISING: A FIRST SERVOMOTOR MEANS INCLUDING A TRAVERSE CONTROL SIGNAL INPUT AND A MECHANICAL OUTPUT COUPLED TO SAID WEAPON FOR MOVING THE LATTER TO A DIFFERENT TRAVERSE ANGLE WHEN A CONTROL SIGNAL IS RECEIVED AT SAID TRAVERSE CONTROL SIGNAL INPUT; A SECOND SERVOMOTOR MEANS INCLUDING AN ELEVATION CONTROL SIGNAL INPUT AND A MECHANICAL OUTPUT COUPLED TO SAID WEAPON FOR MOVING THE LATTER TO A DIFFERENT ELEVATION ANGLE WHEN A CONTROL SIGNAL IS RECEIVED AT SAID ELEVATION CONTROL SIGNAL INPUT; A SIGHT DIRECTABLE TO DIFFERENT TRAVERSE ANGLES AND DIFFERENT ELEVATION ANGLES; A FIRST TRANSMITTING RESOLVER COMPRISING A ROTOR PART AND A STATOR PART, A PRIMARY WINDING ON ONE OF SAID PARTS, MEANS FOR FEEDING A CONSTANT PEAK AMPLITUDE A.C. VOLTAGE TO SAID PRIMARY WINDING, TWO MUTUALLY ORTHOGONALLY ORIENTED SECONDARY WINDINGS ON THE OTHER OF SAID PARTS, MEANS FOR COUPLING SAID ROTOR PART TO SAID SIGHT WHEREBY ONE OF SAID SECONDARY WINDINGS TRANSMITS A VOLTAGE PROPORTIONAL TO SIN $ AND THE OTHER OF SAID SECONDARY WINDINGS TRANSMITS A VOLTAGE PROPORTIONAL TO COS $, $ BEING THE TRAVERSE ANGLE OF SAID SIGHT WITH REPECT TO A GIVEN DIRECTION; A SECOND TRANSMITTING RESOLVER COMPRISING A ROTOR PART AND A STATOR PART, A PRIMARY WINDING ON ONE OF SAID PARTS, MEANS FOR FEEDING A CONSTANT PEAK AMPLITUDE A.C. VOLTAGE TO SAID PRIMARY WINDING, TWO MUTUALLY ORTHOGONALLY ORIENTED SECONDARY WINDINGS ON THE OTHER OF SAID PARTS, MEANS FOR COUPLING SAID ROTOR PART TO SAID SIGHT WHEREBY ONE OF SAID SECONDARY WINDINGS TRANSMITS A VOLTAGE PROPORTIONAL TO SIN $ AND THE OTHER OF SAID WINDINGS TRANSMITS A VOLTAGE PROPORTIONAL TO COS X, X BEING THE ELEVATION ANGLE OF SAID SIGHT WITH RESPECT TO A GIVEN PLANE; A FIRST COMPARISON RESOLVER COMPRISING A STATOR PART AND A ROTOR PART, TWO MUTUALLY ORTHOGONALLY ORIENTED PRIMARY WINDINGS ON ONE OF SAID PARTS, A SECONDARY WINDING ON THE OTHER OF SAID PARTS, MEANS FOR CONNECTING SAID ROTOR PART TO THE MECHANICAL OUTPUT OF SAID FIRST SERVOMOTOR MEANS, MEANS FOR CONNECTING ONE OF SAID SECONDARY WINDINGS OF SAID FIRST TRANSMITTING RESOLVER TO ONE OF THE PRIMARY WINDINGS OF SAID FIRST COMPARISON RESOLVER, MEANS FOR CONNECTING THE OTHR OF SAID SECONDARY WINDINGS OF SAID FIRST TRANSMITTING RESOLVER TO THE OTHER OF THE PRIMARY WINDINGS OF SAID FIRST COMPARISON RESOLVER WHEREBY THE SECONDARY WINDING OF SAID FIRST COMPARISON RESOLVER TRANSMITS A VOLTAGE PROPORTIONAL TO SIN ($V-$), $V BEING THE TRAVERSE ANGLE OF SAID WEAPON WITH RESPECT TO SAID GIVEN DIRECTION, SAID VOLTAGE CONSTITUTING A PRIMARY TRAVERSE CONTROL SIGNAL; A SECOND COMPARISON RESOLVER COMPRISING A STATOR PART AND A ROTOR PART, TWO MUTUALLY ORTHOGONALLY ORIENTED PRIMARY WINDINGS ON ONE OF SAID PARTS, A SECONDARY WINDING ON THE OTHER OF SAID PARTS, MEANS FOR CONNECTING SAID ROTOR PART TO THE MECHANICAL OUTPUT OF SAID SECOND SERVOMOTOR MEANS, MEANS FOR CONNECTING ONE OF THE SECONDARY WINDINGS OF SAID SECOND TRANSMITTING RESOLVER TO ONE OF THE PRIMARY WINDINGS OF SAID SECOND COMPARISON RESOLVER, MEANS FOR CONNECTING THE OTHER SECONDARY WINDING OF SAID SECOND TRANSMITTING RESOLVER TO THE OTHER PRIMARY WINDING OF SAID SECOND COMPARISON RESOLVER WHEREBY THE SECONDARY WINDING OF SAID SECOND COMPARISON RESOLVER TRANSMITS A VOLTAGE PROPORTIONAL TO SIN (XV-C), XV BEING THE ELEVATION ANGLE OF SAID WEAPON WITH RESPECT TO SAID GIVEN PLANE, SAID VOLTAGE CONSTITUTING A PRIMARY ELEVATION CONTROL SIGNAL; COMPUTER MEANS INCLUDING SIGNAL INPUTS CONNECTED TO AT LEAST ONE OF THE SECONDARY WINDINGS OF SAID FIRST TRANSMITTING RESOLVER AND AT LEAST ONE OF THE SECONDARY WINDINGS OF SAID SECOND TRANSMITTING RESOLVER, A FIRST SIGNAL OUTPUT FOR TRANSMITTING DEFLECTION TRAVERSE CONTROL SIGNAL WHICH IS TRIGONOMETRICALLY RELATED TO THE TRAVERSE ANGLE OF SAID SIGHT AND A SECOND SIGNAL OUTPUT FOR TRANSMITTING A DEFLECTION ELEVATION CONTROL SIGNAL WHICH IS TRIGONOMETRICALLY RELATED TO THE ELEVATION ANGLE OF SAID SIGHT; MEANS FOR FEEDING THE SUM OF SAID PRIMARY AND DEFLECTION TRAVERSE CONTROL SIGNALS TO THE TRAVERSE CONTROL SIGNAL INPUT OF SAID FIRST SERVOMOTOR MEANS; AND MEANS FOR FEEDING THE SUM OF SAID PRIMARY AND DEFLECTION ELEVATION CONTROL SIGNALS TO THE ELEVATION CONTROL SIGNAL INPUT OF SAID SECOND SERVOMOTOR MEANS.