Amt 120

Question 1

who are the wright brothers

Answer 1

orville wright
wilbur wright

Question 2

when was aircraft wood structure introduced

Answer 2

During world war 1/ 1930s

Question 3

Desirable characteristics

Answer 3

Light weight
LEss expensive
less special tooling required
Long life when properly preserved

Question 4

Aircraft that were produiced in 1930s and 40s have made use of wood for structural

Answer 4

wing spars
ribs
control surface
fuselage

Question 5

how to differentiate hard wood and soft wood

Answer 5

Their cellular structure.

Question 5

Comes from decidous broadleaf trees

Answer 5

Hardwood

Question 6

Where do hardwood comes from?

Answer 6

decidous broadleaf tree

Question 6

examples of hardwood

Answer 6

Mahogany

Question 7

Comes from evergreen trees that bear fircones

Answer 7

Soft wood

Question 8

examples of softwood

Answer 8

Sitka spruce

Question 8

Where do softwood comes from

Answer 8

From evergreen trees that produce fircones

Question 9

It grows in canda and the united states of america. It is a brownish yellow satin in appearance

Answer 9

Sitka spruce

Question 10

Where do sitka spruce comes from

Answer 10

America and its color is brownish yellow satin in appearance

Question 11

a hardwood and grows most parts of europe. Yellow white or brown white, strong and does not split

Answer 11

Birch

Question 12

characteristics of birch

Answer 12

A hard wood that grows in europe its color is yellow white or brown white.

Question 13

a hardwood that is tough and hgas good shock resistance qualities

Answer 13

Ash

Question 14

A softwood grown in canada

Answer 14

Douglas Fir

Question 15

three parts of softwood

Answer 15

Solid wood
laminated wood
plywood

Question 16

used in the construction of box spars.

Answer 16

plywood

Question 17

each sheet of thin wood is called

Answer 17

veeners

Question 18

it has reddish brown appearance

Answer 18

Mahogany

Question 19

used to form a specific shape/size

Answer 19

laminated wood

Question 20

Process for laminating wood

Answer 20

Prepare the laminates
apply glue on the matting surfaces
clamp the laminates together
wait until glue sets

Question 21

the external cover of the wood

Answer 21

bark

Question 22

part of the tree which is alive or partially alive and still carries sap/liquid

Answer 22

sapwood

Question 23

is a part of the tree which is dead and does not carry sap. it supports the tree

Answer 23

Heartwood

Question 24

concentric layers of wood thet can be seen at the end of the tree trunk that has been cut perpendicular to its length.

Answer 24

Annual ring

Question 25

form in the first season of the year has large cells. light rings- spring wood- representing fast growth.

Answer 25

spring wood

Question 26

formed in the later growing season dancer and stronger, dark rings- represents slow growth

Answer 26

summerwood

Question 27

A separation between the annual ring layer

Answer 27

shake

Question 28

Indicates the direction of the wood fibers relative to the axis of the tree or along the edge of a piece of cut

Answer 28

grain

Question 29

wood in which the fibers have been damaged by compression load

Answer 29

compression wood

Question 30

A portion of a branch or a limb of a tree which has been incorporated into the body of the tree (is deformation of grains caused by the growth of a branch)

Answer 30

knot

Question 31

a knot resulting from growth of a twig/branch

Answer 31

pin knot

Question 32

a radial crack that runs across the grain line

Answer 32

check

Question 33

disintegration of actual wood substance by the action of fungi

Answer 33

decay

Question 34

lengthwise separation of fibers

Answer 34

split

Question 35

a knot that runs through the depth of a beam perpendicular to the annual ring

Answer 35

a structulae failure in wood caused by the application of too great compressive overload