Jam detection system
AssigneeMicrotecnica S.R.L.
InventorsAndrea Mornacchi, Enrico Quaglia, Dario Molinelli
Life of this patent
Estimating the term…
Abstract
A jam detection system for use with a spool valve. The jam detection system includes a spool, a safety sleeve which surrounds the spool, a case which surrounds the safety sleeve, a supply-pressure line, and a return-pressure line. The jam detection system comprises a control volume, an input orifice, an outlet line and a pressure detection element. The control volume is configured to be fluidly connected to the supply-pressure line via the input orifice. The control volume is configured to be fluidly connected to the return-pressure line via the outlet line. The pressure detection element is configured to detect the pressure or a change in pressure within the control volume.
Claims13
A helicopter rotor actuator control system comprising:
- a spool valve and a jam detection system,
- the spool valve comprising:
- a spool;
- a safety sleeve which surrounds the spool;
- a case which surrounds the safety sleeve, a supply-pressure line, and a return-pressure line;
- and
- the jam detection system comprising:
- a control volume, an input orifice, an outlet line and a pressure detection element;
- wherein the control volume is configured to be fluidly connected to the supply-pressure line via the input orifice;
- wherein the control volume is configured to be fluidly connected to the return-pressure line via the outlet line;
- and
- wherein the pressure detection element is configured to detect the pressure or a change in pressure within the control volume'
- wherein:
- the spool and case are so configured that the spool occupies a rest position when the spool is not jammed within the safety sleeve, and
- the spool is configured to move from the rest position when the spool is jammed within the safety sleeve.
Dependencies are inferred from the claim text.