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FAA Rigger's Study Questions Solved 100% Correct
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FAA Rigger's Study Questions Solved 100% Correct
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FAA Rigger's Study Questions Solved 100% CorrectWhich of the following statements most accurately describes the radial seam used in a bias-
constructed canopy? - ANSWER The seam has two rows of stitching on each side of the channel
that encloses the suspension line
What is the reason for leaving slack in the fabric between attachment points of suspension
lines on a block-constructed canopy? - ANSWER Reduces strain on canopy during opening
shock
"Porosity", as used in parachute terminology is expressed in terms of the... - ANSWER rate of
airflow through the canopy
What is one advantage of bias construction of parachute canopies? - ANSWER Provides
additional strength
Traditionally in square parachutes, the warp yarns run... - ANSWER chordwise
Which statements are true or false?
A ram-air canopy...
(1) has an upper surface, lower surface, airfoil shaped ribs, and a rectangular platform.
(2) may be packed and deployed similar to a conventional round canopy - ANSWER only no. 1 is
true
, Select the statement which correctly refers to the assembly of the suspension lines and
canopy (standard type parachute) - ANSWER The suspension lines are enclosed in channels
which are produced by the radial seam stitching
When trimming a ram-air canopy, what flight characteristic is enhanced by pitching the
nose down? - ANSWER Stability
Why is a zigzag stitching used to complete the attachment of suspension lines to the riser
links? - ANSWER It allows elongation of the suspension line without overstressing the thread
Hand tacking should be tied off with what kind of knot? - ANSWER A surgeons knot and a
locking knot
Which statement is correct concerning sewing and stitching as applied to parachute repair? -
ANSWER Seams joined by zigzag stitching are capable of great elongation without creating
excessive tensile stress of the thread itself
What two types of stitching are normally used in the manufacture and maintenance of
parachutes? - ANSWER Lock stitch and hand stitch
Which of the following has the least effect on the overall strength of a sewn seam? -
ANSWER Moisture content of the fabric at the time of sewing.
Why should the elasticity of a seam or stitching be slightly greater than that if the fabric it joins?
- ANSWER So that the material will support its share of the expected load.
Which type of stitch is used most frequently in the repair and maintenance of parachutes? -
ANSWER Lockstitch
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