AIRCRAFT
DA 42 NG AMM
Wings
Doc # 7.02.15
Rev. 4
57-10-00
Page 3
15 Mar 2018
2. Description
Figure 1 shows the wing structure. The wing has top and bottom shells. It has front and rear spars and
a root rib made in three parts. Five ribs hold the fuel tanks between the spars. Flap and aileron control
ribs hold the bellcranks for the control systems.
A rear web closes the trailing edge of the wing. An end rib closes the outboard end of the wing.
A removable GFRP tip attaches to the wing shells and outer rib with screws.
Bonding paste (thickened resin) bonds the wing components to each other. The following section gives
more data about the main parts:
A. Wing Shells
Each wing has top and bottom shells. Each shell has a CFRP skin with a rigid foam core. The fibers
in the layers of cloth which cover the whole wing run at ± 45° to the lateral axis of the wing. The
outer layer of the wing is carbon fiber. The inner layer of the wing is glass fiber.
Some areas have more layers of cloth to give more strength. For example, the area around each
access hole has extra layers of carbon fiber cloth.
The bottom shell of each wing has 8 access holes. These give access to the flap and aileron
bellcranks and fuel tanks. The top shell has a hole for the fuel cap of the outer fuel chamber.
B. Spars
Each wing has two
I
-section spars. The front spar on one side is the same as the rear spar on the
opposite side.
Many layers of uni-directional carbon fiber make the spar caps. The number of layers in the spar
caps decreases from root to tip.
Each spar has a shear web. The shear web has GFRP skins and a rigid foam core. Glass cloth
fillets attach the spar caps to the shear web.
The inboard end of each spar (the 'stub') goes past the root rib. The spar stub is a box-section with
many layers of glass cloth wrapped round the spar caps. Two large bushes bond into the spar stub.
The wing main bolts engage these bushes and attach the wing to the fuselage center section. The
bushes and bolts transmit the wing bending loads into the center section. Figure 2 shows the main
bolt installation.
Summary of Contents for DA 42 NG
Page 933: ...AIRCRAFT DA 42 NG AMM Fuel Doc 7 02 15 Rev 4 28 TITLE Page 1 15 Mar 2018 CHAPTER 28 FUEL ...
Page 1459: ...AIRCRAFT DA 42 NG AMM Lights Doc 7 02 15 Rev 4 33 TITLE Page 1 15 Mar 2018 CHAPTER 33 LIGHTS ...
Page 1711: ...AIRCRAFT DA 42 NG AMM Doors Doc 7 02 15 Rev 4 52 TITLE Page 1 15 Mar 2018 CHAPTER 52 DOORS ...
Page 1853: ...AIRCRAFT DA 42 NG AMM Wings Doc 7 02 15 Rev 4 57 TITLE Page 1 15 Mar 2018 CHAPTER 57 WINGS ...
Page 2071: ...AIRCRAFT DA 42 NG AMM Engine Doc 7 02 15 Rev 4 72 TITLE Page 1 15 Mar 2018 CHAPTER 72 ENGINE ...
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