pratt and whitney jt8d engine
The Pratt and Whitney JT8D two spool low by-pass turbofan engine was introduced to commercial aviation in 1964 coinciding with the inaugural flight of the Boeing B727-100 aircraft. Since then the engine has proved itself to be highly reliable having completed in excess of 673 million flying hours, with a total of 14,750 JT8Ds being built, and some 350 operators using the engine to power in excess of 4,500 aircraft.
In the mid 1980s the JT8D engines still powered at least half of all commercial airline aircraft flying, and in 2014 celebrated its 50th anniversary making it one of the most successful gas turbine engines in history, and regular use of the engine continued until 2020.
The low operating and maintenance costs associated with this engine helped to make the Boeing 727, 737-100, and -200, DC-9 and Mcdonnell Douglas MD-80 the most economical to operate. Beside these, the engine powered other aircraft manufacturers products such as the Aerospatiale Caravelle, Kawasaki C1 military transport, and Dassault Mercure to name a few.
The JT8D has been built in eight variants ranging in thrust ratings 14,000lbs to 17,000lbs. The newer JT8D-200 series entered service in 1980 and was the exclusive power plant for the McDonnell Douglas MD-80 aircraft with a thrust rating of 18,500lbs to 21,700lbs.
In the mid 1980s the JT8D engines still powered at least half of all commercial airline aircraft flying, and in 2014 celebrated its 50th anniversary making it one of the most successful gas turbine engines in history, and regular use of the engine continued until 2020.
The low operating and maintenance costs associated with this engine helped to make the Boeing 727, 737-100, and -200, DC-9 and Mcdonnell Douglas MD-80 the most economical to operate. Beside these, the engine powered other aircraft manufacturers products such as the Aerospatiale Caravelle, Kawasaki C1 military transport, and Dassault Mercure to name a few.
The JT8D has been built in eight variants ranging in thrust ratings 14,000lbs to 17,000lbs. The newer JT8D-200 series entered service in 1980 and was the exclusive power plant for the McDonnell Douglas MD-80 aircraft with a thrust rating of 18,500lbs to 21,700lbs.
TECHNICAL DATA - JT8D-219
Type Two spool, low-bypass turbofan engine
Length 154.0in (3,900mm)
Width 49.2in (1,250mm)
Dry weight 4,741lbs (2,150kg)
Compressor Thirteen stage axial flow, (one stage fan, six stage LP, seven stage HP)
Combusters Nine combustion tubes, annular
Power turbine One stage, HP - three stage, LP
Oil System Pressure with Scavenge and breather
Pressure ratio 19.4/1
Air mass flow 331lbs /sec (150kg/sec)
Maximum thrust 21,000lbs @ take off
Power to weight ratio 4.43lb/lb
Type Two spool, low-bypass turbofan engine
Length 154.0in (3,900mm)
Width 49.2in (1,250mm)
Dry weight 4,741lbs (2,150kg)
Compressor Thirteen stage axial flow, (one stage fan, six stage LP, seven stage HP)
Combusters Nine combustion tubes, annular
Power turbine One stage, HP - three stage, LP
Oil System Pressure with Scavenge and breather
Pressure ratio 19.4/1
Air mass flow 331lbs /sec (150kg/sec)
Maximum thrust 21,000lbs @ take off
Power to weight ratio 4.43lb/lb