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engine fan can now rotate more slowly, while the low-pres-
sure compressor and turbine can rotate much faster. The Decoding Pure Power
fewer number of compressor and turbine stages (six fewer urePower Engines comprise
stages)reduce engine weight and lower maintenance costs. two engine families: the Pratt
Compared to a conventional engine, a GTF powerplant has & Whitney Canada PW800
fewer stages and 2,000 fewer airfoils, while the fan drive Pengine family designed
gear system is designed to run for infinite life with no life for next generation large business
limited parts. Borescope capability at every engine stage jets, and the PW1000G GTF engine
allows a quick “look inside” for fast diagnostics. While the family. GTF engines power five plat-
high bypass ratio fan is designed to prevent debris from
entering the engine core, the externals have been designed forms; Airbus A320neo Family
for quick removal and replacement. (PW1100G-JM), Bombardier C Series
(PW1500G), Mitsubishi Regional
Jet (MRJ) (PW1200G), Irkut MC-21
(PW1400G-JM) and Embraer E-Jets
E2 (PW 1900G, PW1700G). The
PW1000G engine family are numbered
based on model as follows. Since this
is the first generation of GTF engines,
the first number represents 1 or 1,000.
The second number represents the
airframer; 1- Airbus, 2 – Mitsubishi, 4 –
Irkut, 5 - Bombardier and 7 – Embraer.
The thrust class of the engines is
denoted by the next two numbers: 24
stands for 24,000 pounds of thrust.
The letter ‘G’ at the end stands for GTF
engine. Hence the PW1124G (24,000lbs
thrust), PW1127G (27,000lbs thrust)
and PW1133G (33,000lbs thrust)
engines, power the Airbus A319neo,
A320neo and A321neo respectively.
The MRJ70 and MRJ90 are powered
by the 15,000lbs thrust PW1215G and
17,000lbs thrust PW1217G engines.
Bombardier’s CSeries is powered by
PW1521G engines with 21,000lbs of
thrust for the CS100 and PW1524G
Noise contours compared Airbus A320neo Airbus A320ceo
MTOW: 73.5 t
MTOW: 73.5 t
A320neo vs. A320ceo engines with 23,300lbs of thrust for
4 km
~-50% the CS300.
The Airbus A320neo (new engine option) has an approximately 3.5 km
50 percent reduced noise contour compared with the Airbus
A320ceo (current engine option).
3 km
The 85 dB(A) maximum noise level contours are shown for
a takeoff with Lufthansa standard takeoff procedures and
maximum takeoff weight (MTOW). 2.5 km
By comparison, a maximum noise level of 85 dB(A) is produced
by a truck passing at a distance of five meters (16 feet) in city 2 km
traffic.
1.5 km
© 01/2016
1 km
Source: Airbus
0.5 km
0
0.5 km 0 0.5 km 0.5 km 0 0.5 km
ASIAN AIRLINES & AEROSPACE January/February 2018 | 19
