Patent · US Active

Low-G alert

US9359088B2 · kind B2 · utility

1Cited by
7References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 2, 2015
Grant dateJun 7, 2016
Priority date—
Expiry dateFeb 2, 2035

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01P15/0891
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A warning system alerts a helicopter pilot that a low-G condition is imminent or occurring. The low-G alert employs an accelerometer to detect a vertical acceleration of the aircraft. Higher frequency vibrations in the output of the accelerometer are removed by a filter to provide a clean signal representing vertical acceleration of the aircraft. This signal is processed by a central processing unit (CPU) to perform a threshold detector function. The CPU is configured to detect the possibility of the onset or occurrence of a low-G event. Upon detection, the CPU triggers an audible alert to announce “Low-G. Pull aft.” or the like until the low-G event has been corrected or avoided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.