Jet engine analyzer

• US 3,238,768 A
• Filed: 02/19/1963
• Issued: 03/08/1966
• Est. Priority Date: 02/19/1963
• Status: Expired due to Term

• Current Assignee: Donald V. Richardson
• Original Assignee: Donald V. Richardson
• Inventors: Richardson, Donald V.
• Application Number:
  US04/259,496
• Time in Patent Office: 1,113 Days
• US Class Current: 73/112.01
• CPC Class Codes: F02C 9/28 Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed F02C9/30 - F02C9/38, F02C9/44 take precedence
• CPC Class Codes: G06G 7/24 for evaluating logarithmic or exponential functions, e.g. hyperbolic functions for multiplication, division or for evaluating powers or roots using logarithmic functions; gamma correction in television systems H04N5/20, H04N9/69
• CPC Class Codes: G06G 7/64 for non-electric machines, e.g. turbine
• CPC Class Codes: G06G 7/70 for vehicles, e.g. to determine permissible loading of ships , centre of gravity, necessary fuel

Claims

28. AN ANALYZER FOR A JET ENGINE HAVING AN INTAKE DIFFUSER OUTLET AND A LOW-PRESSURE AND A HIGH-PRESSURE SPOOL INCLUDING IN COMBINATION MEANS FOR PROVIDING A FIRST SIGNAL IN ACCORD WITH THE RATIO OF TWO ENGINE PRESSURES ONE OF WHICH IS AT SAID OUTLET AND THE OTHER OF WHICH IS DOWNSTREAM THEREOF, MEANS RESPONSIVE TO THE FIRST SIGNAL FOR PROVIDING A SECOND SIGNAL IN ACCORD WITH THE EXPECTED ROTATIONAL VELOCITY OF THE HIGH-PRESSURE SPOOL FOR AN ENGINE IN NORMAL CONDITION OPERATING WITH A STANDARD TEMPERATURE AT SAID OUTLET, MEANS FOR PROVIDING A THIRD SIGNAL IN ACCORD WITH THE ACTUAL ROTATIONAL VELOCITY OF THE HIGHPRESSURE SPOOL, MEANS RESPONSIVE TO THE TEMPERATURE AT SAID OUTLET FOR CORRECTING THE THIRD SIGNAL TO SAID STANDARD TEMPERATURE THEREBY TO PROVIDE A FOURTH SIGNAL, AND MEANS RESPONSIVE TO THE SECOND AND FOURTH SIGNALS FOR DETERMINING A DEVIATION IN THE ROTATIONAL VELOCITY OF THE HIGHPRESSURE SPOOL.