DOC AIRBUS | AMM A320FMAIN STRUCTURE - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
** ON A/C NOT FOR ALL
1. General
The main structure of the cone/rear fuselage are the frames, the stringers and the skin plates. They are made of aluminum-alloy and they are riveted together to make the fuselage shell. The support struts, the ties and the edge beams make the fuselage shell stronger.
** ON A/C NOT FOR ALL The main structure of the cone/rear fuselage are the frames, the stringers and the skin plates. They are made of aluminum-alloy and they are riveted together to make the fuselage shell. The support struts, the ties and the edge beams make the fuselage shell stronger.
** ON A/C NOT FOR ALL
Main Structure Cone/Rear Fuselage3. Description
A. Frames
(1) The frames are the stiffeners that go around the cone/rear fuselage shell. They are made of aluminum-alloy and are machined or formed. The FR70 is fully machined and it carries the aluminum sheet sections which make the rear pressure bulkhead.
(2) The top sections of FR72 and FR74 are machined and are made stronger to carry the load of the vertical stabilizer. The lower sections are made of aluminum-alloy sheets which are formed.
(3) The frames in the area of the horizontal stabilizer cut-outs are made in segments. A system of diagonal struts and edge beams make these frames stronger.
B. Stringers and Skin Stiffeners
(1) The stringers are the longitudinal stiffeners of the cone/rear fuselage shell. They are made of aluminum alloy Z-sections and are formed. They are riveted between the frames and the skin plates.
(2) Skin stiffeners make the skin stronger in areas where there are no stringers. The skin stiffeners are riveted to the skin plates.
C. Skin Plates
The skin plates are made of aluminum-alloy sheets and the stringers which are riveted to them make them stronger. The skin plates are preformed to the contour of the fuselage before they are riveted to the frames.
The skin plates are made of aluminum-alloy sheets and the stringers which are riveted to them make them stronger. The skin plates are preformed to the contour of the fuselage before they are riveted to the frames.
D. Support Struts
The support struts make the frames stronger in the areas where the frames have to carry heavy loads. The diagonal support struts at FR77 are adjustable.
The support struts make the frames stronger in the areas where the frames have to carry heavy loads. The diagonal support struts at FR77 are adjustable.
E. Fittings
(1) The attachment fittings for the vertical stabilizer are made of aluminum-alloy and are machined. The attachment fittings are riveted in pairs to the top part of FR70, FR72 and FR74.
(2) The attachment fittings for the horizontal stabilizer are made of aluminum-alloy. Bolts are used to attach these fittings to the upper and the lower section of FR77.
(3) The diagonal struts support the fittings and the hinge bearings of the horizontal stabilizer.
(4) The attachment fittings for the tail-cone are at the aft side of FR77. They are machined and are part of FR77. The working platform in the cone/rear fuselage is between FR71 and FR73. It has an aluminum-alloy frame work and a honeycomb top panel.