Rockwell Commander 112 - AIRCRAFT STRUCTURES

ROCKWELL
COMMANDER
112/B/TC/TCA
MAINTENANCE MANUAL
SECTION I
GENERAL
IN FORMA TION
Model 112 (126 and subs) •.•.•••••• 26501bs.
Model 112B .•..••••••.•••..••.••• 2800 lbs.
Model 112TC ••••..•.•.•••...••..• 2850 Ibs.
Model 112TCA • • . • . • . • . . . • . • . • • • • 2950 Ibs.
C. G. Limit, Gross Wt. FWD (Normal Category)
Model 112 (thru SiN 125) ••.•.... 15. fifo MAC
Model 112 (126 and subs) •...•••• 18.8% MAC
Model 112B •...•....•..•..••••• 24.58% MAC
Model 112TC ....•••..........•• 24.84% MAC
Model 112TCA •.......•.•...••• 26.68% MAC
c. G. Limit, Gross Wt. AFT (Normal Category)
Model 112 ..................... 31. 5fifo MAC
Model 112/B/TC/TCA .•••••••••• 31.77% MAC
WING
Airfoil Section (Chordwise). NACA 632415 Modified
Root Chord •.•........•.•.•.•..••...•... 70.30
Tip Chord
Model 112 • . . . . • . . . . . • . . . . . . • • . • • 35.15 in.
Models 112B/TC/TCA •..•••••.•.•• 32. 10 in.
Mean Aerodynamic Chord
Model 112 • . . • • . . . • . . . • . • • . • • . • . • 55. 05 in.
Model 112/B/TC/TCA • • . • . • . • . • . • 59.84 in.
Angle of Incidence, tip ..•••••••••••••••..•. 0
0
Dihedral (at main spar) • . . . • . • . . • . • • • . • . . . • • 7
0
Aspect Ratio
Model 112 . . . . • . . . . . • • • • • . • • • • • • • . . . .• 7.20
Models 112B/TC/TCA ................. 7.85
HORIZONTAL STABILIZER AND ELEVATORS
Span .................... 161. 50 in. (13 '_5. 50 If)
Airfoil Section •..•••...• NACA 66-010 Modified
Root Chord ..•..•••••••.••••• • • . • • •• 47. 46 in.
Tip Chord ••.•.•.•••••.••••.••••••.• 18. 36 in.
Mean Aerodynamic Chord ••••••••.••• 35.00 in.
Angle of Incidence .•......••....••..••.... _20
Dihedral •...•... • • . . • . • • • • • • • . • • . . . . . . . • 0
0
Aspect Ratio .•.....••••.•••••..••.•...•• 5. 38
Taper Ratio .• . . . • • • • . . . . • . . • • . . • • • . . • . . O. 39
VERTICAL STABILIZER AND RUDDER
Airfoil Section ...•..••••••..•... NACA 66-012
Root Chord
Model 112 • . . . . . . • • • • • • • • • • • • • • • 71.20 in.
Model 112B/TC/TCA •.•••••••.••• 80.70 in.
Mean Aerodynamic Chord
Model 112 • . . . . . • • • . • • • • • . • . • . • • 50.90 in.
Model 112B/TC/TCA ••••••••••.•• 56.81 in.
FUSELAGE
Cabin Interior - Height •.•.•..••..•..•• 49.00 in.
- Width •.•.•••.•.•.•..• 47. 00 in.
- Length. . . . • • . • . . . . . . .. 75.00 in.
- Volume ....••......... *99 cu. ft.
*Rudder pedal to back of 2nd seat.
Baggage Compartment Interior -
-
Volume ••...•.•......•
22 cu. ft.
2001bs.
- CapaCity .•....••...••.•
AREAS
Wing
Model112 •...•..•..•....•.•..
Models 112B/TC/TCA (incl glove)
Aileron ••.........••....••......•
Flaps •.....•....•.......•.•.....
Horizontal Stabilizer (incl elev. ) •...
Elevators (incl tabs) •••.•...•.....
Vertical Stabilizer (incl rudder)
Model 112 •...•.•••••••••.....
Models 112B/TC/TCA •.••....••
Rudder
Model 112 •...•.•••.•.•.•.•...
Models 112B/TC/TCA •...•...••
152.00 sq. ft.
163.81 sq. ft.
11. 00 sq. ft.
18.00 sq. ft.
33.64 sq. ft.
18.
00 sq. ft.
17. 00 sq. ft.
22.36 sq. ft.
5.00 sq. ft.
5.75 sq. ft.
FUSELAGE AND WING STATIONS
The station diagram shown in Figure 1- 2 provide s a
convenient method for identifying and locating refer-
ence points on major components of the fuselage and
wings. These reference points are numbered in
inches. The fuselage stations are numbered from
zero to 298.50 inches aft of zero. Rib stations of the
wing and horizontal stabilizer are measured from the
centerline of the fuselage outboard, along the surface
leading edge. The top of the vertical stabilizer rep-
resents the highest reference plane which is 101.00
inches above ground level. References to fuselage
and wing stations numbers and Z lines are used as a
means of pin- pointing the location of structural and
system component installations.
AIRCRAFT STRUCTURES
FUSELAGE
The fuselage consists of the nose section, center
section and aft section. The nose section extending
from fuselage station 22.00 to 62.50 houses the power
plant and retractable nose landing gear. Nose landing
gear doors, which open and close as the gear is ex-
tended or retracted, form an aerodynamically smooth
nose section during flight. The nose section is joined
to the center fuselage section at fuselage station 62.50,
which is also the location of the engine firewall. The
center fuselage, which contains the main cabin area
and baggage compartment, extends from fuselage sta-
tion 62.50 to 178.00 where it is joined to the aft fuse-
lage section. This section, which houses the seats
for pilot and three passengers, has two doors that
afford easy access to the aircraft from either side.
The pilots area is equipped with a wide-vision wind-
shield and large door windows to assure maximum
1-3
Copyright Commander Owners Group 2013 All Rights Reserved
**unofficial copy**