Aircraft instrument

Claim 1

AN INSTRUMENT FOR USE WITH A PILOTED AIRCRAFT COMPRISING: SINGLE INDICATOR MEANS TO INDICATE OPTIMUM AIRCRAFT OPERATION DURING TAKEOFF ROLL, ROTATION AND CLIMB, A PLURALITY OF PRESSURE-RESPONSIVE MEANS IN OPERATIVE RELATIONSHIP WITH SAID INDICATOR MEANS, PRESSURE SENSING MEANS IN INDIVIDUAL OPERATIVE CONNECTION WITH EACH OF SAID PRESSURE-RESPONSIVE MEANS, SAID PLURALITY OF PRESSURERESPONSIVE MEANS INCLUDING AN ANGLE OF ATTACK RESPONSIVE UNIT, A TOTAL-PRESSURE-RATE RESPONSIVE UNIT AND AN AIRCRAFT ROTATION PROGRAMMING UNIT, SAID UNIT BEING INDIVIDUALLY AND RESPECTIVELY RESPONSIVE DURING AIRCRAFT OPERATION TO PRESSURE VARIABLES SENSED BY SAID PRESSURE SENSING MEANS AS CAUSED BY CHANGES IN AIRCRAFT ANGLE OF ATTACK, TOTAL PRESSURE, AND DYNAMIC PRESSURE; MEANS CONNECTED TO SAID SINGLE INDICATOR MEANS FOR SO COMBINING THE OUTPUTS OF SAID UNITS INTO A RESULTANT OUTPUT FUNCTION THAT AS THE RESPECTIVE OUTPUTS OF SAID ANGLE-OF-ATTACK RESPONSIVE UNIT AND SAID TOTAL-PRESSURE-RATE RESPONSIVE UNIT INCREASE, EACH CONTRIBUTES IN A CONSTANT SENSE TO SAID RESULANT OUTPUT FUNCTION, AND AS THE OUTPUT OF SAID ROTATION PROGRAMING UNIT INCREASE IT FIRST CONTRIBUTES TO THE RESULTANT OUTPUT FUNCTION IN ONE SENSE AND AFTER REACHING A SETTABLE VALUE CONTRIBUTES TO THE RESULTANT OUTPUT FUNCTION IN THE REVERSE SENSE, SUCH THAT UPON ESSENTIALLY OPTIMUM AIRCRAFT OPERATION DURING TAKEOFF ROLL, ROTATION AND CLIMBOUT, THE OUTPUT FUNCTION DERIVED WILL BE ESSENTIALLY EQUAL TO ZERO AND THE PILOT, BY CONTROLLING THE AIRCRAFT, TO MAINTAIN A SUBSANTIALLY FIXED READING BY SAID SINGLE INDICATOR MANS DURING AIRCRAFT TAKEOFF, WILL CAUSE THE AIRCRAFT TO ROTATE TO TAKEOFF ATTITUDE AT THE PROPER SPEED AND THEREAFTER TO FOLLOW A NEAR-OPTIMUM CLIMBOUT PATH.