No more amazing than the landing gear. Flaps were integrated into the air frame long before the amazing design of the retractable tricycle gear system which makes ALL of modern aviation possible.
I worked for Boeing for 13 years and while I was there I built a lot of the components you see. Those spinning shafts you see I built thousands of them...
Gob smacked - - if you just looked at the engineering you would think you were in an old manufacturing factory - not a jet - -amazing stuff -thank you jageera!
Nice view. This 737NG airplane actually has a simpler trailing edge flap system than the Classics (737-100, 200, 300, 400). Those flaps were in twelve sections: mid flaps, fore flaps and aft flaps inboard and outboard of each engine. Very early100s and 200s also had a cable operated flap asymmetry shutoff system that was a maintenance nightmare. Newer Boeings are much easier to maintain in general.
As a kid I used to ride Aloha Airlines 737s a lot. I loved (and still do) sitting behind the wing trailing edge so I can watch the control surfaces move about. I know, kind of geeky.
The last time I flew, I tried an over wing exit row, I missed the control surface action(most of my flights in my life have been behind the wing) I love me some flap action.
The segmented flaps design was developed a LONG time ago by Boeing. You will see them on the 727,747,737 and others. They are very simple to maintain and adjust but there are a lot of moving parts.
You would be surprised at the number of first time flyers that almost freak out when they hear the flaps being extended, especially right after takeoff and the plane begins to climb.
The first time I flew with my girlfriend, when she heard the engines start, she gripped my arm so hard, I actually bled XD And I'm a 1.85m dude that's 105kg and my girlfriend is just 40kg... I have no idea where a puny girl like that gets enough strength to make a grown man let out a yelp of pain... as she dug her nails and fingers into my forearm... so to say she's a nervous flier would be a massive understatement. Personally I love flying, sipping whiskey at 11000m, hurling through the air at 700kmh, appreciating the engineering that went into airplanes.
We're working on a B737-700 atm, had to remove Slats 2/4/5/6/7, pain in the arse. Hydraulics were all taken apart for a Vapour barrier repair so we had to use a hydraulic cart to extend/retract the slats/kreugers. Lot of overtime day today.
Made of composite in many areas, one dark and stormy night a pilot landed short into the mud and approach lights. Next day you could see a perfect outline of the lights cutout in the flaps. Kinda funny cause nobody was hurt.
What are those components at each corner with the input / output shafts with variable speed? And that big U-joint spinning slower? What do they do please?
This isn't a 737-400 :\ My favorite plane because its flaps are sooo interestingly made.Its flaps has what's called "thrust gates". These are corners of the flaps near the engine exhaust paths that move up while the flaps are fully down, otherwise the flaps would become BBQ in the exhaust gases.
This one was the abex. The abex one stands out from the fuel pumps and, yes, sounds quite better whereas the vickers one blends in with the fuel pumps and is lower pitched.
I also wonder at the extreme wind forces that those flaps have to overcome, given the speed of the aircraft and the wind flying over and under the wing. Upon touchdown, the surface flaps pop right up; before landing, the lower flaps slowly extend under the wing to break the wind flow and lower the aircraft; imagine the immense pressure the mechanism has to overcome to achieve the desired braking effect.
jasminderpinder flaps aren't used to "break" the airflow per say, they increase the surface area and angle of attack of the wing, resulting in more lift and drag. The spoilers that pop up when you touch down actually are the ones that break airflow and force the plane onto the ground. Their purpose is to kill lift.
Jageera45 The flaps are driven through a hydraulic motor in the middle of the wheel well. The "hydraulic jacks" are actually eight mechanical transmissions/ballscrews.
Jageera, pls correct me if I am wrong, but this looks like a 900 with six hydraulic jacks right? Just so you know, removing slats is a royal pain in the ass
737 NG uses screw jacks, not hydraulic jacks, and there are eight of them - four per wing. The PDU, power drive unit, uses a hydraulic motor to run in normal mode and an electric motor to run in alternate mode.
I figured it out. The hydraulic pumps like on this plane are the Vickers EMDP which is the manufacturer that makes pumps for almost ever single other plane you can go on and then there is the Abex EMDP which seems to be what most 737s have.
The flap motor on the ground is especially loud. In flight and when engines are running the flaps are run by engine driven pumps which are faster and quieter.
The dickhead pilot from biman airlines that flew us from sylhet to Daka decided to be a daredevil and NOT use any flaps on take off or landing. Can anyone help me decide what the hell needs to be done about this? I noticed a very fast take off speed (runway pretty much run out) and a fast landing speed (it was s very harsh landing where I almost bumped my head on the seat in front and had to use my hands on the seat in front to keep myself from being trusted forward. When we got out and into the bus to travel to the airport buildings, I noticed the pilot with a smirk on his face, pointing to the plain as he spoke to the next pilot and crew getting in. They had a bizarre look on their faces as the first pilot pointed at the wings. I feel this was just a pilot messing around being a daredevil, and showing off to his mates.
Log a complaint with the airline, collect signatures from as many passengers as you can first who were aboard. Make sure you note the flight number and date
more like a video on "the flap extension systems"..not just flaps coming down. seems to high of an aircraft to be a 737. besides, i can see the exhaust section of engine #1 and it resembles a 757.
To the trained aviation eye....that is an obvious 737NG. The number one engine cowling is out of round on the bottom for ground clearance. The wings are also, not as high off the ground like they are on 757's. If that isn't enough proof for you....kindly read the data placard in the gear well at the 2:33 mark of the video. That will settle the confusion. lol
well trained aviation eye...i didnt say iot even was a 757, but just a resemblance. yes youre right about the out of round clearance etc. good stuff guy!
KID: ummmmm "hey Mom is the plane REALLY running on FUEL"¿? .... MOM: "hmmm" .... psst mom "NO ITS NOT" looks like it's AIR COMPRESSION and tech they don't want to say..... monEYE moneyE and yea more MoneyE$ .... stay circumspect and Vigilant... FaCTz
@@drt4789 We have allowed marketing dictate the path of tech, so we keep building our modern tech on old natural principles. We need to search for tech that can cancel out the laws of physics...look at a car, it is just the same bike pedal principle, pushed by controlled explosions instead of legs.
This isn't primitive, it is reliable. The simpler you can make something the more resilient it is to breaking generally speaking. The best engineers make something so simple you'd have to be a genius to think of it, anyone can make an overcomplicated solution. Aviation is about safety and redundancy, so simplicity is the answer.
