Diamond Aircraft DV 20 E 2022, Руководство по техническому обслуживанию самолета

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AIRCRAFT
DV 20 E AMM Fuselage
Doc # 4.02.25
Rev. 2
53-10-00
Page 5
15 Mar 2022
G. Spar Bridge
The spar bridge is a rigid GFRP box-section molding. It has layers of carbon cloth on the top and
bottom faces. Each end is a strong web. Carbon cloth gives strength and stiffness to the webs. The
webs bond to the spar bridge to the fuselage shells at the root rib area.
The center area of the spar bridge has 2 pairs of bushes for the wing main bolts. The webs hold
the A and B bolt bushes for the wing attachment. The front face of the spar bridge has a large
bracket for the inner end of the A-bolt. Bonding paste and 8 bolts attach each bracket to the spar
bridge.
The spar bridge also has four attachments for the main landing gear. Refer to Chapter 32-10 for
data about the landing gear attachments.
H. Seat Back
The seat back is a rigid GFRP molding. Carbon tape gives strength and stiffness to the top of the
seat back. A rigid GFRP insert bonds inside the top of the seat back. The insert has strong-points
for the pilot's safety belts.
The seat back bonds to the top face of the spar bridge. It also bonds to the fuselage shells.
I. Rollbar
The rollbar is a rigid GFRP molding. Carbon tape gives strength and stiffness to the rollbar. The
rollbar bonds to the inner face of the fuselage shell around the rear cockpit cut-out.
J. Aft Control Bulkhead
The aft control bulkhead is a rigid GFRP molding. The middle part has top and bottom flanges
which hold the control bellcranks. The bulkhead bonds to the aft face of the spar bridge. It also
bonds to the fuselage shell.
K. B-bulkhead
The B-bulkhead is a large rigid GFRP molding. The main part of the bulkhead has a slope of about
45°. The middle of the bulkhead makes a box for the fuel tank.
L. Half bulkhead
The half bulkhead is a rigid GFRP molding. It bonds to the bottom of the fuselage shell just aft of
the B-bulkhead. It has a guide bearing for the elevator control pushrod and holes for the rudder
control cables. It has a cut-out on the right side for a cable conduit.