Aircraft braking method and ducted fan jet engine for...

Details Aircraft braking method and ducted fan jet engine for... Aircraft braking method and ducted fan jet engine for...

2005-06-20

2008-12-30

Kim, Ted (Department: 3746)

Power plants

Reaction motor

Method of operation

C060S226200, C060S230000, C239S265250, C239S265270

Reexamination Certificate

active

07469528

ABSTRACT:
The braking method for an aircraft propelled by at least one ducted fan jet engine, the latter comprising a fan, a jet engine core in which the primary flow circulates, a secondary flow exhaust nozzle, encased in a nacelle, comprises the step, in low-power operation, of unloading at least part of the secondary flow so as to reduce the residual thrust of the jet engine without producing any thrust. With the method of the invention, aircraft braking can be achieved without any thrust reverser device using the braking force generated by the drag of the jet engine or engines completed by reduction of residual thrust by unloading the secondary flow.

REFERENCES:
patent: 3620022 (1971-11-01), Beale
patent: 3747341 (1973-07-01), Davis
patent: 3875742 (1975-04-01), McMurtry et al.
patent: 4485970 (1984-12-01), Fournier et al.
patent: 4541237 (1985-09-01), Dickey
patent: 5315821 (1994-05-01), Dunbar et al.
patent: 1 388 406 (1975-03-01), None

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