問題一覧
1
What type of seam is this?
French fell
2
What must be done prior to shrinking synthetic cloth?
Calibrate the iron
3
How often should fabric be tested?
100 hours
4
What type of stich is this?
plain over throw
5
What can cause damage to fabric?
1.sunlight (UV rays) 2. moisture
6
What can cause stall stop on leading edges?
thick seams
7
How can fabric be tested ?
breaking strength test
8
Prior to performing rib stiching, what tape should be applied?
reinforcement tape
9
When performing a breaking strength test, the measurement is taking from the WEIGHT when the fabric breaks?
true
10
What damage will nitrite and butyrate dope cause?
1. Nitrite is very flammable Dissolve primers 2. Cause wrinkles
11
___ is a spiral crack in the paint ?
ring worm
12
What is reinforcement tape?
provides strength to fabric for fasteners
13
On a seyboth mechanic fabric strength tester. Which of the following would indicate weak strength on the scale?
red
14
Before using an iron to shrink synthetic fabric you must calibrate it?
true
15
What must be done prior to covering an aircraft in fabric?
1. Inspect a/c structure for damage 2. Ensure wood structure is protected with approved wood varnish 3. Ensure metal structure is protected with approved metal primers 4. Ensure wood and metal structures are dope protected (dope proof)
16
A seyboth mechanical fabric strength tester uses what kind of scale?
colour coded
17
What are thinners used for?
reduce viscosity of paint or dope
18
What are retarders used for ?
1. Slow drying solvent 2. Used in high humidity 3. Prevents blushing and creates a glossy finish
19
Nitrate / butyrate are two approved doping materials?
true
20
Butyrate dope material can be applied over nitrate dope material?
true
21
Nitrate dope material can be applied over butyrate dope material
false
22
What additive will prevent UV rays from entering and weakening fabric?
aluminum paste
23
If fabric is torn and requires to be repaired, what type of stiching can be used?
baseball
24
Two ways to test fabric strength
1. breaking strength test 2. mechanical test
25
On a seyboth mechanic fabric strength tester, which of the following would indicate strong strength ?
yellow
26
Where is fungicidal paste required?
1. Cotton and linen cloth subject to mildew 2. Added to the first coat of dope
27
What direction should seams be sewn in?
parallel to line of flight
28
What type of seam is this?
folded fell
29
What protective coatings can be used to protect wood surfaces from dope?
1. Aluminum Foil 2. Celllulose Tape 3. Dope Proof Paint
30
4 types of tapes used are ?
1. finishing tape 2. anti chaffing tape 3. inter rib bracing 4. reinforcement type
31
What are three types of rib stiching?
1. single loop 2. double loop 3. blind
32
What type of stitch is this?
baseball stitch
33
You DO NOT need to protect wood or metal structure prior to attaching fabric ?
false
34
Rejuvenators can be used on “good and bad” fabric to restore the fabric to its original condition ?
false
35
Where is nitrate dope used?
Often used as first and second coats prior to applying Butytrate
36
Finishing tape is installed after the fabric is stretched?
true
37
What is inter rib bracing?
Holds ribs in place prior to fabric
38
What metals do not require dope proofing?
1. Clad aluminum 2. Stainless steel
39
Maule tester. If the fabric breaks before reaching acceptable range you must?
replace fabric
40
Doping materials are flammable. They should be used in well ventilated area with proper fire protection
true
41
What type of patch should be used for damage that CANNOT be closed by sewing?
sewn in patch
42
A patch crossing 1 rib is considered a major repair?
false
43
What percentage of fabric strength must be maintained when performing a fabric test?
70%
44
What is finishing tape?
provides weather protection over rib lacing, screws, clips
45
What is “anti-chaffing” tape?
tape over sharp edges to protect fabric wear
46
How wide does the strip need to be to perform a breaking strength test?
1”
47
On a seyboth mechanic fabric strength tester, which of the following would indicate good strength on the scale?
green
48
How can you shrink natural cloth?
water
49
How can fabric be attached?
1. self tapping 2. blind rivets 3. wire clips 4. stitching
50
What is considered a major fabric repair?
If a patch crosses 2 ribs it is considered a major repair
51
Rejuvenators can be applied by spraying or brushing on?
true
52
What will cause damage to primers and finishes? Ex. Damage includes penetrating, wrinkling, lift or dissolve
nitrate / butyrate dope
53
Grommets are small rings installed to drain moisture. They are located in the lowest points of the plane?
true
54
What type of seam is this?
plain overlap
55
How can you shrink “SYNTHETIC cloth” fabric?
iron on gentle / low heat
56
What type of scale does a maule mechanic fabric strength test use to indicate fabric strength?
calibrated scale
57
What are inspection rings used for?
reinforce fabric & inspection
58
Where should the 1st stitch be located when performing rib stiching?
1/2” from leading edges
59
A dope on patch requires only dope and fabric. No other fasteners or sewing required?
true
60
How can cracks be repaired in doping material ?
1. seal 2. replace fabric 3. remove and reapply Finnish
61
When performing a strength breaking test, where should the fabric be removed from?
high exposed areas
62
What dope is preferred, nitrate or butyrate ?
butyrate 1. will burn slower 2. greater taunting action to fabric