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Noisiest Jet Engine Ever  
User currently offlineFaro From Egypt, joined Aug 2007, 1548 posts, RR: 0
Posted (6 years 12 months 3 days 19 hours ago) and read 21841 times:

What was the noisiest jet engine ever produced, be it civil, military, Western or Russian, etc.

By the same token, what was the noisiest ever aircraft? If we take, say the Trent-powered A330 as baseline, how much bigger was this aircraft's noise footprint?

Faro


The chalice not my son
79 replies: All unread, showing first 25:
 
User currently offlineKELPkid From United States of America, joined Nov 2005, 6388 posts, RR: 3
Reply 1, posted (6 years 12 months 3 days 19 hours ago) and read 21860 times:

I'm sure it will probably be military  Wink

I'll start by nominating the noisiest plane I hear on a daily basis, the F/A-18 A through D models...



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineStarlionblue From Greenland, joined Feb 2004, 17041 posts, RR: 66
Reply 2, posted (6 years 12 months 3 days 19 hours ago) and read 21849 times:

You can count on the fact that the noisiest aircraft is or was military.

I hear (heh...) that the Tu-95 "Bear" is quite something when it comes to noise.

Quoting Faro (Thread starter):
If we take, say the Trent-powered A330 as baseline, how much bigger was this aircraft's noise footprint?

10 times as loud? In any case modern commercial aircraft whisper compared to 50s howlers. Old afterburning fighters were insanely loud.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineBoeingFixer From Canada, joined Jul 2005, 531 posts, RR: 0
Reply 3, posted (6 years 12 months 3 days 18 hours ago) and read 21826 times:

As far as overall noise, I would probably say the Republic XF-84H. http://en.wikipedia.org/wiki/XF-84H

As for strictly jet powered, the B-1B is about the noisiest jet I've heard next to the Victor Tanker.

Cheers,

John



Cheers, John YYC
User currently offlineHangarRat From United States of America, joined Jul 2005, 633 posts, RR: 0
Reply 4, posted (6 years 12 months 3 days 18 hours ago) and read 21831 times:

Some say the XF-84H "Thunderscreech" was the loudest aircraft ever built. It was an experimental derivative of the F-84 equipped with two turboshaft engines turning supersonic contrarotating props.

There was a good article in Air & Space a couple of years ago that described the noise as apocalyptic. To be near it without ear protection would cause most people intense pain. It was blamed for pregnant women at Edwards AFB miscarrying.

Quote:
On the ground, they were reportedly audible 25 miles away.

The propeller blades were supersonic even while the airplane was running up on the ground. Each blade shed a shock wave that spiraled outward. It was more than just sound but also the shock waves created that were detrimental.

Ground crew reported that wearing standard ear protectors "made no difference" and a person standing some distance from the airplane was subjected to rapid-fire shock waves. The shock waves acted on the body, causing spasms, nausea and loosening of the bowels. Even epileptic seizures were reported.

In short order, the Air Force Flight Test Center directed Republic to tow the XF-84H out on Rogers Dry Lake, far from the flight line, before running up its engine.

http://en.wikipedia.org/wiki/XF-84H

I can't vouch for the accuracy of that article, but you'll get the idea.



Spell check is a false dog
User currently offline747fan From United States of America, joined Jun 2007, 1187 posts, RR: 1
Reply 5, posted (6 years 12 months 3 days 17 hours ago) and read 21789 times:

All I've got to say is the afterburning Rolls-Royce Olympus on the Concorde! What a loud but wonderful sound! bigthumbsup 
www.youtube.com/watch?v=2KWJ43rkobs&mode=related&search=
Crank up the volume/subwoofers! Listen to the car alarms!


User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2556 posts, RR: 24
Reply 6, posted (6 years 12 months 3 days 16 hours ago) and read 21761 times:

On the civil side, the RR Speys in the Trident and BAC One-Eleven were the noisiest engines I remember flying from Heathrow in the 60s. Only the JT3C turbojet powered 707s rivalled it (different kind of noise, and therefore hard to tell which was loudest).

The noise the Tu-134 and Tu-154 Soloviev D30 engines make when starting are the loudest and strangest sounding starters I've ever heard.

As for comparisons with the A330, this ANA document compares all their jet types from 727 through to 777. It clearly shows the differences in noise levels and footprints. Since decibels are a logarithmic scale the actual noise reductions are dramatic.

http://www.ana.co.jp/eng/aboutana/anaenvironment/pdf/e2003-5.pdf

Any afterburning jet will be much noisier, needless to say. Concorde used to shake the ground a bit on takeoff.  Smile Nothing to compare with an unsilenced military engine in reheat though.



The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offlineZuluLima From United States of America, joined Jul 2007, 323 posts, RR: 3
Reply 7, posted (6 years 12 months 3 days 16 hours ago) and read 21741 times:

Quoting Starlionblue (Reply 2):
I hear (heh...) that the Tu-95 "Bear" is quite something when it comes to noise.

I believe this plane, or one of the Soviet turboprops similar, also had supersonic or near-supersonic props. And with 4 counter-rotating pairs, would be impressive. That B-1, though, DAMN! On takeoff they will nearly shake your car apart. I got to see/hear both the B-1 and Concorde take off in St. Louis years ago, and the B-1 is the only one that kind of scared me. They both were impressive, with 4x afterburners, but the XB-70 had 6 GE YJ-93s! Imagine that.



I didn't get a 'Harumph' outta that guy!
User currently offlineDeltaGuy From , joined Dec 1969, posts, RR:
Reply 8, posted (6 years 12 months 3 days 16 hours ago) and read 21736 times:

Had a B-1 set off my car alarm the other day, it was that good. I think that's one of the best aircraft for a flyby at a game, it really gets the crowd going. Noise is everything.

DeltaGuy


User currently offlineAirfoilsguy From , joined Dec 1969, posts, RR:
Reply 9, posted (6 years 12 months 3 days 16 hours ago) and read 21713 times:

Quoting Faro (Thread starter):
By the same token, what was the noisiest ever aircraft?

Is the space shuttle considered an aircraft? Extremely loud going up, very quiet coming down, at least once it slows below the speed of sound.


User currently offlineMike89406 From United States of America, joined Mar 2007, 1467 posts, RR: 3
Reply 10, posted (6 years 12 months 3 days 15 hours ago) and read 21705 times:

EA-6b Prowler you can feel you're teeth and chest rattle sometimes especially if you're on the line when they fire up the engines.

B-52 bomber super loud.


User currently offlineBoeingFixer From Canada, joined Jul 2005, 531 posts, RR: 0
Reply 11, posted (6 years 12 months 3 days 15 hours ago) and read 21705 times:

Quoting Airfoilsguy (Reply 9):
Is the space shuttle considered an aircraft? Extremely loud going up, very quiet coming down, at least once it slows below the speed of sound.

Actaully the OP asked what was the "Noisiest Jet Engine Ever"? I think this would exclude rockets unless you can get the noise levels of the turbo-pumps on these rocket motors  Wink

Cheers,

John



Cheers, John YYC
User currently offlineSEPilot From United States of America, joined Dec 2006, 6910 posts, RR: 46
Reply 12, posted (6 years 12 months 3 days 15 hours ago) and read 21678 times:

A bit off topic, but I was once at an airshow that featured a number of AT-6's, which the announcer called the most efficient machine known to convert money into noise. The point was that the prop tips went supersonic, and the racket was truly impressive. But I'm sure many of the jets mentioned above would put them to shame.


The problem with making things foolproof is that fools are so doggone ingenious...Dan Keebler
User currently onlineN243NW From United States of America, joined Jul 2003, 1632 posts, RR: 20
Reply 13, posted (6 years 12 months 3 days 14 hours ago) and read 21654 times:

I'd have to say the loudest aircraft I've ever heard is the B-1. Nothing has even come close in my experience.

-N243NW Big grin



B-52s don't take off. They scare the ground away.
User currently offlineRoseFlyer From United States of America, joined Feb 2004, 9643 posts, RR: 52
Reply 14, posted (6 years 12 months 3 days 12 hours ago) and read 21546 times:

I only have limited Boeing Data, but here you go for takeoff noise:

Takeoff Sound in Decibels
767 81.1 dB
757 80.2
747 86.1
737 80.2

Loudest Plane in Decibels:
F/18 Hornet: 117 dB

***Please note that the Decibel scale is logarithmic, so a F/18 Hornet with afterburners is actually 10 times louder than a 747.

Military planes are far louder. The Hornet is the loudest American aircraft at 117 dB with its afterburners in use.



If you have never designed an airplane part before, let the real designers do the work!
User currently offlineN231YE From , joined Dec 1969, posts, RR:
Reply 15, posted (6 years 12 months 3 days 12 hours ago) and read 21528 times:

I always thought an after-burning fighter jet, such as the F/A-18, is the loudest airplane there is...until, I watched a TF-33 (the JT3D equivalent-from 707s) powered KC-135 takeoff at close range, with no hearing protection.

I literally heard static and felt pain in my inner ears as the aircraft went by, and I was temporarily deafened for a half hour afterwards.

The aircraft had a tremendous "crackling thunder" like an afterburning fighter jet, however, it was the ultra-high pitched metallic screech from those engines that does it.


User currently offlineAirfoilsguy From , joined Dec 1969, posts, RR:
Reply 16, posted (6 years 12 months 3 days 9 hours ago) and read 21445 times:

Quoting BoeingFixer (Reply 11):
Actaully the OP asked what was the "Noisiest Jet Engine Ever"? I think this would exclude rockets unless you can get the noise levels of the turbo-pumps on these rocket motors

I thought asked 2 questions, one being about jets that second being aircraft in general.  Smile


User currently offlineBoeingfixer From Canada, joined Jul 2005, 531 posts, RR: 0
Reply 17, posted (6 years 12 months 3 days 9 hours ago) and read 21446 times:

Quoting RoseFlyer (Reply 14):
The Hornet is the loudest American aircraft at 117 dB with its afterburners in use.

Where did you get this info from? I'd like to look at that info for my own curiousity.

Cheers,

John



Cheers, John YYC
User currently offlineAAR90 From United States of America, joined Jan 2000, 3474 posts, RR: 46
Reply 18, posted (6 years 12 months 3 days 7 hours ago) and read 21416 times:

My vote is for the SR-71's J-58 engines in full afterburner. Loudest I have ever heard... and felt!


*NO CARRIER* -- A Naval Aviator's worst nightmare!
User currently offlineT prop From United States of America, joined Apr 2001, 1029 posts, RR: 1
Reply 19, posted (6 years 12 months 3 days 7 hours ago) and read 21416 times:

Quoting N231YE (Reply 15):
I always thought an after-burning fighter jet, such as the F/A-18, is the loudest airplane there is...until, I watched a TF-33 (the JT3D equivalent-from 707s) powered KC-135 takeoff at close range, with no hearing protection.

^^^This is true, the KC-135A with water injection on is by far the loudest I've ever heard and I've heard all those others.


User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 79
Reply 20, posted (6 years 12 months 3 days 5 hours ago) and read 21357 times:

Quoting AAR90 (Reply 18):
My vote is for the SR-71's J-58 engines in full afterburner. Loudest I have ever heard... and felt!

That would be my guess as well...I have no hard data to back that up but that engine has to have one of the highest exhaust velocities of all and it's *big*. And you know darn well that noise abatement certainly wasn't part of the design criteria. Probably not something that gets heard by very many people though.

Tom.


User currently offlineRwessel From United States of America, joined Jan 2007, 2353 posts, RR: 2
Reply 21, posted (6 years 12 months 3 days 5 hours ago) and read 21361 times:
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Quoting RoseFlyer (Reply 14):
747 86.1
(...)
Loudest Plane in Decibels:
F/18 Hornet: 117 dB

***Please note that the Decibel scale is logarithmic, so a F/18 Hornet with afterburners is actually 10 times louder than a 747.

The Bel scale is a factor of ten for every (one) Bel, or for every 10 deci-Bels. So 117-86.1 = 30.9, or about 1200 times louder.


User currently offlineN710PS From United States of America, joined Oct 2006, 1166 posts, RR: 3
Reply 22, posted (6 years 12 months 3 days 3 hours ago) and read 21335 times:

In the winter time espesially early morning hours When MD-80 series jets take off out of LGA I have seen them set off most of the car alarms in the employee parking lot. At CLT the same happens when it is cold and a 727 takes off. One day I was over at the Training center for a recurrent and outside having a puff and a pair of F-15's launched (do not ask me why they were there I do not know) and about 10 car alarms went off all at once. The F100 engine is one heck of a engine. I could only dream of doing that with a CRJ in any weather I would bet.


There is plenty of room for Gods animals, right next to the mashed potatoes!
User currently offlineSovietjet From Bulgaria, joined Mar 2003, 2609 posts, RR: 16
Reply 23, posted (6 years 12 months 3 days 3 hours ago) and read 21327 times:
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Quoting Faro (Thread starter):
What was the noisiest jet engine ever produced, be it civil, military, Western or Russian, etc.

This question comes up here every once in a while. I always define "noise" as two distinct types.

First you have noise that is not necessarily loud per se i.e. in decibles but in fact has a rather unpleasant frequency. A good example of this is the TF-33 KC-135s and B-52. They are not that loud(decibels), but the "screech" makes them very noisy/unpleasant to listen to. There are certain other aircraft that do this as well...where "loud" is because of the frequency. The Harrier for example, or a Yak-42 taxiing by at close range....VERY hard on the ears.

Secondly you have "pure noise". A good example of this is afterburners, turbojets like the JT-3Cs on the old 707s or turbofans with low bypass ratios like the VC-10. This type of noise is loud in the sense that it just shakes everything and causes thunder all around you. It is fundamentally different than the first type.

So when people mention aircraft and engines, keep in mind which of the two kinds it is. A Concorde at full AB and a KC-135 with TF-33s are both loud, yet they are loud in different ways.

Just trying to clear it up a little bit  Smile

Quoting Starlionblue (Reply 2):
I hear (heh...) that the Tu-95 "Bear" is quite something when it comes to noise.

Yes, but they are of the first type of noise that I mentioned, tremendous vibration, unpleasant frequency, but not at all like the "loud" of a Concorde for example.

Quoting Jetlagged (Reply 6):
The noise the Tu-134 and Tu-154 Soloviev D30 engines make when starting are the loudest and strangest sounding starters I've ever heard

Although both these aircraft have D-30s, the engines are different. The cores are the same but the engines have huge differences. A Tu-134 D-30 is louder, dirtier and has a smaller bypass ratio than the D-30KUs of a Tu-154M. That's why Tu-154s still fly in Europe while the 134s were banned. The Tu-134 on takeoff sounds just like a fighter jet, complete with the roar, thunder and exhaust crackling. The Tu-154 is a lot smoother.

As for my personal opinion:

First type of loud: harrier, TF-33s(like the B-707, B-52, KC-135), Yak-42, Tu-95
Second type: KC-135 with water injection, Tu-134, Mig-25, B-1B, SR-71

Hard to say, some of those are so close to each other....


User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2556 posts, RR: 24
Reply 24, posted (6 years 12 months 2 days 20 hours ago) and read 21224 times:

Quoting Sovietjet (Reply 23):
Although both these aircraft have D-30s, the engines are different. The cores are the same but the engines have huge differences. A Tu-134 D-30 is louder, dirtier and has a smaller bypass ratio than the D-30KUs of a Tu-154M.

I was referring to the howling noise made during enine start, which seems to be common to both aircraft.



The glass isn't half empty, or half full, it's twice as big as it needs to be.
25 Post contains images Tb727 : The loudest bizjet engine is hands down the CJ610 on the 20 series Lears. Seen a couple violations of 110 dB's, you can get a little better if you do
26 Post contains images KELPkid : Oh yeah, between those and the MU-2's, the reason that lineboys working at FBO's the world over need hearing protection
27 Dougloid : I cut my teeth on those things, and I've got the hearing loss and tinnitus to prove it. I always thought the Continental J69 in the Cessna TweetyBird
28 Tb727 : Yeah, I started flying them at 22 and now at 27 I have noticeably worse hearing from just the noise inside the thing. They are obnoxiously loud. Luck
29 Post contains images TF39 : It might not be the loudest (sure it's up there though) but I think it has the coolest sound: the TF-39. And yes, I'm bias
30 HangarRat : There's a courier service that launches three of those every morning about 2 a.m. from Rwy 35 at PHL. A few nights ago we were sleeping with the wind
31 Post contains links 747fan : I see the occassional C-5 Galaxy at my home airport, and I was quite surprised at how loud they were when I first saw on takeoff; probably the neates
32 Ex52tech : I second that vote.
33 N710PS : I always enjoyed knowing that when we took off everyone looked to see when the Lear 25D was the bar tab payer for me. Air Ambulance at that too. At le
34 Faro : The J58's huge intake spike would however limit the front-end noise footprint, wouldn't it? I agree with the back-end noise though, it must have been
35 737tdi : The A6 Inttruder on the catapult. Been with alot of others. 737tdi
36 737tdi : Faro: The B-58 Hustler was a loud piece of sheetmetal. I heard them off of Carswell AFB. Still doesn't beat an A6, but I guess its cheap, been there d
37 Clydenairways : I've seen most of the aircraft mentioned above at airshows over the years but the one that sticks out as by far the loudest was the Panavia Tornado, w
38 Phollingsworth : True in a pure energy sense if the frequencies are the same. I am assuming that the ratings are a-weighted, but they might not be. Additionally, perc
39 Post contains links Oly720man : http://www.nasa.gov/centers/dryden/pdf/87745main_H-491.pdf Preliminary noise report on the XB-70. Fig 11 suggests 135dB as overall noise level at take
40 Post contains images KELPkid : Oh yeah, between those and the MU-2's, the reason that lineboys working at FBO's the world over need hearing protection I think we have a winner
41 Scarebus03 : The loudest I have ever heard were the engines on the CM170 Fouga Magister (Turbomeca Marbore VI F). I have at times been (stupidly close) to 747-100'
42 DashTrash : CJ-610s are loud, but JT12s are just a little louder. I never thought that F-18's were all that loud, especially compared to 15s or 16s. Seems to me t
43 Post contains images N710PS : Time to loose the wife and stick to the cars and planes. Our respective parent caarrier goes to Costa Rica afterall.
44 Post contains images DeltaGuy : The PW F-100 is one of the loudest, I think it's bested by the F119 in the F-22. As a troop who worked on the F-100 for awhile, in test cell you most
45 Post contains images MrFord : What about those RR Darts on the G-1 / HS-748? Probably far from being the loudest, but their lovely high pitch sound, plus the noise those 20-somethi
46 Post contains images KELPkid : I think that applys to just about any Rolls-Royce Dart...I recall seeing several Dart converted formerly piston powered Convairs at ELP...it was a po
47 Post contains images Starlionblue : I learned all about ear protection in the Swedish Army. When firing the 84mm recoiless rifle "Carl Gustav", foam earplugs AND ear protectors are mand
48 Dougloid : The Continental J69 in the TweetyBird is a license built Marbore. It's my champeen noisemaker. The airplane is known colloquially as a two ton dogwhi
49 Post contains images KELPkid : Personally, I've heard the T-37 called the "Tweet", or the "converter." It's the most effecient machine around at converting fuel into noise
50 Post contains images Sterling79 : I would say without a doubt that the concorde is the loudest western aircraft, however i have never seen one in real life but i would bet that the Tu
51 Post contains images KPDX :
52 Post contains images KPDX :    I swear...Im done. [Edited 2007-09-29 08:28:54]
53 DashTrash : That last SR video is quite possibly the most impressive thing I've ever seen!
54 LimaNiner : Maybe it was just because I was a kid at the time, but I certainly remember the F-104 Starfighter as being a loud machine...
55 Ex52tech : I can't remember an airplane built in the west looking like it was copied from a Soviet design, but you can't say the reverse is true.
56 Dougloid : Well this isn't a jet engine but the Black Clawson number 4 paper machine in the Newton Falls Paper Mill was a noisy son of a bitch that started me d
57 N710PS : Man oh man what I woulod do to see a SR71 in action today. I think if I got overflown by one I would stop and spooge myself on the sopt.
58 Sterling79 : The twin tail fighter concept was created by the russians with the Mig-25(also VERY loud!) followed by the american F-15 wich looked a lot like the M
59 Post contains images Ex52tech : Do ya really think we copied those two designs, besides the Tu-22 in any form doesn't even come close to looking like a B-1 in either model. About th
60 BoeingFixer : To be technically correct, the F-14A was the first western twin tail fighter design, post Mig-25, not the F-15. The first western fighter designed wi
61 Dougloid : Ummmmmmm the twin tail concept was created by the Americans with the P-38 Lightning.
62 AutoThrust : Maybe not a lot of people will agree with that but the EJ-200 from the Typhoon is bloody loud at full afterburner takeoff.On Airshows i have been, peo
63 KELPkid : Even louder than America's reigning king of noise, the F/A-18C? I've never heard a Typhoon in person, so I can't vouch...
64 Post contains links and images BoeingFixer : Actually the twin tail aircraft dates back a lot earlier than the P-38 which was probably one of the first fighters with twin vertical tails. I figur
65 Dougloid : I'm busted but that was the first thing that came to mind.
66 Post contains images Bond007 : Me too... probably for the same reasons Always the noisiest by far at the airshows. Jimbo
67 Post contains links and images 747fan : I thought this thread was about noisy engines rather than twin tail fighters. But I do find that topic interesting and I appreciate BoeingFixer's phot
68 AutoThrust : Yes, much louder then the F-18C, F-15, Mig-29, Rafale, also Harrier(though its pitch is higher). After all it is Europe's best engine.
69 Sovietjet : I dont know about who made twin tails or whatever...but the Mig-25 is RIDICULOUSLY loud...louder than the Eurofighter for sure.
70 Post contains images 747400sp : Belive it or not, I got use to it.
71 Post contains images Starlionblue : Best = noisiest now? Nah. You just went slightly deaf.
72 Post contains images AutoThrust : best=strongest= noisiest I still remember the people at the last Airshow i was, how they did try to minimize the noise of the EF, was fun. Have never
73 Post contains links Sovietjet : Yes, and the Mig-25 is definetly louder. Here's a video: http://www.flightlevel350.com/Aircra..._Untitled_Aviation_Video-4427.html
74 AutoThrust : Thanks for the vid. The Mig-25 engines are legendary and love their sound. However i can't jugde from the video, but i believe you.
75 JAGflyer : The Garrett engines on the MU-2 are extremely loud as well.
76 Post contains images AirframeAS : Any JT8D on a 732 would work for me!
77 Transpac787 : Does anyone have a video or soundfile of this plane??
78 Post contains images BilgeRat : I've read a few times now the loudest aircraft was the XB-70. From my own personal experience, Concorde at takeoff was very memorable, and a Harrier h
79 Speedracer1407 : OK, y'all are gonna think I'm crazy, but I'd like to place, of all things, the B2 on the list of very loud planes. It certainly doesn't produce the cr
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