Propeller arrangement
AssigneeROLLS-ROYCE plc
InventorAlexander V. Lavrenko
Life of this patent
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Abstract
A propeller arrangement has a first propeller assembly providing a row of first propellers, and a second propeller assembly, rearward of the first propeller assembly, providing a row of second propellers. The first and second propellers are radially extendable and retractable. The propeller arrangement further has a control system for controlling the extension and retraction of the first and second propellers. The control system is arranged such that when the propellers of one of the first and second propeller assemblies extend, the propellers of the other of the first and second assemblies retract.
Claims16
A propeller arrangement having:
- a first propeller assembly providing a row of first propellers, and a second propeller assembly, rearward of the first propeller assembly, providing a row of second propellers, the first and second propellers being unitary components and radially extendable and retractable, and
- a control system configured with a controller so as to control the extension and retraction of the first and second propellers;
- the control system is arranged such that when the propellers of one of the first and second propeller assemblies extend, the propellers of the other of the first and second assemblies retract.
A turboprop engine having a propeller arrangement having:
- a first propeller assembly providing a row of first propellers, and a second propeller assembly, rearward of the first propeller assembly, providing a row of second propellers, the first and second propellers being radially extendable and retractable, and
- a control system configured with a controller so as to control the extension and retraction of the first and second propellers;
- the control system is arranged such that when the propellers of one of the first and second propeller assemblies extend, the propellers of the other of the first and second assemblies retract.
A propeller arrangement having:
- a first propeller assembly providing a row of first propellers, and a second propeller assembly, rearward of the first propeller assembly, providing a row of second propellers, the first and second propellers being unitary components and radially extendable and retractable by actuation at their roots, and
- a control system configured with a controller so as to control the extension and retraction of the first and second propellers;
- the control system is arranged such that when the propellers of one of the first and second propeller assemblies extend, the propellers of the other of the first and second assemblies retract.
Dependencies are inferred from the claim text.