Device for feeding cooling air to flap nozzle

The device has a conduit (30) connecting a divergent flap (21) of a convergent-divergent duct (1) to a cooling air source (31). The conduit has a telescopic portion (32) situated between two knuckle links (33, 34) and comprising two tubes (32A, 32B) sliding with each other. The link (33) connects the conduit to the source and the link (34) connects the conduit to an internal cavity (23) of the flap. An independent claim is also included for a jet engine comprising a convergent-divergent duct provided with a cooling air supply device.