Collective detent system for vertical takeoff flight operations
US5853152A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Apr 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0669
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A collective detent system is incorporated in combination with the flight control system of a helicopter to enhance vertical takeoff flight operations of the helicopter. One embodiment of the collective detent system includes a collective control stick that is pivotable through a range of operating positions from a full-down collective position to a full-up collective position with one of the operating positions of the range defining a vertical takeoff operating position that provides the vertical takeoff power level required for the vertical takeoff flight profile of the helicopter, a trim switch for a conventional collective trim system that is operative to implement a trim mode function wherein the collective control stick can be trimmed in any selected operating position, a vertical takeoff (VTO) detent switch that is operative to generate a detent signal when activated, an adjustable sensor that is operative to generate a stick-position signal when the collective control stick is pivoted into the vertical takeoff operating position, a restraint force generating (RFG) device, and a modified trim system circuit that functionally interconnects the trim switch, the VTO detent swit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.