Nanchang CJ6A

From Matronics

Contents

History

Wikipedia entry for CJ6A

Jim Goolsby's excellent article on the history of the CJ6A "It's Not A Copy."

OPERATING LIMITATIONS (Housai Engine)

Speeds

Vs0 (stall gear, flaps down) 59 Kts (108 Kph)

Vs1 (stall clean) 61 Kts (112 Kph)

Vfe (max flap extension speed) 108 Kts (198 Kph)

Vlo (gear down speed) 130 Kts (240 Kph)

Va (maneuvering speed) 149 Kts (275 Kph)

Vd (maximum dive speed) 201 Kts (370 Kph)

Power Settings

Max RPM 2350 RPM (5 minutes max)

Max continuous RPM 2250 RPM

Idle RPM 550 RPM

Max MAP ambient pressure + 85mm (+3.4”) hg

Max MAP (1 hour) ambient pressure + 80mm (+3.1”) hg

Max continuous MAP 710mm hg (28” hg)


(Rated or METO power is 2250 RPM with a MAP of ambient pressure + 80mm for 1 hour after which power must be reduced for 5 minutes.)

Fuel Pressure

Normal 0.2 - 0.5 kg/cm2

Minimum at Idle 0.15 kg/cm2

Oil Pressure

Normal 4-7 kg/cm2

Minimum at Idle 1.5 kg/cm2

Oil Temperature

Minimum engine oil inlet temperature 30 °C

Normal engine oil inlet temperature 50 - 65 °C

Max engine oil inlet temperature (Continuous) 75 °C

Max engine oil inlet temperature (15 minutes) 85 °C

Max engine oil outlet temperature 125 °C

(Note: the engine oil inlet temperatures are below those recommeneded by manufacturers of modern aircraft engine oils and probably represent limitations of the lubricating oils available to the Chinese when the Huosai engine was designed in the 1950's.)

CHT

Normal 140 - 210 °C

Minimum 120 °C

Max (Continuous) 230 °C

Max (15 minutes) 240 °C

Max (5 minutes) 250 °C

Max at Shutdown

OAT below 25 °C 150 °C

OAT above 25 °C 165 °C

Generator

Normal Volts 26.5V - 28.5V

Max Current 54 Amps

Air System

Minimum for start 20 kg/cm2

Minimum for take-off 30 kg/cm2

Normal 30-55 kg/cm2

Maximum 55 kg/cm2

Operations

Normal

Emergency

Systems

Airframe

Fuel System

Pneumatic System

Electrical System


Maintenance

Changing Main Gear Tires

Training