Nozzles for gas turbine engines

A variable area nozzle for a gas turbine engine comprising fixed structure including a jet pipe, a circumferential array of nozzle petals, including certain master petals arranged about the discharge opening of the jet pipe and means supporting the petals for nozzle area varying movement relative to the jet pipe, said means including in respect of at least said master nozzle petals respective pairs of axially spaced apart rollers which engage guide track surfaces supported from said structure, there being, in respect of the upstream roller of each said pair, a radially outwardly facing guide track surface and in respect of the downstream roller of each said pair a radially inwardly facing guide track surface, the radially inwardly and outwardly facing guide track surfaces being mutually inclined for changing the relative petal inclinations on operation of means for simultaneously moving all the said petals along said guide track surfaces, there being further provided structure interconnecting the radially inwardly facing guide track surfaces whereby in operation radially outward loads from the said downstream rollers are borne at least partially by tension in said structure.