| 摘要 |
A fuel nozzle assembly having a nozzle tip disposed in one end of a fuel delivery tube supported in a mounting flange. An air delivery tube, also secured to said support flange, encloses the fuel delivery tube to define an annular air chamber therebetween. The air delivery tube and the fuel delivery tube define interengaging tab portions providing a breech-lock engagement therebetween, with the tab members disposed closely adjacent the nozzle tip and effecting a sealing engagement between the nozzle tip and an aperture in the end of the air delivery tube through which the tip protrudes. To accommodate unequal axial expansion of the two tubes, the air delivery tube is mounted to the support flange with a flexible diaphragm. The axial closeness of the breech-lock to the sealing engagement at the nozzle minimizes the differential axial expansion between the two tubes over this axial extent and prevents air escaping from the air chamber at the sealing interface of the nozzle tip and the aperture in the air delivery tube.
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