CH47 D Cargo Handling System Cargo Handling Terminal
- Slides: 47
CH-47 D Cargo Handling System
Cargo Handling
Terminal Learning Objective (TLO) n n n Action: Describe the components, operational characteristics, functions, limitations and emergency procedures of the CH-47 D Cargo Handling Systems Conditions: In a classroom, and given a student handout Standards: Correctly answer in writing, without reference, four of six questions pertaining to components, operational characteristics, limitations, functions, and emergency procedures of the CH-47 D Cargo Handling System, IAW TM 1− 1520− 240− 10 (Operator’s manual) and the student handout
Terminal Learning Objective (TLO) – (Cont. ) n Safety Requirements: None n Risk Assessment Level: Low n Environmental Considerations: None n Evaluation: Each student will be evaluated on this block of instruction during the third written examination. This will be a criterion type examination requiring a GO on each scored unit. You will have 90 minutes for the exam
Learning Step/Activity #1 n Describe the components, operational characteristics, functions, emergency procedures and limitations of the Cargo Ramp/Door
Cargo Ramp/Door n Located: n n Operated: n n n Loading and Unloading Personnel and Cargo Maximum Weight: n n Hydraulically Primary Use: n n Sta. 486 3, 000 LBS or 300 PSF Cargo Door: n n n Jettisonable Provide Closure Contains a emergency exit panel
Components – Cargo Ramp
Ramp Control Valve n Located: n n Between Sta. 482 and 502 R/H side Three position: n n UP STOP DN (Down) Purpose: n Used to Stop the Ramp between: n n Full UP Full Down
Actuating Cylinders n Located: n n n L/H and R/H side of the Ramp Hydraulically Contains: n Mechanical locks n Prevents: n Accidental opening Keeping ramp closed n Hydraulically unlocked n
Cargo Door Actuated Motor n n n Located: Inside the ramp Contains: Reversible motor (Extend and Retract) Controlled: Sequence valve
Sequence Valve n Located: n n Use: n n n R/H side Sta. 490 Mechanically operate ramp Sequences: n Extension n Retraction Purpose: n Keep cargo door: n Retracted n Do not press Valve Plunger n Do not Unlock unless ramp is Down
Pressure Actuated Valve n Purpose: n n Stop ramp operation: n Extending/Retracting cargo door Red plunger: n Manual override n Use ONLY if ramp fails to operate normally
Ramp PWR Switch n n Located: Overhead hydraulics panel Switch: Three position: n n n OFF ON EMERG (Emergency)
Utility Return Control Module n Located: n n Purpose: n n n L/H side Sta. 534 Central collection point Transfer cylinder: n Holds fluid (Actuators) Indication: n Filter indicator
Emergency Utility Press Valve n Located: n n R/H Side Ramp Sta. 527 Purpose: n Operate ramp: n Pressure from APU Start Accumulator
Learning Step/Activity #2 n Describe the components, limitations, emergency procedures and operational characteristics of the Triple Cargo Hook system
Triple Cargo Hook System Page: 5 -5 -1 n Rated: n n Center – 26, 000 LBS Forward – 17, 000 LBS Aft – 17, 000 LBS Tandem – 25, 000 LBS (Fwd and Aft Hooks)
Center Cargo Hook n n n Mounted: Sta. 331 (Inside the Cabin Escape Hatch) Beam Assembly: Rotates, Pivots and allows the Hook to Swing Air Charge: Minimum – 2, 000 PSI Types of opening: Hydraulically, Pneumatically, and Manually Manual Release: 2408 -13 Entry
Forward and Aft Cargo Hook n Rated: n n n 17, 000 LBS 88° degrees (Fwd and Aft) 58° degrees (Left and Right) n Located: Sta. 249 Sta. 409 n Accessible: n n n Ground Personnel Hook load 18 -22 LBS Types of Release: n n Electrically (Normal/Emergency) Manually
Cargo Hook Control Panel n MSTR (Master) Switch: n n Hook Switch: n n n MSTR RESET OFF ARM Five position Switch position determines Hook Load Lights: n n n Fwd and Aft Illuminate – 150 LBS Sensors
Hoist Operator's Control Panel n n n Located: R/H side Sta. 320 Three Position: ARM, RMTE (Remote) and RESET Activated: MASTER switch – ARM
Master Caution/Advisory Panel n Purpose: Indicates respective Hook – Open n n Turn lights off: - Master switch – RESET Dual Hook Fault Lights: n n Indicates loss of electrical power Fwd and Aft Hook – Manually
Jettisoning External Cargo n Primary Method: n n CARGO HOOK EMERG switch – REL ALL Alternate Method: n Forward, Center and Aft hook release lever – Pull aft Page: 9 -2 -1
Learning Step/Activity #3 n Describe the components, limitations and operation of the Cargo Winch/Rescue Hoist system
n Cargo Winch and Rescue Hoist System Located: n n Heater closet (Compartment) Hydraulic motor Mechanical brake Cable length: n n Purpose: n n n 150 feet/1/4 inch (Steel) Aid loading/Unloading – Cargo Hoist loads – Thru rescue hatch Accessories Storage: n n Pulleys Cable/Hook quick disconnect
Cable/Hook Quick Disconnect Cover Guard Cap Quick Disconnect Device n Guard Cover – Must be installed
Selector Lever n Mounted: n n Use: n n Top of the winch assembly Select Mode of operation n RESCUE n CARGO Normal Operation: n n No. 1 DC Bus No. 1 PDP
Cable Cutter Arming Device n Located: n n Back wall Sta. 95 Arming Device: n n Installed Winch – CARGO position
Maximum Load n 12, 000 LBS with the aid of pulleys
Straight Line Pull 3, 000 LBS
One (1) Pulley Attached 6, 000 LBS
Two (2) Pulley Attached 9, 000 LBS
Additional Pulleys 12, 000 LBS
Winching Out
Operators Manual Caution n Do not exceed 3, 000 pounds single line pull. Overload will result in the winch overload switch actuating to stop the winch Page: 4 -3 -8
Winching Operation n Reel in speed: n n Remove slack: n n Applying loads Limit switches: n n n Single line pull – 0 to 20 feet per min (Cargo mode) IN OUT Provide slack: n Load is secure n INTERNAL Load
Operators Manual Caution n To prevent dangerous electrical shock to personnel being hoisted, the cable must touch the Ground or Water prior to contacting personnel Page: 4 -3 -13
Rescue Operation n n n Rescue Mode – Hoisting light loads Selector Lever – RESCUE Position Cargo Hook – Removed Structural Limit – 600 LBS max Reel in Speed – 0 to 100 feet per min In Limit Switch
Cable Cutter Device n Cable Cutter Device: n n Must be installed Pulleys: n n n Sta. 140 Sta. 120 Sta. 331 (Cutter device)
Hoist Controls n Located: Cockpit overhead panel n n n HOIST MASTER switch – REMOTE, OFF and PLT Rotary Control Switch – IN/OUT Cable Cutter Switch – CABLE CUT and ON (Red guarded)
Hoist Operator's Panel n Located: R/H side Sta. 320 n n n CARGO HOOK RELEASE CABLE CUTTER (Red guarded) Toggle Switch – Winch cable IN/OUT PRESS TO TALK Winch Arming Trigger
Winch Control Valve n Located: n n Sta. 120 L/H side Use: n n n Emergency Loss of electrical power Break shear wire Push in plunger Rotate knurled knob Return knob – Center (OFF)
Operators Manual Caution n When the winch is operated in emergency mode, the cable limit switches are disabled Page: 4 -3 -9
Check on Learning n What must you do to cause the ramp to raise or lower if it fails to operate normally? n n What is the primary method of jettisoning external cargo? n n EMER REL ALL switch What caution must be observed when operating the cargo winch in the emergency mode? n n Press the red button on the Pressure Actuated Valve Cable Limit Switches are inoperative How is the ramp kept closed (up) and locked? n Mechanical Locks
Summary
Don’t Forget: EP’s and Limitations!
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