US 8,066,218 B2 · Anti-missile defense suite

Abstract

A system and method for an aircraft (10) that provides an IR decoy (12) for an incoming missile (18) to track instead of an engine (14) of the aircraft (10) is disclosed. The IR decoy (12) is deployed during or just after take off, and prior to landing to provide a signature (16) for any incoming missile (18). The IR decoy (12) provides a heat source (16) that has a higher radiant intensity than the hottest heat source on the aircraft (10), which is typically the engine (14), thereby providing a more attractive heat source for the missile (18). In another embodiment, a warning system (20) for an aircraft (10) detects an incoming missile (18), and deploys IR decoy (12) and creates an engine mask (22) by injecting an additive into the exhaust stream of the engine (14), thereby obscuring the radiation emanating from the engine (14).

Claims13

Dependent claims

A method for producing a decoy infrared signature to direct an incoming infrared guided missile away from an aircraft infrared signature and to the decoy infrared signature, the method comprising:

deploying a towed IR decoy during at least one aircraft flight time period including aircraft take off and aircraft landing;
powering the towed IR decoy by a laser source located within said aircraft;
amplifying said laser source with an amplifier located within said aircraft to produce an IR decoy infrared signature;
wherein the IR decoy infrared signature is of a magnitude greater than the infrared signature of said aircraft, and wherein said IR decoy infrared signature includes infrared energy in more than one spectral band;
distributing the IR decoy infrared signature by means of a plurality of optical fibers of various lengths coupled to a plurality of small apertures within the IR decoy;
detecting an incoming infrared guided missile with a warning system, and responsive to said detecting, further including the act of masking an infrared signature of at least one engine of the aircraft by causing a first amount of exhaust obscurant to be added into an exhaust stream of said at least one engine of the aircraft;
and
retracting the towed IR decoy after the aircraft reaches an altitude that is beyond a range of an infrared guided missile or proximate the time immediately preceding or after the aircraft has landed.

5 more elements

An aircraft system for detecting and avoiding an incoming infrared guided missile, the system comprising:

a warning system, for detecting an incoming infrared guided missile;
a towed IR decoy, coupled to a laser source, the laser source being located within the aircraft, for producing a decoy infrared signature, said towed IR decoy coupled to said laser source within the aircraft by way of a plurality of fiber optic cables, wherein said plurality of fiber optic cables have various lengths, each varying length fiber optic cable having a terminating point a distance from a terminating point of one or more other of said plurality of fiber optical cables, for directly radiating IR energy into the atmosphere from the terminating points, wherein the various lengths of fiber optic cables and distance between said terminating points provides said decoy infrared signature;
an amplifier located within the aircraft wherein the amplifier amplifies said IR decoy infrared signature to a magnitude greater than an infrared signature of said aircraft, and wherein said IR decoy infrared signature includes infrared energy in more than one spectral band;
a deployment and retraction device, for deploying the towed IR decoy when the warning system has detected the incoming missile, and for retracting the towed IR decoy when the warning system is not detecting the incoming missile;
and
an aircraft engine obscurant system, responsive to said detection of said incoming infrared guided missile from said warning system, for masking an infrared signature of at least one engine of the aircraft by causing a first amount of exhaust obscurant to be added into an exhaust stream of said at least one engine of the aircraft.

3 more elements

Dependencies are inferred from the claim text.

Anti-missile defense suite

Life of this patent

Anti-missile defense suite

Life of this patent

Abstract

Claims13