Air data computer

Claim 1

AIR DATA COMPUTING APPARATUS COMPRISING IN COMBINATION: FIRST PRESSURE TRANSDUCING MEANS HAVING A FIRST INPUT CONNECTED TO A SOURCE OF INDICATED STATIC PRESSURE PSI, A SECOND INPUT CONNECTED TO A SOURCE OF PRESSURE CORRECTION SIGNAL $P AND AN OUTPUT PS; FIRST MOTIVE MEANS CONNECTED TO SAID FIRST PRESSURE TRANSDUCING MEANS AND OPERABLE BY THE OUTPUT THEREOF TO PRODUCE A MECHANICAL MOTION INDICATIVE OF LOG PS; FIRST REBALANCE MEANS INCLUDING MEANS CHARACTERIZED TO CONVERT MECHANICAL MOTION INDICATIVE OF LOG PS TO MECHANICAL MOTION INDICATIVE OF PS; MEANS CONNECTING SAID FIRST REBALANCE MEANS TO SAID FIRST MOTIVE MEANS AND TO SAID FIRST PRESSURE TRANSDUCING MEANS TO PROVIDE REBALANCE OF SAID FIRST PRESSURE TRANSDUCING MEANS; SECOND PRESSURE TRANSDUCING MEANS HAVING A FIRST INPUT CONNECTED TO THE SOURCE OF PSI, HAVING A SECOND INPUT CONNECTED TO A SOURCE OF TOTAL PRESSURE PT, HAVING A THIRD INPUT CONNECTED TO THE SOURCE OF $P AND AN OUTPUT; SECOND MOTIVE MEANS CONNECTED TO SAID SECOND PRESSURE TRANSDUCING MEANS AND OPERABLE BY THE OUTPUT THEREOF TO PRODUCE A MECHANICAL MOTION INDICATIVE OF LOG QC; SECOND REBALANCE MEANS INCLUDING MEANS CHARACTERIZED TO CONVERT MECHANICAL MOTION INDICATIVE OF LOG QC TO MECHANICAL MOTION INDICATIVE OF QC; MEANS CONNECTING SAID SECOND REBALANCE MEANS TO SAID SECOND MOTIVE MEANS AND TO SAID SECOND PRESSURE TRANSDUCING MEANS TO PROVIDE REBALANCE OF SAID SECOND PRESSURE TRANSDUCING MEANS; MECHANICAL DIFFERENCE MEANS CONNECTED TO SAID FIRST MOTIVE MEANS AND TO SAID SECOND MOTIVE MEANS AND OPERABLE TO PROVIDE A MECHANICAL OUTPUT MOTION INDICATIVE OF THE DIFFERENCE BETWEEN LOG PS AND LOG QC; FURTHER CHARACTERIZED MEANS CONNECTED TO SAID MECHANICAL DIFFERENCE MEANS AND OPERABLE TO CONVERT THE MECHANICAL OUTPUT MOTION THEREOF TO A SIGNAL INDICATIVE OF MACH NUMBER M; MEANS CONNECTED TO SAID FURTHER CHARACTERIZED MEANS AND TO THE SOURCE OF $P SIGNAL TO PROVIDE A SIGNAL INDICATIVE OF THE RATIO $P/PS TO THE SOURCE OF $P SIGNAL; AND MEANS CONNECTED TO SAID FIRST REBALANCE MEANS AND TO THE SOURCE OF $P SIGNAL TO PROVIDE A SIGNAL INDICATIVE OF PS, SAID SOURCE OF $P SIGNAL OPERATING TO MULTIPLY THE $P/PS, SIGNAL AND THE PS SIGNAL SO AS TO PRODUCE A SIGNAL INDICATIVE OF $P.