OP-1 was the first protoype in the development program for the Russian Mi-38 medium multipurpose helicopter. Protoype OP-1 was originally fitted with the Pratt & Whitney Canada PW127/TS engines and, later, the Klimov TV-117V engine option.

Data is based on the year 2017 data points of the fourth protoype and 2000 Russia's Helicopter World catalog data points of the Mi-38.

Overview

Data on design, manufacture and status

Design authority: MVZ Mil

Primary manufacturer: MVZ Mil

Parent type: Mil Mi-38

Aircraft status: Operational

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1-3

Crew seating: Side-by-side

Landing gear: Wheels (non-retractable)

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height:  
Overall Length:  
Overall Width: 21.10 m 69.2 ft
Airframe Dimensions
Airframe Length: 19.95 m 65.5 ft
Airframe Width: 4.30 m 14.1 ft
Airframe Height: 6.15 m 20.2 ft
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track:  
Cabin Dimensions
Cabin Internal Height: 1.84 m 6.0 ft
Cabin Internal Length: 7.00 m 23.0 ft
Cabin Internal Width: 1.84 m 6.0 ft

Weights and Performance

Data on aircraft weight and flight characteristics

Cruise Speed: 285 km/h

Weights
Max Gross Weight (ground): 15,600 kg 34,392 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 15,600 kg 34,392 lb
Empty Weight: 8,300 kg 18,298 lb
Useful Load: 7,300 kg 16,094 lb
Empty Weight Fraction: 0.532
Climb Performance
Max Rate of Climb: 9 m/s 1,772 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE: 3,750 m 12,303 ft
Limitations
Max Level Flight Speed: 290 km/h 157 kts
Never Exceed Speed:  
Service Ceiling: 5,900 m 19,357 ft
Range and Endurance
Max Range:  
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

Provided powerplant data is for uninstalled, sea level, static operations.

Powerplant
Number of engines: 2
Normal Ratings
Max continuous:  
Take-off / rated:  
Intermediate:  
Maximum:  
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

The main rotor is fold-able for storage and transport.

Main Rotor Characteristics
Diameter: 21.10 m 69.23 ft
RPM:  
Direction of Rotation: Counterclockwise
Hub Type: Elastomeric Bearing
Main Rotor Blade Characteristics
Blade Construction: Composite
Blade Chord:  
Blade Tip Geometry: Swept
Blade Twist:  
Number of Blades: 6
Main Rotor Derived Characteristics
Disc Area: 349.67 m² 3763.9 ft²
Disc Loading: 44.61 kg/m² 9.138 lb/ft²
Solidity:  
Main Rotor Blade Derived Characteristics
Blade area per blade:  
Tip Speed:  

Primary Control Device

Data on primary control devices such as tail rotors

Tail rotor hubs are locaed to provide non-90 deg spacing between blades of each hub

Tail Rotor Characteristics
Diameter:  
Configuration: Tractor
Direction of Rotation: Top blade aft
RPM:  
Tail Rotor Blade Characteristics
Number of Blades: 4
Blade Construction: Asymmetrical X-shape
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area:  
Solidity:  
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

Related VFS Resources

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Related Public Resources

Resources related to the Mi-38 (Prototype OP-1), provided by public sources across the internet.

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