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NOTE: RADIO CONTROL HELICOPTERS ARE ON THE BOTTOM HALF OF THE PAGE.
The Mil Mi-12 is the largest helicopter ever to fly. It first flew on July 10, 1968.
The Mil Mi-12 is bigger than a Boeing 727 airliner.
Two prototype Mil Mi-12 aircraft were built. The Mil Mi-12 never met design specifications and the program was cancelled. One aircraft remains on display in Russia. The second Mil Mi-12 is said to be at the Leontjewitsch Mil plant in Lyubertsy-Panki.
The Mil Mi-12 feaures the only two-rotor transverse engine layout ever built by Mil. The system eliminates the need for a tail rotor. The twin engines and rotors are the same as used on the Mil Mi-6.
The Mil Mi-12 used wings to support its weight while flying. Their unique design made their outboard portions wider than where the wings met the airframe.
The Mil Mi-12 had a fuselage and tail unit similar to a fixed wing transport. It had a flight crew of six. The cargo hold measuring 92 ft. (28.15 m) by 14 1/2 ft. (4.4 m) would be able to handle different loads, including troops or handling crews.
Mil Mi-12 manufacturing commenced in 1965 with its first prototype. Minimum lifting capacity of the Mil Mi-12 was to be 66,140 lbs. (30,000 kg).
In February 1969, the Mil Mi-12 lifted a 68,409 lb. (31,030 kg) payload to 9,547 ft. (2,910 m). On August 6, 1969, the Mil Mi-12 lifted 97,454 lbs. (44,205 kg) to a world record height of 7,398 ft. (2,255 m).
As well as being designed for military use, the Mil Mi-12 was probably intended for service with Aeroflot, especially for deployment in areas which are rich in resources, but have very poor communications. Technical problems were almost certainly responsible for development of this aircraft being abandoned.
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Specifications
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Primary Function:
Crew:
Engines:
Length:
Height:
Rotor Diameter:
Weight Empty:
Max. Weight:
Seats:
Payload:
Cruise Speed:
Max. Speed:
Climb Rate:
Ceiling:
Range:
First Flight:
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transport
six
4- 5,645 shp ea.
121' 4"
41'
2- 114' 10"
152,020 lbs.
231,412 lbs.
120
55,000 lbs.
132 mph
163 mph
1,720 fpm
11,482 feet
627 miles
1968
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Reference Sources:
Aviation's Most Wanted by Steven A. Ruffin - June 24, 2005
Military Helicopter Doctrines of the Major Powers by Matthew Allen - May 30, 1993
Mastering the Sky by James P. Harrison - Oct. 1, 2000)
Principles of Helicopter Aerodynamics by J. G. Leishman - Dec. 23, 2002
Not a Radio Control Helicopter
 Mi-12 in flight.
Not a Radio Control Helicopter
 Mi-12 from below.
Not a Radio Control Helicopter
 Mi-12 from side.
Radio Control Helicopters:
If you seen a Mil Mi-12 radio controlled helicopter or built a Mil Mi-12 RC Helicopter, please let us know.
Suggested reading for those considering a radio control Mil Mi-12 helicopter:
Radio Control Helicopter by John A. Drake
Safe and Easy Radio Control Helicopters by Nighthawk Publishing
Model Radio Control Helicopter Aerobatics by Ray Hostetler
Radio Control Helicopters by Nick Papillon
Flying Radio Control Helicopters by David Day
Flying model airplanes & radio control helicopters by Edward L. Safford
The Basics of Radio Control Helicopters by Paul Tradelius
Radio Control Helicopter from the editors of Model Airplane News
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