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4.12 MEDICAL EVACUATION (MEDEVAC) SYS-TEM.
The MEDEVAC System (Figure 4-20) includes two medical stations positioned longitudinally on each side of the forward cabin. Each station includes two electrome-chanical litter lifts that support two litter platforms. The platforms are positioned to accommodate up to four pri-mary litter patients or six ambulatory (seated) patients. When the situation requires multiple patient evacuation, two Standardization Agreement (STANAG) litters can be placed on the .oor under the forward lifts for a total of six litter patients. Litter lighting is provided for each patient. Provisions to support intravenous (IV) .uid bags, are mounted overhead in the cabin and along the face of the doorpost panels. A modular medical cabinet containing oxygen system indicators and controls, provisions for carry-on medical equipment, and storage of medical sup-plies is installed at the aft bulkhead between the two troop seats. Three crew seats are provided in the cabin for the crew chief/medical attendants. The medical life support equipment includes an oxygen system, suction system, and outlets for 28 VDC and 115 VAC 60-cycle electrical power. Controls for the medical stations are located on the door-post panels, one panel for each station. Blackout curtains are provided between the cockpit and cabin and for the cabin windows.
4.12.1 Medical Stations. Each station (Figure 4-21) provides accommodations for two primary patients and one secondary patient or three ambulatory patients. The stations include the dual electromechanical litter lifts which support the litter platforms, ambulatory patient/litter platforms, and the adjacent doorpost control panel.
4.12.2 Litter Lift System. The litter lift system consists of left and right litter platforms stations to provide transport of six littered patients, six seated patients, or cargo or a combination of these. The dual station system supports and controls the positioning of two litter platforms. Both plat-forms may be moved to the ceiling to accommodate cargo on the .oor or moved to the .oor to accommodate ambu-latory (seated) patients. The top side of the upper platform is con.gured with the attaching brackets for the ambulatory seats. The litter platforms are moved by medical attendants to change the level or tilt. Loading is simpli.ed by allowing patients to be loaded at .oor level and moved up to their .ight position. The system utilizes electromechanical non hydraulic motor mechanisms that are shielded from the cabin with a steel curtain for the protection of both person-nel and equipment. In the event of a power failure, a manual mechanical back-up system is provided to actuate the lift mechanism. The litter lift system is designed to quickly and easily:
1.
Load and unload patients.
2.
Adjust height and tilt to accommodate patient size and needs.
Change 3 4-47
LITTER
AFT
SIDE
LIFT
FORWARD SEAT AFT COMPONENT TRACKS TROOP MODULE SEAT
AB0383
SA
Figure 4-20. MEDEVAC System
3. Change between ambulatory patient, littered patient and cargo con.gurations.
Each station operates independently of the other to per-mit several loading variations. Variations include:
1.
One to three littered patients on one side and one to three seated patients on the other.
2.
One to three littered patients on one side and cargo on the other.
3.
One to three seated patients on one side and cargo on the other.
4.12.3 Ambulatory Patient Con.guration. The two medical stations can be recon.gured to seat six ambulatory patients (Figure 4-22). An additional two ambulatory pa-
tients may be seated on the two aft troop seats for a total of eight patients. Seating for the patients is contained in the upper patient litter platform. The lower platform must be positioned to the .oor position and the upper platform to the seat position. When the platforms are in place, the upper portion of the ambulatory platform is raised to act as a backrest. Restraints, consisting of seatbelts and shoulder harnesses, are built into the platform and headrests for the three ambulatory patients. Headrests, stored in the ceiling, are lowered in position and secured to the backrest by lock-ing pins.
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