Readytotaxi From United Kingdom, joined Dec 2006, 2596 posts, RR: 3 Posted (5 years 2 months 3 weeks 4 days 4 hours ago) and read 4256 times:
Is it possible to tell which engine maker is fitted to an aircraft just by listening?
A friend asked me and I could not say for sure, take a 747 for example, if you stood at the end of the runway as it took off could you tell by the sound if it were Rolls Royce or PW or GE,do they have a different tone or pitch?
you don't get a second chance to make a first impression!
EXAAUADL From , joined Dec 1969, posts, RR: Reply 3, posted (5 years 2 months 3 weeks 4 days 4 hours ago) and read 4233 times:
I can tell an A320 family. They have a very distinct sound
Also the old JT-9Ds on the Dc-9 are very distinct. Even though 737-200s also had them, I think the distance from the ground results in a different sound. I love taxing out on an old NW DC-9. Reminds me of the 1970s.
Also RR darts were very distinct, so I could tell a F27 versus anotehr type of prop pretty easily.
AA737-823 From United States of America, joined Mar 2000, 5341 posts, RR: 11 Reply 5, posted (5 years 2 months 3 weeks 4 days 2 hours ago) and read 4103 times:
Quoting EXAAUADL (Reply 3): Also the old JT-9Ds on the Dc-9 are very distinct
Haha, JT-9's on a DC-9 woudl rip that plane apart. Funny mental picture, though.
I think you mean JT-8's.
Having worked on a ramp that has anywhere from 50-100 747s coming in daily (during peak summer cargo hauling), I can now tell a Pratt from the General from a Roller.
The Pratt howls at idle power.
The GE whines, and is PARTICULARLY unpleasant on an older 747-200 with CF-6-50s.
The Rolls buzzes. Also a very loud engine, from the front, at idle power.
Honestly, the most pleasant engines to be within 500 feet of are the Pratts.
AA61Hvy From United States of America, joined Nov 1999, 13975 posts, RR: 59 Reply 8, posted (5 years 2 months 3 weeks 4 days ago) and read 3974 times:
I live real close to LAX, I see the planes take off all day every day. I am getting to the point where I can hear the engines and know the plane (sometimes the airline). The only thing that gets me is the 737's.. They are tough to distinguish (minus the -200).
DocLightning From United States of America, joined Nov 2005, 16825 posts, RR: 57 Reply 13, posted (5 years 2 months 3 weeks 3 days 7 hours ago) and read 3281 times:
I can't tell engine types, but I can tell you (sometimes) what kind of plane just flew over without looking up.
For example, the A320 with flaps out on approach makes an odd whistling/howling sound. A 747 makes a sound that no other aircraft can ever or will ever make. And a NW DC9 departing DTW sounds like a tornado accidentally walked into you.
Zkpilot From New Zealand, joined Mar 2006, 4739 posts, RR: 10 Reply 19, posted (5 years 2 months 3 weeks 3 days 6 hours ago) and read 2771 times:
I find if you are spending a lot of time around aircraft (particularly on the tarmac/ramp) then you can tell the difference when they are taxiing. There are obvious differences on approach/takeoff between different types of aircraft, but to tell the difference between different engines on the same aircraft type is pretty damn difficult.
Yes, and the difference in the nacelle designs of the similiarly powered DC-8 creates a slightly different sound. The CFM's on the "70"series also VERY distinctive.
I have amazed myself over the years at just how many different aircraft/engines I can identify just by sound, whether piston,propeller-turbine, or jet.
I have never forgotten them either.
I was driving south on I-85 near the Clairmont exit, last year and heard a B-17. I told my friend "wow! I hear a B-17", and sure enough a B-17 flew over us on short final to PDK -----and I heard it above all the expressway noise!
"If everything seems under control, you're just not going fast enough!"
Silver1SWA From United States of America, joined Mar 2004, 4538 posts, RR: 28 Reply 24, posted (5 years 2 months 3 weeks 2 days 15 hours ago) and read 1675 times:
Quoting AirTranTUS (Reply 6): Really? In my experience both the IAE and CFM sound the same, which makes it easy for me to identify an A320 family member.
Same here. The CFM on the A320 does sound very similar to the CFM on the 737. The IAE sounds very distinct, especially during taxi.
Quoting Zkpilot (Reply 19): I find if you are spending a lot of time around aircraft (particularly on the tarmac/ramp) then you can tell the difference when they are taxiing. There are obvious differences on approach/takeoff between different types of aircraft, but to tell the difference between different engines on the same aircraft type is pretty damn difficult.
During idle and taxi, differences are very distinct. During takeoff it can be a little more difficult to distinguish types, but they are still noticeable. I can often tell what type and then make an educated guess on what carrier I am hearing before I even turn around to look.
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
Erhard From Australia, joined Feb 2008, 88 posts, RR: 0 Reply 25, posted (5 years 2 months 3 weeks 2 days 14 hours ago) and read 1647 times:
I can tell the diff between a prop and a jet...does that count?....
seriously though, I get them flying over my place and although they are still quite high, 3-4000', sometimes a bit higher and generally at low thrust, I can tell the diff between CFM's and P&W & RR