The "Avro Trainer" airplane (British) : a training biplane (1930)
NASA Technical Reports Server (NTRS) · leaf 14
ends of the longerons are welded split oollars which carry the fin post,as shown in 13. The rudder is hinged to the fin post and carried on ball bearings. The casings over these bearings contain felt pads soared in lubricant.The wooden fairings are attached to the longerons by neat clips,as shown… … "Flight' 20 shews one of the jigs used while riveting up the spars. shefahe.^
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
