1D1IW Multirole Twin-Engine Aircraft

This lightweight twin-engine was designed to carry passengers or cargo to and from any unpaved strip 400 m (1,300 feet) long and having a minimum strength of 5 kg/cm2 (71.1 pounds per square inch). The air­craft was intended for around-the-clock, all-weather use. Its APU sup­plies the necessary power for all loading and unloading operations.

Its power unit—two TV7-117 turboprops rated individually at 1,840 kw (2,500 ch-e)—and fuel system were specially designed to allow a limited use of diesel oil. The engines drive reversible-pitch propellers. The aircraft can fly and land with one engine inoperative, and it can be equipped with floats or skis. The twin-boom architecture with a high – set tailplane was used for ease of entry to the rear fuselage; the rear end opens upward, clearing the way for direct access to the cargo hold: length, 4 m (13 feet, 5.4 inches); width, 1.48 m (4 feet, 10.3 inches); height, 1.6 m (5 feet, 3 inches); volume, 6 m;i (211.89 cubic feet). At 1.5 m (4 feet, 11.1 inches), the sill height of this hold permits direct trans­fers to and from truck beds. All other loading problems are handled by the integral ceiling hoist.

The 101M was created to handle five basic missions:

—transport of field hospitals that can be set up quickly in case of emergency (disasters, accidents, epidemics)

—evacuation of casualties and the critically ill

—transport of supplies, medicines, and relief workers in the affected areas

—transport of geological expeditions and the like to remote or inac­cessible locales —forest fire extinguishment

To fulfill its purpose, the aircraft could carry a variety of loads:

—everything required for a complete airmobile field hospital in eight containers attached to the underwing store stations, plus the nec­essary medical staff (ten to twelve persons); total weight, 2,000 kg (4,400 pounds)

—eight to twelve sick or wounded persons on stretchers, plus the medical assistant; medical personnel, survivors, badly burned per­sons, and the like; total weight, 1,000 kg (2,200 pounds)

—various other loads, solid or liquid

Loading a stretcher holder with a ceiling hoist. (A) Electrical hoist on rail. (B) Stretcher holder (two or three persons).

For the first layout, the following setup times were planned: 30 minutes to install the eight containers; 15 minutes for aircraft turn­around; 10 minutes for a quick change of the cabin layout to evacuate wounded persons; 10 minutes for a quick change of the cabin layout to transport loads; and 15 minutes to load eight wounded persons on stretchers.

The airmobile field hospital created for this aircraft includes:

—four inflatable-frame tents at 50 m2 (538.2 square feet) apiece —four electronic monitors, surgical instruments, stretchers, oxygen tanks, and other medical equipment —the emergency power unit that burns kerosene out of the aircraft’s supply to provide the necessary overpressure, lights, and climate controls in the tents

—eight to twelve stretchers, monitors with the appropriate connec­tions for the stretchers, anesthetics, various life-support devices, and other evacuation materiel

The tents, medical equipment, and emergency power unit (but not the monitors or the stretchers) are carried in eight standardized con­tainers set in pairs under four wing store stations. Those containers can be either lifted or transported on wheels. The field hospital and all of its equipment weighs 1,200 kg (2,645 pounds) and takes up 200 m2 (2,150 square feet). The first tent can be erected in fifteen minutes; and it takes one and one-half hours to set up the entire hospital, which can be heated or cooled to a constant 22° C (plus or minus 5° C). The hos­pital is self-sufficient between five and six days with six to eight med­ical attendants and four technicians.

Loading directly out of a truck bed.

Specifications

Span, 13.5 m (44 ft 3.5 in); overall length, 12.45 m (40 ft 10.2 in); height, 4.4 m (14 ft 5.2 in); wing area, 33.53 m2 (360.92 sq ft); takeoff weight with 2,000-kg (4,400-lb) payload, 9,000 kg (19,835 lb); max pay – load, 4,000 kg (8,800 lb); max fuel, 2,000 kg (4,400 lb).

Design Performance

Economical cruising speed for range of 2,700 km (1,680 mi), 530 km/h at 11,800 m (286 kt at 38,800 ft); economical cruising speed for range of 1,300 km (810 mi), 530 km/h at 200 m (286 kt at 650 ft); max cruis­ing speed for range of 1,800 km (1,120 mi), 670 km/h at 7,000 m (362 kt at 22,960 ft); takeoff/landing roll, 150-200 m (490-655 ft).