Fabric Test
Fiberglass is not affected from what
Chemicals and moisture
What is the danger associated with cellulose acetate nitrate dope
Highly flammable
What can be used to ensure rib alignment when shrinking fabric
Rib lacing tape
What standard must all fabric types conform to for installation on certified aircraft?
SAE AMS - for synthetic TSO - for cotton
What is the advantage of utilizing the envelope method aircraft covering
Speed and machine sewn seams that are superior to hand sewing
What team beat Alabama this weekend allowing the DAWGS to take the #1 spot?
Texas A&M
What type of hand stitch is commonly used for repairs of fabric
The baseball stitch
How are polyester fabrics taunted?
Use of heat applied with irons calibrated to proper temp
How bad did the DAWGS beat Auburn this weekend?
34-10
Fabric repairs always should always be
70% or greater of original state
What visual identification does certified fabric possess?
A repeated stamp on the fabric
What does AMS stand for?
Aeronautical Material Specifications
What determines the spacing for rib stitching
Airspeed if the AC and the area exposed to propeller wash
Name the two types of dopes used in aircraft fabric
Cellulose nitrate dope Cellulose acetate butyrate
Name the two organic fabrics
Cotton and linen
What is the most extensively used synthetic fabric?
Dacron
Define bias as related to fabric.
Diagonally across the warp and fill
Define fill as related to fabric.
Direction across the width of the woof as it comes off the roll.
Define warp as related to fabric.
Direction along the length of fabric as it comes off the roll
In the covering process, when is surface tape applied?
Doped on after the 1st or 2nd coat
Name two methods for covering aircraft structures
Envelope and blanket method
Name the four types of sewn seams
French fell Modified fell Folded fell Plain lap
What grade cotton is required for aircraft fabric?
Grade A or better
What is used to reinforce drain openings on aircraft fabric?
Grommets made from plastic and aluminum washers
When sanding fabric, it is important to do what?
Ground the part to prevent ESD
What purpose does plasticizers serve in coatings
Keep the finish flexible in order to prevent cracking
Name three ways to mechanically bond fabric to ribs or other underlying structures
Lacing chords Screws Rivet and clips
What knot is commonly used in rib stitching?
Modified service knot
What are the two types of fabric in use for aviation?
Organic and synthetic
Fabric repairs should reinstate two qualities, what are they?
Original strength and aerodynamic qualities
What is the purpose of silver butyrate dope in finishing fabric
Protects fabric from UV rays
What causes blushing in a dope finish?
Rapid temp change/humidity change
What must be done to structures that will come in contact with dope finishes?
The must be cope proofed to stop the solvent in the dope from stripping the finish
What is the purpose of reinforcing tapes?
To prevent the pacing chord or fabric attaching devices from pulling through the fabric covering and also used for inter bracing.
What is the purpose of surface tape?
To provide additional wear resistance over the edges of fabric forming structures
What two factors determine the quality and strength requirements of fabric for aircraft
Wing loading of the AC and VNE
How are cotton and linen fabrics taunted?
With tautening dopes
Which of the following is a hazard associated with sanding on fabric covered surfaces during the finishing process?
static electricity buildup/discharge
Fungicidal dopes are used in aircraft finishing as which coat in the process?
the first coat to prevent fabric rotting and are applied thin enough to saturate the fabric