飞机维修手册

Page 1 51−10−00Aug 01/10INVESTIGATION − CLEANUP AND AERODYNAMIC SMOOTHNESS1.GeneralNOTE:The tolerances contained within this chapter can be used to determinethe general aerodynamic smoothness requirements. These limits arederived for the aircraft in cruise condition and may be exceeded when measured on the ground. In this case the tolerances on the installaĆtion drawings must be used.A.For a high aircraft performance it is necessary that the aircraft has an aerodynamically clean shape and a smooth external surface. Damage not re−paired, dents not filled and repairs which change the contour or roughĆens the surface can reduce the performance.B.The aerodynamic smoothness of the external surface is divided into three tolerance areas. You can find these tolerance areas under the heading ’Degree of Smoothness’.−Refer to Figure 2 and Figure 3 and Tables 1 thru 15(1)Description of the tolerance areas (Refer to Figure 2 and 3):(a)Area ’A’: Surface areas with very good aerodynamic qualities andrequiring close tolerances.(b)Area ’A1’: Surface areas which are parts of area ’A’. They aresubject to further detailed improvements concerning fastener stanĆdards.(c)Area ’B’: Surface areas with tolerances usually larger than area’A’.(2)You must take precautions to protect the surface from damage whenyou work on it. You must wear soft−soled shoes and cover the area with rubber mats.2.Aerodynamic Smoothness Requirements A.Fuselage(1)Refer to :−Figure 1, Figure 2, Figure 4, Figure 5, Figure 6, Figure 7 and Figure 8 and also to Tables 1, 5 and 6for details of fuselage smoothness requirements.NOTE:For aerodynamic requirements in the region of static ports,angle of attack sensors, pitot probes and total air temperature probes refer to Chapter 53−00−11, Page Block 101, in which specific aerodynamic tolerances are included.B.Belly FairingPage 2 51−10−00Aug 01/10(1)Refer to :−Figure 1, Figure 2, Figure 4, Figure 5, Figure 6, Figure 7 and Figure 9 and also to Tables 1, 7 and 8.for details of belly fairing smoothness requirements.C.Wing(1)Refer to :−Figure 1, Figure 3, Figure 4, Figure 5, Figure 6, Figure 10 and Figure 11 and also to Tables 2, 3, 4, 9 and 10.for details of wing smoothness requirements.D.Stabilizers(1)Refer to :−Figure 1, Figure 4, Figure 5, Figure 6, Figure 7, Figure 11 and Figure 12 and also to Tables 1, 11, 12 and 13.for details of stabilizer smoothness requirements.E.Pylon and nacelle(1)Refer to :−Figure 1, Figure 4, Figure 5, Figure 6, Figure 7 and Figure 13and also to Tables 2, 3, 4, 14 and 15.for details of pylon and nacelle smoothness requirements.3.Aerodynamic Smoothness − FastenersA.All fasteners on external surfaces must be flush. This does not include section 19−Tail Cone lower shell and end cover.(1)Sign convention:+ = protruding above surface − = recessed below surfacePage 3 51−10−00Aug 01/10Table 1<1>On pylon primary structure 0.3 mm (0.012 in.)NOTE:On angled surfaces the ’Normal’ tolerances apply at the lowest intersecĆtion (Refer to Figure 1).Table 2NOTE:On angled surfaces the ’Normal’ tolerances apply at the lowest intersecĆtion (Refer to Figure 1)Page 51-10-00Feb 01/03Flushness of Fasteners /Special WashersFigure 1B.Angled surfaces(1)On angled surfaces the 'Normal'tolerances apply at the lowest inter-section (Refer to Figure 1).C.Special Washers(1)For the tolerances applicable in particular to washers under bolts oncomposite surfaces refer to Figure 1.4.AbbreviationsA.The following special abbreviations are used in this Chapter:-IN LOF =in line of flight-A LOF =across line of flightPage 51-10-00Feb 01/02Aerodynamic Smoothness -Tolerance AreasFigure 2Page 51-10-00Feb 01/02Aerodynamic Smoothness -Tolerance AreasFigure 3Page 51-10-00Feb 01/02Definitions and Sign ConventionsFigure 4(sheet 1)Page 51-10-00Feb 01/02Definitions and Sign ConventionsFigure 4(sheet 2)STRUCTURAL REPAIR MANUALPage 10 51−10−00Aug 01/06General Measures − Fixed StructureFigure 5STRUCTURAL REPAIR MANUALPage 11 51−10−00May 01/07General Measures − Hinged Doors etc.Figure 6Aerodynamic Smoothness − Filling of GapsFigure 7Page 12 51-10-00Feb 01/02Skin Waviness -Fuselage General SurfaceFigure 8Page 14 51-10-00Feb 01/02Skin Waviness -Belly Fairing General SurfacesFigure 9Page 16 51-10-00Feb 01/02Skin Waviness -Wing General SurfacesFigure 10Page 18 51-10-00Feb 01/02Aerodynamic Smoothness -Stabilizers General SurfacesFigure 11Page 19 51-10-00Feb 01/02Aerodynamic Smoothness -StabilizersFigure 12Page 21 51-10-00Feb 01/02Aerodynamic Smoothness -Pylon and NacelleFigure 13。