@@Theonewhoseeks12 dude.. I'm asking "amazingly what " because he used an adverb.. so when you say " amazingly" you have to finish your sentence.. amazingly beautiful for example.. he should've used an adjective which is " amazing"..
omg same, i was 11, it was my first flight ever. US Airways metrojet. I watched the spoilers deploy and the reversers open, i'm told i turned pale cuz i thought the plane was being ripped open by windshear. Good times good times.
Billy, these parts of the plane were sent to the Aviation Technology Center in Indianapolis as an instructional aid, rather than recycled into aluminum cans.
The 737-232 was my first Captain assignment with Delta. It was fun and easy to fly although a bit slow at cruise. It was much more modestly powered than the 75/76 I had just left. It was a good bit more busy in the cockpit without an FMS. It was like the old 727 days- spinning the course knob and double checking the Jepps each segment. Many takeoffs, even from the long runways at ATL on flights to IAH required full power. EGT's were right at the red-line until thrust reduction at 1,000'AGL. I must say that for passengers seated behind the wing, the reverse thrust operation was the most visible and dramatic (as was the noise on take-off).
Poots Muhgoots, the 737-100 and 200 series had no bypass air like other turbine jet engines. 100% of the air taken in, was used in the hot exhaust output of the engine.
@@CapStar362 i know that. I was just commenting on that very solid noise the reverse thrusters made when they deployed. They deploy with such authority. Thought it was cool.
When I was much younger, I remember flying on the 200's. I didn't know one series from the other at the time but I clearly remember the reverse thrusts deploying in this odd way and being fascinated by it. Fun to see the mechanics of it up close, thanks for the post.
That noise is the hydraulic pump operating. Mechanics usually don't operate the APU inside the hangar for safety reasons. Plus all airlines usually have the "NO APU and NO ENGINE operations inside the hangar" rule.
That shrill noise is from an external hydraulic unit necessary to operate flaps and thrust reversers without engines or APU (see its hose extending from left to right under the left wing).
Those were built by Rohr in San Diego/Chula Vista, now part of Goodrich Aerospace. Notice the long white 4-foot tube just forward of them? They were added to 737s because early flight tests showed that the downward thrust actually lifted the airplane off the ground during landing. Ooops!
i was an A&P for several years at Continentals heavy check [C&D] at Denvers old Stapleton airport.The thrust reversers work like a clamshell rotating inwards diverting the thrust forward.They work in conjunction with the forward,mid,trailing edge flaps and speed brakes [spoilers][rectangular panel] on top of wing to slow the plane.
I flew on both the -200 and -300 with Southwest and its like night and day. You knew when the JT-8D's fired up, that roar just permeates you. And you heard it on the ground before you saw the plane. It was a no nonsense engine, when you commanded full throttle, it gave you that and 10 cents more. And the lounge over the wing, yess! Always room in a -200 to stretch out, I made beeline for that seat and claimed that spot as my turf, dammit! When that door shut, I propped my feet on the opposing seat, tipped my hat down and zzzzzzed all the way to HOU from CRP, a nice 40 minute snooze.
No less than Herb Kelleher of Southwest Airlines might have lost his head in similar circumstances. He once poked his head into the back of a 737 engine, only to have a mechanic unceremoniously haul him out and give him a cram course on Reversers 101. Of course SWA was and is noted for its all-737 fleet.
Oh the memories of being a kid on Aloha Airlines' flights between Honolulu and Hilo. I always wanted to sit just behind the trailing edge so that I can watch the mechanical symphony.
I have a work accident in a finger and everytime i see these things I think about that day kkkk but the accident was in truck repair :) sorry for my english i am brazilian!
@@AntonLoves737 it's okay man. From your comment, I see no sarcasm. I say this because a lotta people make joke like this, but then again, I see no joke. More like, confusing the original with the classic, because sometimes we describe the Original as "classic".....
this type of reverser in fact has a more efficient redirection of jet flow than does the modern design (the latter of which achieves only 65 degrees of redirection).
The thumbnail of this video confused me. I could tell why the engine looked like that. I've never seen thrust reversers that operate like this. Very cool!!!
These are called "clamshell" reversers For obvious reasons haha Commercial jets seem to.be drifting towards "cascading" reversers. Which open up more inside the engine than outside No fun
Loved the old -200. Both B system pumps were electrical and you could run the A system through the Ground Interconnect. Made function testing quick and easy. The Classics and NGs had completely separate A and B systems with only one electric pump each... so things went much slower unless the engines were turning the engine driven pumps or you had a ground cart. Spoilers and thrust reversers were always locked into the open positions with physical locks to prevent accidents. The last one I worked on was Alaska Airlines -200 Combi over ten years ago. They were really rough... being used for gravel ops and very high cycle machines with lap joints and lots of patches.
The old 737-200 series with the pneumatic reversers. Pretty to look at and a pain to work on. I don’t miss working on this plane and the 727-200 , both with the JT8D’s on them. A real work horse for Boeing.
love those low bypass old style jet engines. They look so sleek and sporty on the nice ol' 737. The new ones with those high bypass turbofans and the huge nacelle look so dopey.
The original TR opened straight up and down til late 69. They found that the exhaust was lifting the aircraft, so they retrofitted the diagonal opening type, and on all new ones from then on. This was also the time of significant vortex generator changes = Fewer, bigger, and gained 6 kts cruise. I was there.
I wish my A&P school had a 737. Biggest plane we had was a King Air, and the biggest engines we had were two or three T53s from Chinook helicopters donated from CCAD.
We had a 727, in fact United's first or second of the model. No engines as UAL owned their power plants and had full remanufacturing facilities in san francisco for them. Was all decked out in its early 80's bright livery. Really neat old plane, served UAL since 64 or so.
Hated those clamshells when I an apprentice. The DC9/MD80, were fitted with the same basic engine and T/R. As good as guillotines we were told when young lads.
I thought aircarrier usually present their aircrafts to univerities only if they stay the liverage the same... But of course University may change it/... BTW, Russian aircarriers presented russian TU-154 and il 96-300 to Moscow aviation university too
I'm always wondering if that thrust reverser is actually a reverser or are they just a bigger drag-inducing speedbrake that also blocks the flow of hot air from the engine from pushing backwards instead it forces it to the sides....
Nice to know that despite all the time that has passed and all the advancements made in aviation since this bird was new hydraulic pump whine has not changed a day.
Full Flaps - Spreed Break o Spoiler - y por ultimo Accionamiento de la Reversa del motor!!! Todo el Procedimiento del CHECKLISTS para el Aterrizaje (Landing) Hermoso Boeing 737 - 200!!! ya muy pocos de los que quedan!!! Practicamente un Avion Reliquia Vintage!!!
When I was in the Air Force, I heard how dangerous those hydraulics could be to an arm, finger, etc. Also, heard stories about radar accidentally blowing up fire extinguishers, etc. if switched on...
Especially the two B system pumps running together tied through the ground interconnect so they could run both the A and B system. Later 737s only had one electric pump for each system and no way to interconnect, so you only ran one at a time or used the ground cart.
You are completely incorrect. Modern jets get most of their thrust form the 'bypass air'. In fact, about 75%-90% or more of their thrust comes from the 'fans and not the core. The core is basically meant to run the fans in modern jets.
These engines are low-bypass, so there is no way you could use bypassed air for reverse. In high-bypass engines there is more bypassed air than not-bypassed, so it makes sense to use bypass air for reverse.
No, there were 30 of the 100s built, 22 of them went to Lufthansa - who BTW were the launch customer for the whole series, the first time a foreign airline ever launched a US-built jetliner.
They're similar. Not quite the same, but from the same lineage. The Boeing 737-200 adv used JT8D-15 or -17 engines. The MD80 uses the larger fan JT8D-217 or -219 engines.
![MUST HEAR!!! Boeing 707 Takeoff: Four JT3D turbofan engines giving their best & loudest! [AirClips]](http://i.ytimg.com/vi/EI3owgIj6zs/mqdefault.jpg)
![MUST HEAR!!! Boeing 707 Takeoff: Four JT3D turbofan engines giving their best & loudest! [AirClips]](/img/tr.png)
The sound of the reversers when they hit together is amazingly..great video
It’s like splitting a sharp pencil right in half.. no slip, just directly... you know?
Amazingly what?
@@H.EL-Othemanyyour not an aviation fan but! For us that sounds like amazing
@@Theonewhoseeks12 dude.. I'm asking "amazingly what " because he used an adverb.. so when you say " amazingly" you have to finish your sentence.. amazingly beautiful for example.. he should've used an adjective which is " amazing"..
@@Theonewhoseeks12 you're*
I loooove those thrust reversers! They look awesome! I remember being like 8 years old with my nose against the window waiting for them to deploy :D.
ptroinks Sadly the new ones didnt like that
Yep I miss those airplanes...I too loved watching those clamshells in action😊
First time I saw them while watching thru the window just next to them during landing I freaked out until I realized what was happening.
I think that freak out occurred more with the 727 wing. That wing, looked like it fell part when all its stuff was hanging out there.
omg same, i was 11, it was my first flight ever. US Airways metrojet. I watched the spoilers deploy and the reversers open, i'm told i turned pale cuz i thought the plane was being ripped open by windshear. Good times good times.
"We have a 747 that is pushing back via reverse thrust. That has been out of protocol since the 1980's sir, you can ALT+F4."
"And there we have a hot air balloon doing about 400 knots and doing a barrel roll."
Write a book.
holy sh*t the hot air ballon just did a 360
good ol Airforceproud
blog it
Man, those reversers hit eachother hard. That "WHOMP" when they make contact was meaty.
glad to see it retired in a university and not in a can of beer
Billy, these parts of the plane were sent to the Aviation Technology Center in Indianapolis as an instructional aid, rather than recycled into aluminum cans.
Still in operation in the far CND North ;)
In Venezuela they are still flying ;)
Like the saying goes.. Everything was tin can before it flew.
Joe Hew Take a long hard look at it. Think about it.
Slowing down the old fashioned way. I’ve been flying since the 70’s and I LOVE this!
The 737-232 was my first Captain assignment with Delta. It was fun and easy to fly although a bit slow at cruise. It was much more modestly powered than the 75/76 I had just left. It was a good bit more busy in the cockpit without an FMS. It was like the old 727 days- spinning the course knob and double checking the Jepps each segment. Many takeoffs, even from the long runways at ATL on flights to IAH required full power. EGT's were right at the red-line until thrust reduction at 1,000'AGL. I must say that for passengers seated behind the wing, the reverse thrust operation was the most visible and dramatic (as was the noise on take-off).
Those thrust reversers mean serious business. "Ready to reverse all thrust" *robot noise* *BANG*
Poots Muhgoots, the 737-100 and 200 series had no bypass air like other turbine jet engines. 100% of the air taken in, was used in the hot exhaust output of the engine.
@@CapStar362 i know that. I was just commenting on that very solid noise the reverse thrusters made when they deployed. They deploy with such authority. Thought it was cool.
Did they not use the Pratt & Whitney JT8D which is/was a low-bypass turbofan?
Rory - do you see any bypass ducts? i rest my case ;)
Pooh - yeah that was a pretty authoritative "THUNK"
The aviation geek in me is very satisfied after watching this! The only way I could've been more satisfied is if I had have been there in person.
Me in 2011 : oh this is 737
Me in 2019 : iS tHat tHe 737 - 200?!? ThiS Is a rArE vIdEo
@Savas Kurt ???
😂
They were rare even then.
Even the Classics ( 300 , 400 & 500) are rare now. Airlines dropping them like flies.
Not it's a MAX 8
There's something about the complexity of a jet engine juxtaposed with the simplicity of reverse thrusters that is so mesmerizing...
When I was much younger, I remember flying on the 200's. I didn't know one series from the other at the time but I clearly remember the reverse thrusts deploying in this odd way and being fascinated by it. Fun to see the mechanics of it up close, thanks for the post.
That noise is the hydraulic pump operating. Mechanics usually don't operate the APU inside the hangar for safety reasons. Plus all airlines usually have the "NO APU and NO ENGINE operations inside the hangar" rule.
Thank you for answering the question I was about to ask. 😂
2012: No
2013: No
2014: No
2015: No
2016: No
2017: No
2018: No
2019: LETS RECOMMEND THIS TO EVERYBODY
Recommend
Anton H Oh, thank you
I’m an avgeek (aviation geek)
Been getting old video recommendations for the past 2 weeks think UA-cam changed the algorithm
🤣🤣🤣👍
Действительно, самое время 😂😂😂😂😂
That shrill noise is from an external hydraulic unit necessary to operate flaps and thrust reversers without engines or APU (see its hose extending from left to right under the left wing).
Those were built by Rohr in San Diego/Chula Vista, now part of Goodrich Aerospace.
Notice the long white 4-foot tube just forward of them? They were added to 737s because early flight tests showed that the downward thrust actually lifted the airplane off the ground during landing. Ooops!
i was an A&P for several years at Continentals heavy check [C&D] at Denvers old Stapleton airport.The thrust reversers work like a clamshell rotating inwards diverting the thrust forward.They work in conjunction with the forward,mid,trailing edge flaps and speed brakes [spoilers][rectangular panel] on top of wing to slow the plane.
I flew on both the -200 and -300 with Southwest and its like night and day. You knew when the JT-8D's fired up, that roar just permeates you. And you heard it on the ground before you saw the plane. It was a no nonsense engine, when you commanded full throttle, it gave you that and 10 cents more. And the lounge over the wing, yess! Always room in a -200 to stretch out, I made beeline for that seat and claimed that spot as my turf, dammit! When that door shut, I propped my feet on the opposing seat, tipped my hat down and zzzzzzed all the way to HOU from CRP, a nice 40 minute snooze.
seating configuration depended on what each airline/ route desired. Most were crammed commuters back then.
That snap is so satisfying
imagine getting your hand between those buckets
clunk and you’re now a Skywalker
original 737 from 1960's maybe?
Reynaldi Widjaja I believe so.
the thrust reversers is weird lol
so basically the engine do not reverse but the clamshell separate the wind up and down to reduce speed ?
Reynaldi Widjaja dari indo ya mas.. suka GTAV ya.. sma nihh.. :v tapi spek ngga mendukung.. :v
Kok GTA V ?
DC-9 clam shells are quicker and a lot more dangerous. Nearly lost an arm once!
Why were you even that close when they were activated??
Aren't those ones pneumatic?
That's why the flight attendant tells you to remain seated. :)
Thats why you shouldnt be on an active runway!
No less than Herb Kelleher of Southwest Airlines might have lost his head in similar circumstances. He once poked his head into the back of a 737 engine, only to have a mechanic unceremoniously haul him out and give him a cram course on Reversers 101. Of course SWA was and is noted for its all-737 fleet.
These went away on the 737-300 and superior models as well. These reverse thrusters were only on the 737-100/200 models
I have fond memories of those buckets. 😂
Gotta love the clamshell reversers :) 1998 was the last time I caught a ride on a 737-200 and saw these reversers in action.
Oh the memories of being a kid on Aloha Airlines' flights between Honolulu and Hilo. I always wanted to sit just behind the trailing edge so that I can watch the mechanical symphony.
Somewhat satisfying watching the reverse thrust close
Been a while since I've seen a 737 like that, she's definitely a piece of history and the start of a proven aircraft that's still kicking today.
03:25 my fingers!
I have a work accident in a finger and everytime i see these things I think about that day kkkk but the accident was in truck repair :) sorry for my english i am brazilian!
easy...
chomp!
CPT MH Why Say something like that
Leonhard Rotch oh my dick
Did you hear what some guy said at 0:59 when the spoilers went up?
The 737-200 my favorite variant. Looks nice!!👍
Lovin' those retro JT8Ds!
Got this in recommendations in 2020
Btw, 737 original is really cool! I wish I flew it!
_did you mean:_ 737 Original?
Pan American 001 ohhh yes sorry, such a stupid mistake
@@AntonLoves737 it's okay man. From your comment, I see no sarcasm. I say this because a lotta people make joke like this, but then again, I see no joke. More like, confusing the original with the classic, because sometimes we describe the Original as "classic".....
Nothing better in aviation than the sound of a 737-200 on the tarmac at idle.
this type of reverser in fact has a more efficient redirection of jet flow than does the modern design (the latter of which achieves only 65 degrees of redirection).
Can you provide the old 737's thrust reverser degrees of redirection in comparison? 65° to me doesn't sound that bad.
The thumbnail of this video confused me. I could tell why the engine looked like that. I've never seen thrust reversers that operate like this. Very cool!!!
These are called "clamshell" reversers
For obvious reasons haha
Commercial jets seem to.be drifting towards "cascading" reversers. Which open up more inside the engine than outside
No fun
Tough to do this design with modern high bypass engines. This OG 737 has long skinny low bypass ones.
The style of reverse thrust is pretty AWSOME
It's nice to see this plane retirement at the museum. 👍
Actually at a university for learning! Even better
why is the way the clam shells smack together so satisfying haha
Loved the old -200. Both B system pumps were electrical and you could run the A system through the Ground Interconnect. Made function testing quick and easy. The Classics and NGs had completely separate A and B systems with only one electric pump each... so things went much slower unless the engines were turning the engine driven pumps or you had a ground cart.
Spoilers and thrust reversers were always locked into the open positions with physical locks to prevent accidents.
The last one I worked on was Alaska Airlines -200 Combi over ten years ago. They were really rough... being used for gravel ops and very high cycle machines with lap joints and lots of patches.
The old 737-200 series with the pneumatic reversers. Pretty to look at and a pain to work on. I don’t miss working on this plane and the 727-200 , both with the JT8D’s on them.
A real work horse for Boeing.
D R the T/Rs were hydraulic dude, I used to work on them too
My bad, you’re absolutely right. I was thinking of a different aircraft.
3:25
When you suddenly start pooping in class...
Cool! Boeing 737-200's/ Boeing 737-100's Engines reverses thrusts!
love those low bypass old style jet engines. They look so sleek and sporty on the nice ol' 737. The new ones with those high bypass turbofans and the huge nacelle look so dopey.
Those thrusters change positions with authority & conviction!
Damn, and the biggest thing we have here at Cape Cod AMT is a Sabreliner.
You lucky bastards got a 737!!
That is awesome.
Cheers
The original TR opened straight up and down til late 69. They found that the exhaust was lifting the aircraft, so they retrofitted the diagonal opening type, and on all new ones from then on. This was also the time of significant vortex generator changes = Fewer, bigger, and gained 6 kts cruise. I was there.
They also made the reversers diagonal, about 35° from vertical.
Imagine putting a melon or something in between *SPLAT*
maybe a finger.
These still fly in canada, love the tiny engines it has
@Timothy Simpson Most of the remaining Canadian 737-200s have gravel kits for landing on unpaved runways.
Nice video. Rarely does a person see the mechanics of this close up.
Great vid. Nice to see all the "old school" tech.
I wish my A&P school had a 737. Biggest plane we had was a King Air, and the biggest engines we had were two or three T53s from Chinook helicopters donated from CCAD.
We had a 727, in fact United's first or second of the model. No engines as UAL owned their power plants and had full remanufacturing facilities in san francisco for them. Was all decked out in its early 80's bright livery. Really neat old plane, served UAL since 64 or so.
Hated those clamshells when I an apprentice. The DC9/MD80, were fitted with the same basic engine and T/R. As good as guillotines we were told when young lads.
This is some ancient 737! Dash 200, I suppose? Those would then be venerable P&W JT8Ds, the same that powered most of DC-9 models...
i love the engine design and the reverse thrusters on those 737-100 and 737-200's!
Full flaps full reverse thanks for this wonderful videos
This is one of the simpler checks that i used to do Still love aviation once it is in your blood never get over it!!
Cool video 👍👍. Subscribed
Clever engineering -yet looks so simple and crude to me - great stuff - thank you Jimmy for sharing -
I assume the aircraft they're using is Singapore Airlines because at some parts you could see the livery and it looks like that of Singapore Airlines.
I thought aircarrier usually present their aircrafts to univerities only if they stay the liverage the same... But of course University may change it/...
BTW, Russian aircarriers presented russian TU-154 and il 96-300 to Moscow aviation university too
It's actually the colours of Vincennes University, where the plane is..
Jonathan Tan technically it would be at the hangar they have at Indianapolis International Airport
You’d be surprised to see how many parts I’m overhauling these days for old 737’s just like this.
The sound of the two giant pieces of metal crashing together is the best sound ever
"Forward, forward... easy. We only want 500." Tragic incident but lovely plane.
“Just barely climb.”
Too bad they didn’t firewall it. I’ll always do that rather than hit ground.
I'm always wondering if that thrust reverser is actually a reverser or are they just a bigger drag-inducing speedbrake that also blocks the flow of hot air from the engine from pushing backwards instead it forces it to the sides....
They do Infact reverse the thrust, although it's not very efficient. They get the job done though.
is this one of the old Boeings which had the narrow engines stuck to the underside of the wing? (not protruding outwards like the newer ones0
1:49 whaaaaaat? Does this happen regularly on planes?
No not anymore.
It used to, but nowadays there are small things on the sides of the engine.
No old turbojet engines would reverse like that... this isn't the case with modern turbofan engines
@TheCessnaDriver what do you mean lies?
Yep.
Very nice demonstration.
I miss seeing these on flights. As a kid I was so excited to see the thrust reverser open while flying the old Frontier and United in the 80’s.
Would love to see the thrust reversers on a newer engine up close.
This is beautiful . Thank you for sharing
Love the sound when thrust reverse opens up
I love this type thrust reverser! From Japan.
My first gahhhhn! was ANA’s JA8417 at Oita RJFO in 1974.
Nice job and good vid u got here jummy
piece of art
Make a closeup on the 737-400's small flap sections which are negatively hinged near the thrusters if possible. Thanks in advance :D
Thanks for sharing! Good information. Airplanes are awesome machines.
Nice to know that despite all the time that has passed and all the advancements made in aviation since this bird was new hydraulic pump whine has not changed a day.
Props for the user icon 🤜💥🤛
Man the 200 was iconic
no ear protection ? I suppose the ones that work there use some, or they would go deaf in time ?
+Isaac OLEG COULD YOU REPEAT THAT PLEASE?!?
Isaac OLEG Some people prefer ear plugs (inserted in the ear canal) rather than ear muffs.
engine needed to urine during reverse thrust ;D
Lol :D
Raze_Noodlez
it's an old plane. give it a break
I thought it was hydraulic fluid
Full Flaps - Spreed Break o Spoiler - y por ultimo Accionamiento de la Reversa del motor!!! Todo el Procedimiento del CHECKLISTS para el Aterrizaje (Landing) Hermoso Boeing 737 - 200!!! ya muy pocos de los que quedan!!! Practicamente un Avion Reliquia Vintage!!!
I like the way the old school 737's look and sound compared to new ones
i remember seeing this when i was like 7 and i turn to mom and said...hey mom the engine just fell off...
It was dirt mixed with hydraulic fluid and water. it happens in all decomissioned airplanes that sit for a while.
Always loved the look of the P&W engines.
‘Lot a’ water’ 😂 such a great plane
That’s a beautiful old 737!!
When I was in the Air Force, I heard how dangerous those hydraulics could be to an arm, finger, etc. Also, heard stories about radar accidentally blowing up fire extinguishers, etc. if switched on...
Sadly i can never see those 737 again. 787 has ruled the sky by the time i like aviation. Sad to see them go
They’re still flying in Canada, with Nolinor who uses ex Delta 737s
@@JavierLopez-ic8sb Hopefully one day I'll be able to visit there.
@@marvelgoh5648 same here, never been there
Love those thrust reversers! Ex Singapore Airlines?
It's the electrically driven Hydraulic Pump.
Now this is content we need, good job man
The EMDP noise is just nostalgic...
Especially the two B system pumps running together tied through the ground interconnect so they could run both the A and B system. Later 737s only had one electric pump for each system and no way to interconnect, so you only ran one at a time or used the ground cart.
That sound is coming from the hydraulic pumps which actuate the flaps and air surfaces.
Who else made the mistake of clicking on the video with:
A. Headphones/earplugs in
B. Turned up to full volume
Fright I’m my LIFE!
these thrust reversers are allot more effecient then the current ones, because they redirect the complete airflow and not only the bypass air.
The bypass creates 90% of the thrust lol plus what Mind said.
Not just that, they also act as parachutes.
You are completely incorrect. Modern jets get most of their thrust form the 'bypass air'. In fact, about 75%-90% or more of their thrust comes from the 'fans and not the core. The core is basically meant to run the fans in modern jets.
These engines are low-bypass, so there is no way you could use bypassed air for reverse. In high-bypass engines there is more bypassed air than not-bypassed, so it makes sense to use bypass air for reverse.
"than"
This is a 737-100 or -200. P&W JT8D and not the -300-up CFM56.
Definitely a 200, most likely an Advanced, as were all from line # 400 in 1971 onward.
silicon212 200, 100 was one plane and after several test flights nasa used it
No, there were 30 of the 100s built, 22 of them went to Lufthansa - who BTW were the launch customer for the whole series, the first time a foreign airline ever launched a US-built jetliner.
These engines also look a lot like the ones on the MD-80
They're similar. Not quite the same, but from the same lineage. The Boeing 737-200 adv used JT8D-15 or -17 engines. The MD80 uses the larger fan JT8D-217 or -219 engines.
Would that crush your hand if you put it between those two pieces of metal when it opened like that?
It would take it right off!
be sure to keep enough distance from those reverse thrusts if it's powerful enough to stop a 52.000 kg plane, it can press a person easily in half.