Flashcards on Aircraft Metallic Structure Repair
Aircraft Metallic Structure Repair: A Comprehensive Guide
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Aircraft Sheet Metal
27 cards
Card 1
Question: What are the three requirements for a repair to a piece of sheet metal aircraft structure?
Answer: Restore the lost strength, restore rigidity, and not change the aerodynamic shape of the part.
Card 2
Question: When making a riveted repair, which should be stronger: the shear strength of the rivet or the bearing strength of the sheet metal?
Answer: They should be close to each other, but the bearing strength of the sheet should be greater.
Card 3
Question: What type of device is a Cleco fastener and what is its use?
Answer: A patented temporary fastener inserted in rivet holes to hold sheet metal pieces together until they can be riveted.
Card 4
Question: What is the main advantage of HI-LOK fasteners over other fasteners?
Answer: They can be installed without using special rivet tools.
Card 5
Question: What identification mark do most aircraft rivets have?
Answer: Dimples on the head that indicate the rivet type or alloy.
Card 6
Question: What is the general rule for selecting the proper rivet diameter?
Answer: Use a rivet diameter equal to three times the thickness of the thickest sheet.
Card 7
Question: What is the primary function of throatless shears in a sheet metal shop?
Answer: To cut mild carbon steel up to 10-gage and stainless steel up to 12-gage and to cut irregular curves in the metal.
Card 8
Question: What is the purpose of a sight line when laying out sheet metal to be bent in a cornice brake?
Answer: It allows positioning the brake jaws so the bend will start at the bend tangent line.
Card 9
Question: What kind of metal forming is done by a slip roll former?
Answer: Forming simple curves with a large radius.
Card 10
Question: What kind of metal forming is done by bumping?
Answer: Forming compound curves in sheet metal.