Rolls-royce Corporation

Giles Anthony Richardson

David G MacManus

Christopher Thomas John Sheaf

A gas turbine engine having a rotational axis, an intake and a compressed gas source; the intake includes a lining having a facing which defines an inlet surface and an array of holes; the array of holes includes at least a first set of holes and a second set of holes, the holes of the first set of holes are angled a relative to a radial line and the holes of the second set of holes are angled &#x3b2; relative to the radial line; the angles &#x3b1; and &#x3b2; are different. An active flow control arrangement including a compressed gas supply pipe, a valve arrangement, a controller, a compressed gas distribution pipe may be provided. Compressed gas may be provided to prevent the formation of separation of a main gas flow through the intake and prevent or remove ice accretion.

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Chatteris, United Kingdom

Giles Anthony Richardson