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HELLFIRE GROUND CLEARANCE 9.11 IN.
EJECTOR GROUND CLEARANCE 25.60 IN.
.50 CALIBER MACHINE GUN GROUND CLEARANCE 8.50 IN.
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2.75 IN. ROCKET GROUND CLEARANCE 14.29 IN.
OH-58D WITH STANDARD LANDING GEAR
Figure 2-2. Principal Dimensions and Ground Clearance (Sheet 2 of 4)
2-7
TM 1-1520-248-10
OH-58D WITH RAPID DEPLOYMENT LANDING GEAR
Figure 2-2. Principal Dimensions and Ground Clearance (Sheet 3 of 4)
2-8
TM 1-1520-248-10
1
2
3
4
5
3 4
5
ROCKET TO SKID
CLEARANCE 8.30 IN.
GUN TO SKID
CLEARANCE 8.40 IN.
NOTE
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EJECTOR GROUND CLEARANCE 26.2 IN
.50 CALIBER MACHINE GUN GROUND CLEARANCE 9.0 IN
ATAS GROUND CLEARANCE 15.9 IN.
HELLFIRE GROUND CLEARANCE 9.39 IN.
2.75 IN. ROCKET GROUND CLEARANCE 14.2 IN.
OH-58D WITH RAPID DEPLOYMENT LANDING GEAR
Figure 2-2. Principal Dimensions and Ground Clearance (Sheet 4 of 4)
2-9
TM 1-1520-248-10
Figure 2-3. Turning Radius
2 - 9 . I N S T R U M E N T S , PANELS, AND 2-10. CONTROLS.
CONSOLES.
All controls, except the multifunction keyboard, which
a. Instrument Panel and Console. Figures 2-6 and are part of the helicopter system, along with their
2-7 depict the pilot and CPG instrument panel and operations and functions, are discussed in detail under
pedestal console. Individual panels, indicators, and respective headings throughout this chapter.
display units are indexed for location and identification.
These components are described and illustrated in
more detail under their respective headings. 2-11. CONTROL/DISPLAY SUBSYSTEM.
b. Overhead Console Panels and Center Post a. Description. The control/display subsystem
Circuit Breaker Panel. Figure 2-8 depicts the (CDS) is a data handling and signal processing system
overhead console panels and center post circuit which collects data from the avionics, mast mounted
breaker panel. These panels are covered in detail in sight (MMS), and helicopter subsystems. The CDS
Section XI of this chapter. transforms the data into digital code,
2-10
TM 1-1520-248-10
PARTICLE SEPARATOR
DISCHARGE
(RIGHT SIDE)
Figure 2-4. Danger Area
2-11
TM 1-1520-248-10
Figure 2-5. Crew Station
2-12
TM 1-1520-248-10
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Figure 2-6. Pilot Instrument Panel and Console
2-13
TM 1-1520-248-10
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Figure 2-7. CPG Instrument Panel
2-14
TM 1-1520-248-10
processes, and displays the data to the aircrew on (18) Airborne video tape recorder (AVTR).
demand. The CDS provides the primary interface
control, computations, processing, symbol generation, The R MCPU interfaces with the following systems:
monitoring, diagnostics, and display for helicopter (19) ASE.
subsystems. The interfacing is accomplished by means
of a digital processor, a multiplex data bus, and (20) Armament systems.
associated analog and video interfaces. The CDS
retrieves the respective data from memory and displays (21) Pilot ADSS.
the data for use by the crew or provides it to the using The L MCPU interfaces with the following added
device. The wide range of computational and logical systems:
data processing functions are as follows:
(22) CPG ADSS.
(1) Displays helicopter subsystem data.
(23) AVTR.
(2) Data bus control.
(3) Air data processing. b. Controls and Functions. (Fig. 2-9 and 2-10).
(4) (OH-58D) Airborne target handover system c. Operation. Detailed operation of the CDS is
(ATHS) management. covered under the different modes of operation
( 5 ) I m p r o v e d d a t a m o d e m ( I D M ) throughout this manual.
management.
(6) Communication control. 2-12. MULTIFUNCTION KEYBOARD.
(7) Navigation subsystem management. a. Description. The multifunction keyboard (MFK)
(8) Caution, warning, or advisory monitoring. (fig. 2-9) is located on the lower console immediately
below the multiparameter display panel (11, fig. 2-6),
(9) Engine or transmission monitoring and and is accessible by both crewmembers. The keyboard
control. is tied into both MFDs as a source of entering data
(10) Subsystem diagnostics. such as communication frequencies and channels,
waypoint identifiers, coordinates, navigation data,
(11) Mast mounted sight (MMS) control and WEAPONS PAGE and WEAPONS BIT/SETUP PAGE
display. data, and test mode codes.
(12) Symbol generation. b. Controls and Functions (Fig. 2-9).
(13) SCAS and heading hold control.
c. Operation. Detailed operation of the MFK is
(14) Target and waypoint storage. covered under the different modes of operation
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TECHNICAL MANUAL OPERATOR’S MANUAL FOR ARMY OH-58D HELICOPT(7)
