FREE AVIATION AND STUDY GAMES ABOUT AIRFRAME

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FREE AVIATION AND STUDY GAMES ABOUT AIRFRAME

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -26 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: When drilling stainless steel, should the drill be turned fast or slow?

Answer:

It should be turned slowly.Question 2: What is the purpose of a sight line when laying out sheet metal to be bent in a cornice brake?

Answer:

The sight line allows the jaws of a cornice brake to be positioned so the bend made by the brake will start at the bend tangent line.Question 3: What is meant by setback when bending a piece of sheet metal in a cornice brake?

Answer:

Setback is the distance the jaws of the brake must be set back from the mold line to form the bend.Question 4: What is meant by the bend allowance used in making a bend in a piece of sheet metal?

Answer:

The bend allowance is the amount of metal that is actually used in making the bend in a piece of sheet metal.

Question 5: What is the main function of throatless shears in an aircraft sheet metal shop?

Answer:

Throatless shears are used to cut mild carbon steel up to 10-gage, and stainless steel up to 12-gage.They can be used to cut irregular curves in the metal.

Question 6: What must be done to the flanges of an angle for it to be curved?

Answer:

The flanges must be stretched for a convex curve and shrunk for a concave curve.

Question 7: What special precautions must be taken when repairing a radome?

Answer:

Nothing must be done to the radome that will affect its electrical transparency or its aerodynamic strength.Question 8: What are three requirements for a repair to a piece of sheet metal aircraft structure?

Answer:

The repair must restore the lost strength and rigidity, and it must not change the aerodynamic shape of the part.Question 9: What determines whether a piece of sheet metal should be dimpled or countersunk when installing flush rivets?

Answer:

The thickness of the sheet. Countersinking should be done only when the thickness of the sheet is greater than the thickness of the rivet head.Question 10: What kind of stress is in the upper skin of an aircraft wing in flight?

Answer:

Compression.Question 11: What determines the minimum bend radius that can be used with a piece of sheet metal?

Answer:

The thickness of the material and its hardness.

Question 12: What kind of metal forming is done by a slip roll former?

Answer:

Simple curves with a large radius.Question 13: What is the minimum edge distance allowed when installing rivets in a piece of aircraft sheet metal structure?

Answer:

Two times the diameter of the rivet.Question 14: Why should aluminum alloy rivets be driven with as few blows as is practical?

Answer:

Excessive hammering will work-harden the rivets and make them difficult to drive.

Question 15: What type of device is a Cleco fastener?

Answer:

A patented fastener that is inserted in the rivet holes and is used to hold two pieces of sheet metal together until they can be riveted.Question 16: When hand-forming a piece of sheet metal that has a concave curve, should the forming be started in the center of the curve, or at its edges?

Answer:

Start at the edges and work toward the center.Question 17: When making a riveted repair to an aircraft sheet metal structure, which should be the stronger, the shear strength of the rivet, or the bearing strength of the metal sheet?

Answer:

The two strengths should be close to each other, but the bearing strength of the sheet should be the greater.

Question 18: What kind of metal forming is done by bumping?

Answer:

Compound curves in sheet metal.

Question 19: What kind of repair can be made to a small damage of the core material and one face sheet of a piece of aluminum alloy honeycomb structure?

Answer:

A potted compound repair.

Question 20: What is meant by a joggle in a piece of sheet metal?

Answer:

A joggle is a small offset near the edge of a piece of sheet metal that allows the sheet to overlap another piece of metal.Question 21: What is the recommended transverse pitch to use when making a riveted two-row splice in a piece of sheet metal?

Answer:

Three-fourths of the pitch of the rivets in the rows.

Question 22: What causes crazing in a piece of transparent acrylic material?

Answer:

Uneven stresses in the material, usually caused by heat.

Question 23: What type of metal should be hot-dimpled?

Answer:

7075-T6, 2024-T81 aluminum alloys, and magnesium alloys should be hot-dimpled.Question 24: How is the point of a twist drill ground that is to be used for drilling transparent acrylic material?

Answer:

The cutting edge should be dubbed off to a zero rake angle, and the included angle of the tip should be ground to 140 degrees.

Question 25: Why are the lightening holes in a sheet metal wing rib flanged?

Answer:

Flanging the lightening holes gives the rib rigidity.