Added: 6 years ago
From: rz350ypvs
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  • And I see the workers aren't wearing their anti-ingestion lanyards.

  • step in front of it, see what happens

  • @We8City Engines will overheat N1 must reduce to about 80%. And speed is already exeeded it's limits about 250KTS under 10,000ft

  • this is 1 type of engine that's uncommon in a way cuz the fan turns clockwise instead of counterclockwise like most airplane engines do!

  • @88mroux Or is it just your mind/eyes fooling you?

  • @MusicLover11325 No, i've seen it up a closer before when the engines were facing the sun. they do run clockwise instead of counter clockwise.

  • @88mroux  Oh. Lucky.

  • Just so you guys know, 100% power is rarely used during the takeoff roll. Takeoff thrust is calculated and entered into the computer based on weight and runway length/condition, so as to conserve fuel and create less wear and tear. After takeoff, power is reduced further for noise abatement and/or wear and tear.

  • The very tips of the fan blades and compressor blades are going supersonic at full power. Take off power is only applied for 5 min or so after take off to reduce the risk of damage to the engine. No part of the engine is meant to go supersonic. That is the roar you hear. Every engine roars, some more then others. If you ever have the chance to sit at different locations, on different aircraft at take off you can hear the pitch of the roar change. The RB211 has a very special roar.

  • The fan blast area intercepts with the cessna, if this was take-off power (which it couldnt be as you can only go to 70 percent power) the cessna would be a "glider in a hurricane"

  • Sorry to harp on about this but there are a swarm of light aircraft behind the engine (and almost under the wing) this leads me to believe it is not ignited as those light aircraft would surely be blown away right?, or am i vastly over-esmitmating the power of the jet engine.

  • That engine can't be running, Both of the mechs are in the ingestion zone and would have been sucked in even at idle? i know this to be true of the CFM 56s of 737, looks like a dry run running off the cart?

  • @Patrickofcoventry Possibly just turning it over.

  • @Patrickofcoventry Why not? I leak check cfm's all the time with the engines running, just dont get close to the intake

  • @Sterlingjob Oh ok, it's just i have seen the marked ingestion zone on 737,4-through8s to be reaching round the sides of the engine. And on boeings engine safety reccomendations its something like 10ft around the front and 4ft behind the cowell. Probably different on this engine as its higher up.

  • @Patrickofcoventry 737's do have a funny intake so when around them im really careful! I found working on trains more dangerous!!

  • @Patrickofcoventry No the are not in the ingestion Zone of an RB211 so it is quite safe to be there while engines are running.

  • best flight simulator game you want to know....... my system specs:

    Windows 7 home premium

    Inspiron 570 - costomised as follows:

    AMD athlon II X3 425 (3 CPUs) - 2.7 GHz

    6144 Mb RAM

    DirectX 11

    Flight Simulator X Deluxe (no service packs) (if you want my settings config, contact me - alexfishy@hotmail.com)

    Saitek X52 pro.

    planning to get: Saitek pro flight multi panel

    this works quite well, i get about 35-45 FPS

  • whoever said 757's have 3 engines youve obviously never seen a 757. they have tow of these engines, and the reason the "roar" seems to go away after takeoff is because when the engines are at full throttle, the fan blade RPM is so high, it literally splits the air particles into the different atoms, causing the roar, and high pitches. but when the throttle is reduced after takeff, this amazing accurrance ceases, ending the "roar". great plane the 757.

  • they have a lovely job

  • It doesn't product a strange noise.

  • You know, if I was the one sitting there, I would be filled with a mix of absolute joy and absolute terror. The physics (and manufacturer warning labels) say I would be fine. Yet, as Adam Savage put it, you are just feet away from the mouth of a "satanic swirling thing of death." One of the coolest satanic swirling things of death though.

  • haha look at the little piper next to it. looks sooo small

  • oh shite dont get sucked in

  • Is This British Airways?

  • The Trent family is the development of the RB211 - same three spool configuration and all sound similar.

  • I bet those guys would be violating a shitload of osha regs.

  • Try unplugging a GPU cord from a Fairchild Metro 2 when its running... They design planes this way to throw people into harms way...

  • What would be the best flight simulator game?

  • I have also noticed that this sound only appears when increasing throttle, and disappears when the throttle is stationary. For example, you might hear this sound between 20-40% throttle but only whilst the throttle is being increased through this rev range, the sound would stop if you left the throttle at say 31%. Can anyone answer this....(The reason being that Im starting to make sound packs for FSX, and wish to make spool up dependant sounds)

  • i dont know why, but i notice 777s have that ooing and vibrating noice when starting up, if you make those packs can you tell me?

  • There is something I notice about the sound of these RB211's, Trent 800's, and CF 6's in that they all have a low 'ooing' noise at low rpm's when spooling up (especially apparent on the 800s and CF 6s. What causes this sound?

  • Did you know that RB211 was used on Lockheed

    L-1011. So When early 757 was built so they used RB211 on it. Until they change to new design engine for 757.

  • the rb211 on the the lockheed and the rb211 on the 757 are two different engines. the rb211-22 and rb-211-524a was used on the l-1011 while the rb211-535c and newer rb211-535e4 were used on the 757. they have different components.

  • Yes, but there same name is RB211 with another different number on the engine... so still same first name is RB211..

    I hope there is another RB211 in future cuz it sound so wonder sing to me.. hehe I been on 757 before... it relax to me while hear RB211 igne. Cheers

  • There were different versions used on the 747, 767, and Tupolev Tu-204 also.

  • THe DHL 757's still ave the older RB211-535C's

  • Anybody know why, shortly after take off the RB 211's noise seems to drop off? Is it because they are not running on full power any longer? This shit my Mrs up last time we went on a 757 she thought the engines werent working!

  • Hehe, I know what you mean. It's called a de-rated take off. This means that the engine power is reduced after take off to a power setting just sufficient for the climb at the current weight of the aircraft. This saves fuel and takes care of the engines (both temperature and their physical state). It's not very healthy or wise to run the engines at full power for longer than is needed. Hope that helps, and happy flying. :)

  • Cheers mate, although I still have some convincing to do that its just normal procedure and that the A320 we are due to fly on in 3 days time won't drop out of the sky!

  • The driver will throttle back before the 3000 foot noise marker plus if he didnt throttle back it would climb like a homesick angel!

  • Incorrect, a derated takeoff is from the beginning of the runway, not after lift off!

  • @We8City Thats called thrust reduction, you are right that is wen the pilot brings the engines back to 90%. He does this to keep in the limit of 250 knots because it is forbidden for any plane (without permission) to fly over 250 knots under 10,000 feet.

  • @We8City TBH i think that's kinda funny, the engines; at takeoff thrust was then later reduce to climb thrust

  • @We8City Well, if you get a tuning fork (we did this at school lol) and hit it hard and put it on the table, you find that hard surfaces amplify sound...

    thats all i can think of;D

  • @We8City Same as any other aircraft type, once airbourne and gear is raised you don't need TOGA (take off / go around) power anymore, and reduce the thrust hence the drop in engine noise.

  • @We8City it's because they don't need that much power after takeoff and they can't exceed 250knts <10,000 feet.

  • @We8City The usually dial the power down a bit once they get a few thousand feet off the ground, it's to do with speed restrictions, etc. The 757 is the worlds most overpowered aircraft, so it doesn't need much thrust to fly.

  • @We8City that is normal they are adjusting the rpms to flight idle the more efficient way of flying, Take off is restricted to about 10 mins any more than that the engines give up

  • @We8City That's normal. The pilot is transitioning from full power and best rate of climb to cruise climb in order to avoid overtemping the engines.

  • @We8City Yes, the engines are powering down. All planes so this shortly after takeoff, to conserve fuel and to save the engines wear and tear. Tell your wife not to be scared, because the engine powering down is making her ticket cheaper! :)

  • @We8City Yes it's because shortly after take off the thrust is reduced to less than 100%

  • @We8City My dad's a pilot on the 757, its because after takeoff the pilots change the thrust from takeoff thrust to climb thrust to reduce wear and tear on the engine so the engine can fly for longer.

  • @We8City That's because it goes from TO/GA thrust (or Flex thrust for that matter) to CLB power. Simple eh ?

    So now you ask yourself, why would only 5% of thrust reduction reduce the noise that much ? Because modern engines are made so that the vibrations at a given range of RPM cancel themselves so that the noise levels are reduced. So the noise level isn't proportional to the RPM of the engine.

  • @We8City The pilots slightly decrease the thrust setting after takeoff because all aircraft below 10,000ft at required to stay below 250 knots and airports have noise regulations.

  • @We8City the engines dont do 100% in the sky they simply cant

  • @We8City has the plane leveled off?

  • @We8City They do that to save gas because they dont need takeoff thrust to climb.

  • @We8City

    the pilot needs power but not as much because it's in the air so he might decrease the power slightly.

  • @We8City It does scare some people since it seems like the engines are shutting down, and I know I replied late but maybe you'll read it. The reason is that the pilots set the engines from T/O (TAKEOFF) THRUST TO CLB (CLIMB) THRUST which reduces unnecessary power and preserves engine life.

  • 737? hahah... you must be kidding me. all 737s has flat cowlings on the CFM56-3B1 and CFM56-7B24 engines. except for boeing 737-200s... and this aircraft is wayyy too big to be a 737. you could tell it by just looking at the aircraft's height...

  • its a 757-200 read the description!!!

  • 737

  • Derivative versions were later produced for variants of the Boeing 747, 757 and 767, as well as the Russian Tupolev Tu-204 airliner.

  • 757

  • 757?

  • it looks like a 737-800

  • and this a boeing 757-200ER

  • 737-800 has a flat cowling you muppet.

  • that high pitch noise is the compressors, usually the fan is on when there is a deep rumbling so i think the fan isnt on in this video.

  • The deep rumbling occurs at closer to full throttle. Trust me the fan is running in this video. You can't run the engine without the fan running.

  • what sort of ear protection do they need!

  • OMG! That is fucking dangeorus! They are so damm close the engine to be sucked into it or blowed away!

  • Im sure they know what they're doing. Little thing called safety regulations are in place. They're horrible death wasn't seconds away. Calm down.

  • ok.

  • If you are going to be sarcastic ... better perhaps to use proper grammar (their vs. 'they're" which is a contraction of "they are")

  • There there.

  • the RB211 is 1 of ma fav engines!

  • Is Rolls Royce the better of the 747 engines?

    Better than the old P&W JT9D?

  • Yes and no, v v good engines now, but when first introduced had big issues with high fuel consumption, hence compensation payments from rr, once the core was updated in the rb211 524 gh/t a core from the trent engine. RB211-524G/H upgraded with the Trent HP system gives:

    Lowest mature fuel burn

    Best performance retention

    Lowest maintenance costs

    Compliance with all current and planned emissions legislation

    Every 34 seconds an RB211-524 powered 747 takes off or lands

  • Thanks for the feedback. Would it be possible to retrofit an older 747 like a PW powered 747SP with the latest Trent engines?

  • I think that Trents are too powerful for the aircraft, although the Trent 500 would be a good option. It could also be fitted with uprated Lotarev D-18 engines which power the Antonov An-124

  • Rolls-Royce offered the Trent 600 engine on developments of 767 and 747 aircraft. The 767 variant was to be a new longer-range version of the Boeing 767-400ER to be powered by the Trent 600 and Engine Alliance GP7172, although in the end this aircraft was never launched. When Boeing finally launched the 747-8 in 2005 it announced that the General Electric GEnx would be the only engine available for the 747-8 A 66,500 lbf thrust version (GEnx-2B67) will be used.

  • yes, i was talking about the retrofits for the older 747SPs.

  • The 600 would still be the most suitable new engine as it was designed to fit on 747 pilons and has a thrust rating suitable. The Lotarev D-18 engines are old, it would not be worth spending money uprating the engine, r & d getting the pilons right and putting what is an old engine on, if you were to spend the money you might as well buy new. Failing that try and aquire some RB211-524H /-T's. It just my opinion please dont take offence.

  • Don't worry, I don't take offence that easily! Well, Lotarev could create a modern version of the D-18. The RB211 was an old engine bult fo the original 747s, it was upgraded for the 747-400 and the 757. Lotarev could do the same. I'm not saying that I dislike the RB-211, I like all of the aviation engines and don't find any engine better than the other.

  • fair comment thou it would be much easier to just buy rr or even ge90s as they are desgined to fit and already uprates.... long live the 747!!!!

  • I think that GE-90s are far too powerful in a four engine configuration. Three of them would be perfect.

  • sorry my mistake not ge 90's (was tired when i posted)- GE CF6-80C2B5F is what i meant. three engines is not as mad as it sounds during the 1970s, boeing studied a three-engined 747 to compete with the L-1011 TriStar and DC-10, which had lower trip costs than the 747SP. The center engine would have been fitted in the tail with an S-duct intake similar to the L-1011's. However, engineering studies showed that a time-consuming and costly redesign of the 747 wing would be necessary

  • I've also heard of that design, it would have been a beautiful aircraft to watch.

  • not if they are used on an A380...

  • The A380 is beautiful in another way, the 747 has a different style.

  • shes spinning alright

  • A Lot Meachanics here lol

  • the engine isnt even on the fuel is cut off

  • look closley the engine is ideling the cone in the center is barely turning unless its stroboscopic effect

  • it is storboscopic effect lol...

    the center cone wouldn;t been spinning that slow, and still not be ale to see the blades.

  • Boy, those guys do have guts!! I'd be so afraid of being gulped by this engine!!!

  • There not in the intake zone so they shud be fine lol. On the 757 that would make that engine the RB211-535E4 if i remember correctly.

  • There are stickers on the engine cowling, you should see it the next time you board an airplane. That sticker shows where you shouldn't be standing at when the engine runs. These guys are in the safe area according to a CFM56-3C1 engine sticker that i have seen before.

  • mama mia! thats a !#(@)($@* BLADE!

  • I THINK I SEE MARIO!

  • No Safety Harness Even if its on Idle Thrust

  • i saw pictues from a jet engine mecanic who was sucked by the same work into the engine

  • They have big balls to stay that close on running jets, but that's their job.

    I am a chicken when talking about running engines and plants.

  • thats true. 747's have 4. 757's have 2

  • @rz350ypvs 757 have 3

  • @rz350ypvs 757 have 3

  • @rz350ypvs or 747-400

  • The RB211 is the collest sounding jet in Commercial aviation today. Its spool up is second to none. Always has the hairs on the back of my neck standing striaght.

    Strapped to a 757, you have one magnificent aircraft.

  • No way, we are over worked and underpayed

  • thats aviation

  • @ivanjelical Who isn't. The only people who aren't over worked and underpayed are the execs.

  • @ivanjelical Its a hell of a job though

  • I work for Rolls-Royce and make this very engine, sounds so good

  • Me too at the Fan Case Facility, could do with a pay rise though.

  • £30,000 not enough?

  • Is that a Monarch Aircraft ?

  • you should listen the Thrust Reverser, its louder

  • really sweet

  • me too!!

  • that is music to my ears hahaha

  • quote!!! AHAHAH

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