Accession Number:

AD0165105

Title:

Solid State Instrument System for Digital Counting and Continuously Indicating Count Results.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON D C

Report Date:

1973-08-21

Pagination or Media Count:

14.0

Abstract:

The patent describes a digital solid state engine RPM sensing and indicating system for multi-engine aircraft, the RPM indications made simultaneously in the form of side-by-side bar graphs and side-by-side numeric displays for each engine showing RPM as a percentage of rated RPM, the displays being formed by light-emitting diodes and the system arranged such that the bar graphs indicate changes at each 5 percent of noted RPM below 70 percent and at 1 percent above 70 percent. Special current limiting and cooling features are provided to handle the current requirements of the diodes and power supply.

Subject Categories:

  • Flight Control and Instrumentation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE