How an aeroplane is built . length and found correct, thestrut should be tried in between the actuallongerons for fit, and it should go in witha gentle pressure. When it is in its finalcorrect position the bolt-holes in the fittingshould be very carefully marked off on thelongeron for drilling; this can be donewith advantage by using a piece of steelexactly fitting the bolt-hole, about 4 , and slightly countersunk, like a rivet-snap, and giving the piece of steel a fewlight taps to mark the longeron. This having been done, pencil a distin-guishing mark on the strut and on thelongeron, s
How an aeroplane is built . length and found correct, thestrut should be tried in between the actuallongerons for fit, and it should go in witha gentle pressure. When it is in its finalcorrect position the bolt-holes in the fittingshould be very carefully marked off on thelongeron for drilling; this can be donewith advantage by using a piece of steelexactly fitting the bolt-hole, about 4 , and slightly countersunk, like a rivet-snap, and giving the piece of steel a fewlight taps to mark the longeron. This having been done, pencil a distin-guishing mark on the strut and on thelongeron, so that it will be picked out againand put into the same place in the samefuselage. Preferably use a rubber stamp. All struts will be fitted in this manner,and after this work is completed, eachlongeron should have the position of thefittings and the bolt-holes marked out forthe vertical strut fittings, after which thelongerons should be taken out of the jigand the bolt-holes drilled on a drilling60 HOW AN AEROPLANE IS BUILT. 61 HOW AN AEROPLANE IS BUILTmachine with the aid of a metal plate jigclamped to the longeron to prevent theholes from being drilled out of centre. Asno inaccuracies in bolt-holes in wood workare permissible, extra care must be takenwith the drilling, and wood drills used,twist drills not being suitable. GETTING TOGETHER. All the various bolt-holes being drilled,the longerons will at once be returned tothe erecting shop. Here the longerons,being of spruce, should be neatly boundwith J-in. India tape, tightly laid on afterthe surface has been well covered withglue, and also the tape, each layer halfoverlapping the previous one and the endsecured by a couple of f-in. by 20 gaugebrass gimp pins, after which all surplusglue may be removed with a damp binding is only required where thesteel fittings are placed, and should extendabout J in. either side. The longeron will then be replaced inthe jig and the final assembly of the rearbottom part of the fusel
Size: 998px × 2503px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidhowa, booksubjectairplanes
