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dreamieaurora · 9 months

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^_^ hello fellow puppydog 787 dragon drawer please may i see your 787 dragon? im curious after seeing that dude ranting to you as well lmaoo

YASEE HAII!!!! i have way more drawins of my sillies but rhey are in sketchbooks that i do not know the location of... im cleaning my room currently tho so if i find it ill post them :3 but here arw some of my airplane stuff....

my airplane dragon designs :3 these r rly old i need to draw more puppy planes... 💔 but i want to get a fursuit of my 787 airplane dragon someday!! i stll need to make a proper design/reference tho ..

i draw gijinka/human planes too :3 heres a coupl... i have concept designs for all of them in my head/in that lost sketchbook ..

#airplane #airplane dragon #boeing 787 #boeing #dreamliner #787 dreamliner #p 51 mustang #boeing 777 #777 #787 #gijinka #my art

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whilomm · 13 days

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these are claims from a different whistleblower than the one that was totally not murdered by boeing

(disclaimer, im not an expert and this article doesnt go into a ton of detail on the specific issues, so i could be a lil off, these are very much non-expert speculation rambles. anyone who understands better, feel free to correct me/add more deets).

if im reading it right these claims get into the way boeing has been outsourcing more and more manufacturing of parts to other companies, such as for the fuselage (the plane body as a whole, big tube u sit in). if those parts dont quite fit together right (and keep in mind the margins of error on these things can be VERY small in some cases, though im not sure exactly how much wiggle room they got here), that can lead to too much stress on certain parts.

like, for example, if one part of the fuselage is just baaaarely too big for the next part it connects to, it might all seem to fit together perfectly fine, but every time it takes off and lands or goes thru compression cycles (that is when they take off and land, going from low pressure-high pressure-low pressure), it just puts a BIT too much pressure on where they join. and over the years, that pressure just adds up until theres microscopic stress fractures, which become slightly larger stress fractures, until they get big enough that once a plane reaches a high enough altitude theres a midair disentegration, which is. exactly as bad as it sounds.

(sidenote: compression cycles can be more important for determining an airplanes lifespan than flight hours. the usual metaphor is bending a paperclip back and forth until it breaks, how many times can you bend it before metal fatigue sets in and it just snaps. holding it in a more bent position however will take a lot longer to snap it generally.)

now to be clear, every single plane has an intended service life, and its well known that planes can only take so many compression cycles before they start to get really hard to maintain without going kablooey. a plane may be rated for like, idk, 50k compression cycles (so, taking off and landing 50k times before its retired, because after that its no longer worth the maintenance vs just making a new plane). but if it turns out that plane has some flaw in its build that means itll develop fatal stress factures at only 20k cycles, well. thats bad. not sure exactly how the schedule on looking for stress factures looks like for maintenece crews (do they do it regularly for all planes on a set schedule? do they only do it occasionally for new planes, and start to ramp up checks as the plane gets older? dunno!) but well. generally speaking, a plane having a fatal flaw that gives it an explosive midlife crisis is Bad. i would hope theyd catch it! but i dont know enough about the deets of fuselage maintenence to know the specifics.

and OH YAY COMPOSITE MATERIALS. now, before anyone gets too freaked out thinking about the uh. submarine. use of composite materials is actually far more common on planes than on subs for a buncha reasons. one, planes just generally undergo a lot less in terms of pressure (that futurama joke, "this spaceship can handle between one and zero atmospheres", vs subs that have to deal with tens to potentially hundreds of atmospheres) but also because apparently, for complicated material engineering reasons, composite materials work much better under tension (high pressure INSIDE pushing OUT, like airplane) than under compression (high pressure OUTSIDE pushing IN, like submarine). heres a vid from someone who wrote their masters on composite materials under compression if you wanna hear from someone slightly smarter on the subject. im not gonna pretend like i understand the full deets, but "composites do OKAY with tension" is enough for me, go read the fancy scientific papers if you want more.

now, so that people do freak out at least a little bit: hm. dont like that they are using Way More Composite Than Usual on this plane. how much is the usual? idk, i assume composites are much more popular with low altitude small aircraft (bc well, weight and less pressure worries), dunno whats considered normal for high altitude longhaul crafts. but, apparently, the dreamliner is "more than usual". which, yeah cool, lighter weight airplanes use less fuel which is better for longhaul flights. is it. well tested enough though???

...anyway. im not an engineer, idk the full Deets, but well. havin lotsa fun hearing the engineers talk about how the parts of the giant metal skybirds dont fit together quite right and theyre using materials that fail more catastrophically than metal with less warning, experimentally, and we dont quiiiite have the data to know if. its a problem. thats really fun! LOVE hearing about how much theyre outsourcing parts, given how bad quality control of things as tiny as the titanium in some bolts or a little bit of the engine blades being not properly vacuum forged has lead to catastrophic failure in the past, and knowing how important sourcing of parts in airplanes is. all VERY yay!

#boeing #airplanes #aircraft #flight #boeing 787 #boeing 787 dreamliner #787 dreamliner #seriously the amount of incidents that were just like. 'oh this ONE SINGLE PART had a manufacturing defect'#u use bolts to small and the captain is sucked out of the windsheild (he lived tho dw)#the titanium in the engine blades has a small impurity and it Breaks causing uncontained engine failure and severes the hydraulics #oh a single part of this bit isnt lubed properly so it gets stuck and the plane ends up nosediving #but hearing that the FUSELAGE ITSELF may be improperly fitted is #What The Fuck #yeah no why just outsource your bolts when u can outsource the ENTIRE MAIN BODY #TO MULTIPLE COMPANIES #buzzy

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davidaugust · 2 months

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Come on, would a massive defense contractor really have any hand in the death between testimonies of a whistleblower when individuals at that company could personally face financial and criminal consequences for things the person testifying was going to say?

I mean to even suggest such a thing is ludicrous. Boeing would never have any part in killing a whistleblower. It is literally the last thing they would do. They don’t even make movies about that sort of thing, that’s how crazy that pure fantasy is.

From the article:

“At the time of his death, Mr Barnett had been in Charleston for legal interviews linked to that case.”

“Last week, he gave a formal deposition in which he was questioned by Boeing's lawyers, before being cross-examined by his own counsel.”

“He had been due to undergo further questioning on Saturday. When he did not appear, enquiries were made at his hotel.”

https://www.bbc.com/news/business-68534703

#boeing #whistleblower #defense #defence #military industrial complex #military #aviation #planes #John Barnett #787 Dreamliner #jets #commercial jets #commercial aviation #conspiracy theories

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rabbitcruiser · 1 year

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The maiden flight of the Boeing 787 Dreamliner was on December 15, 2009.

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head-post · 10 days

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787 Dreamliner “defective” – Boeing quality engineer

A Boeing whistleblower told a US Senate hearing that he faced threats and verbal abuse after raising safety concerns because he said the manufacturer was producing “defective” planes, according to iNews.

Quality engineer Sam Salehpour appeared before the Senate Permanent Subcommittee on Investigations on Wednesday, one of two hearings on Boeing since the mid-air cabin panel explosion in January.

The Alaska Airlines incident triggered a crisis at the company, prompting a management reshuffle, with US regulators imposing restrictions on its production. Salehpour also told the committee he feared “physical violence” after raising concerns, including the discovery of a gap between parts of the 787 Dreamliner’s fuselage.

“They call you on your personal phone to let you know that they know where you live. They know where you are. And they can hurt you. The threats … really scare me, believe me, but I am at peace. If something happens to me, I am at peace because I feel like by coming forward, I will be saving a lot of lives … whatever happens, it happens.”

Read more HERE

#world news #world politics #news #boeing #787 dreamliner #faa #usa #usa news #usa politics #usa today #us politics #us news #us senate

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stickynotebirds · 29 days

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301. Boeing 787-9 Dreamliner (April fools)

#todays bird #birdblr #artists on tumblr #birds #bird of the day #bird #Boeing 787-9 Dreamliner #april first #april fools #april fools day

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nocternalrandomness · 8 months

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"Dreamliner"

#Boeing #787 #Dreamliner #Airliner #Passenger jet #Commercial aviation #Fly #Aviation photography #Landing #Airplane

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flyingprivate · 4 months

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‘Sky Residence’,

Designed for a Boeing 787 or Dreamliner by Winch Design

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supplyside · 1 year

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787 assembly building

#Boeing #manufacturing #heavy industry #aerospace #787 #Dreamliner

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aneverydaything · 5 months

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Day 1954, 29 October 2023

#sky #flying #airlpane #boeing 787 #dreamliner #aeroplane #aircraft #flight #wing #vietnam airways #plane #grey #clouds #cloudy #weather #jet

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ladypilotuniform · 4 months

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Boeing 787 Dreamliner - dream First Officer!

#airline uniform #women in uniform #collar and tie #pilot girl #white shirt #smart women #cockpit cutie #dreamliner #Boeing 787 #hot piolot #asian pilot

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viranlly · 1 year

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7 Hours in Etihad’s First Class Suite

Let me just say right off the bat, it's not long enough.

And also, by no mean this is a review — because honestly, this flight is spectacular and I’m really not gonna get into the nitty-gritty, technical stuff (you can totally google that at your leisure).

After a whirlwind of a 10-hour, martini-filled, water-deprived stopover in London (more on that later), it’s finally time to hop into the flight that I’ve been watching over-and-over-and-over again on YouTube: the Etihad first class suite, with service to Abu Dhabi, on a Boeing 787-9.

I knew this flight was gonna be great. It’s so great it totally ruins flying (any other way) for me.

The second I stepped on the plane and the flight attendant got a glance of my seat number, *ahem* 1A, you could see almost a mini panic as she was trying to find the first class FA to take me to my personal suite. Yes, not a pod, not a seat — a suite. Bed, dining table for two and closet space included.

Trying not to lose my mind next to the couple who’s clearly done this before, I calmly sat down to make sure everything was okay (as if anything would go wrong). Noise cancelling earphones, check. Entertainment centre. check. Mini bar, stocked. Acqua di Parma amenity kit and faux fur throw, check, check, check. I took a decent amount of content yet I forgot to take a photo of the actual suite without me in it — amateur. I guess I’ll have to remind myself, for next time.

"This smells, tastes, and feels rich" I said to myself as I sipped the 2006 Charles Heidsieck Brut (bless pre-departure champagne) that's served alongside Arabic coffee, dates, and cold towel. I was fully living the Sex and The City 2 Movie fantasy, with less marital issues and no sheikh paying for the trip. As they're boarding the rest of the plebs plane, my assigned flight attendant went through a laundry list of preferences for the rest of the flight: dinner service, wine pairing, water (still or sparkling), level of privacy, and more importantly what champagne would I like for right after take-off — The answer, was rosé, by the way.

She then dropped off a bag of loungewear for me to change to if I prefer, which, I absolutely needed to, since I was wearing a very London-specific Thom Browne tartan suit to dress the part with not enough room to handle every menu items we're about to devour.

I was utterly torn, between drinking as much 2002 vintage champagne until I’m unconscious in this suite or catching up on sleep as we had a 17 hour layover in Abu Dhabi awaited us.

As I continued to ponder, the plane took off. Never in my life I witnessed a take off this smooth, this quite— it’s almost like the engines just whisper “let’s go girls” oh so subtly. And not three minutes after, a glistening, freshly popped, frosty bottle of Champagne Duval-Leroy Rosé Prestige showed up at my door. And this, marked the beginning of the most incredible three-hour dining experience in the sky.

A change of clothes, fresh towel, and a switch to Duval-Leroy Femme de Champagne 2002 later, the caviar service begins — A proper caviar service. With blinis en accompagnement, and of course, the mother of pearl spoon that I almost smuggled into my amenity kit.

“Would you like some more champagne”, she asked, fully knowing we finished half a bottle within the first 15 mins of dinner. I mean, what kind of monster would say no? By the time the lobster course arrived, we’re one bottle in, and flying has never felt better. We managed to go through most to the wine list (pictured below) and honestly, this list slaps. Hard. Hard enough to piss off some somm friends.

The Jacques Prieur was stunning, oh-so-fragrant and crisp, with balanced salinity to finish. The Pascal Jolivet was delightfully expressive with lovely, lingering mouthfeel. By the time we wanted to taste the riesling, the palate cleanser arrived, followed by the main course shortly. Yes, there’s a palate cleanser course.

Cooking tenderloin to a perfect medium rare is as hard as it is for some restaurants with fully equipped kitchen. Somehow, Etihad nails it, 30,000ft in the air — now that’s impressive. Whatever magic compartment they have in their galley, it works. For the wine, I managed to tasted all the reds and well, big surprise (not really), the Cabernet plays so elegantly with this perfectly cooked piece of meat.

The stretchy pyjama pants were barely holding it anymore but I still had to save some room for dessert — creme brûlée with a side of Haagen Dasz ice cream, which I washed down with another glass of the ’02 Femme de Champagne.

*Knock knock* “Would you like me to make the bed for you?” - a sentence I don’t hear enough on the ground, let alone in the sky. Honestly, It’s even more special when it’s asked on an Acqua di Parma-scented cabin. As she’s getting my bed ready, we took a little stroll around the plane to see where the rest of the people lived, and you know, stretched… I returned to a fully made bed with a side of crippling anxiety, knowing that for the rest of our journey, there’s no first class cabin on the planes — scary, I know (Kidding, Etihad’s business cabins aren’t so bad). Nothing another glass of champagne couldn’t fix at this point. So I ordered bed-side champagne to calm me down. *closed doors*

I went to bed, half-drunk, fully stuffed and extremely exhausted. The 3-hr nap I had was clearly not enough to prepare me for what’s waiting for us on the other side. But frankly, that was a very comfortable nap. The flight attendant gently nudge me to notify that it’s time for breakfast. I woke up still drunk, still full, with 90-something minute left on this flight. I couldn’t possibly eat another bite. What was supposed to be an omelette and caviar breakfast, turned into a coffee and champagne kind.

Never thought hearing “thirty minutes to landing” could make someone feel so sad, but there I was, back in my suit, sipping the last of the ’02 Femme de Champagne, not ready to leave the flight.

Thank you Etihad for the most incredible 7 hours in the sky, Michelin-star-worthy (I said what I said) dinner experience, and if you’re reading this, I’m ready for another trip on the first class suite, and hopefully on the A380 next time.

See you in Abu Dhabi!

#Etihad #Etihad Airways #First Class #First Class Cabin #First Class Flight #World Traveller #Luxury Travel #Travel #Boeing 787 #B787 #B789 #Dreamliner #menswear #champagne #caviar #michelin star #thom browne #thombrowne #menstyle

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izzyliker · 1 year

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how many breeds of airplane would u say u can identify by now?

Zero because they all look completely different on the inside bc airlines are freaks . except for the beloved boeing 757 which i would recognize anywhere, airbus has nothing on you, beautiful horse,

#also from the outside the 787 is very difficult to misidentify because they slap dreamliner on that beast in huge letters #which is great bc objectively that name slaps

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aerospace-anant · 2 years

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The coolest commercial jet in the world??!!

INTRODUCTION

The days of the a380 and the humped 747 are gone and the 787 dreamliner is at the forefront of this revolution making it my favourite commercial airliner.

MATERIAL

About 50 percent of it is made of carbon fiber composite making it the first commercial jet in the world to be made up primarily of this material.

Composites are composed of 2 or more materials. Carbon reinforced plastics are composed of extremely strong carbon fibres bound together by plastic.

Carbon fibre is very strong and very light. It is 5 times stronger than steel and twice as stiff. Since they are very thin strands, thy can’t create solid structures, therefore, are bounded together by the plastic resin otherwise they would just form a strong but flexible fabric. Which is useful as it can be made into any shape required thus helping in forming the smooth curves of a jet.

Fun Fact- Boeing had to make customised ovens for the resin to heat in after it had been laid on the mould.

The 787 can also accommodate large windows on its fuselage as it is made up of composites. A hole this large on an aluminium jet would result in build up of stress around the window boundaries due to deviation of stress contours around the holes. Over a period of time, this would lead to damage on the body of the jet which will shorten the lifespan of the jet by a lot.

Aluminium based jets also pose another problem that has been solved by the use of carbon fibre composite. Use of joints and fasteners to rivet the pieces of aluminium together created small bumps and imperfections on the surface of the jet that created a lot of drag. Since the fuselage is now essentially a monolithic structure made of carbon composite, this drag is eliminated.

WINGS Wing Spar is the main structural component of a wing and its main job is to resist the upward bending force. In the 787 dreamliner, it is made up of carbon fibre composites and are structured by aluminium plates. This structure is hollow and acts as a space to store fuel in the jet. Carbon fibre composites have another quality that make them better for making wings. Carbon fibre composites can deform about 1.9% before entering the plastic region whereas aluminium can deform less than 1%.

(stress-strain graph depicting elastic and plastic regions. Source- https://www.smlease.com/entries/mechanical-design-basics/stress-strain-curve-diagram/)

Therefore, the wings can be super flexible. During the flight, the wingtips of a 787 dreamliner can move upward by about 3m.

The wings of a 787 are not the same as that of other aluminium jets. Due to its high flexibility, engineers designed the wings with a high aspect ratio. Aspect ratio is the ratio of the wing span to the mean chord of the wing. Gliders have high aspect ratio and the delta wings of a fighter jet have low aspect ratio. The 777 had an aspect ratio of 9 but the 787 has the aspect ratio of 11!

Thus even though composites are stiffer than aluminium, the wings of 787 bend more due to higher aspect ratio.

Higher aspect ratio means a larger wingspan as the vortex drags at the tip of wing, by spreading the area of wing over a longer wing, we minimize the pressure that drives vortices thus, the energy loss due to vortex drag is reduced. Another difference wings of the 787 dreamliner is the airfoil itself. The 787 uses a supercritical airfoil.

Tested in the early 1970s by NASA at the Dryden Flight Research Centre is now universally recognized by the aviation industry as a wing design that increases flying efficiency and helps lower fuel costs. Conventional wings are rounded on top and flat on the bottom. The SCW is flatter on the top, rounded on the bottom, and the upper trailing edge is accented with a downward curve to restore lift lost by flattening the upper surface.

THE PROBLEM WITH COMPOSITES

One of the things that stands out the most in the material composition of the 787 is the extensive use of titanium over aluminium since titanium is an expensive metal.

Aluminium on its own doesn’t corrode but when kept near carbon fibre, it oxidises rapidly. This is due to a phenomenon known as galvanic corrosion. When 2 materials with dissimilar electric potentials are kept in contact with each other with an electrolyte such as salt water, exchange of ions takes place.

Fun Fact- To reduce the cost of manufacturing Titanium, Boeing partnered with Norsk Titanium which 3-D print titanium parts thus eliminating the wastage of metal.

There is another issue with composites, even though carbon fibre is a good conductor of electricity, the plastic resin is an insulator and thus doesn’t allow electricity to conduct through it in case of lightning strikes. Thus, Boeing had to add strips of copper all around the fuselage to help it conduct lightning.

BIBLIOGRAPHY:

https://www.nasa.gov/pdf/89232main_TF-2004-13-DFRC.pdf

https://www.nasa.gov/centers/armstrong/news/FactSheets/FS-044-DFRC.html

https://www.smlease.com/entries/mechanical-design-basics/stress-strain-curve-diagram/

https://www.innovativecomposite.com/what-is-carbon-fiber/#:~:text=Carbon%20Fiber%20is%20a%20polymer,steel%20and%20twice%20as%20stiff.

https://www.sciencedirect.com/topics/engineering/boeing-787-dreamliner

https://www.aerospace-technology.com/projects/dreamliner/

https://www.boeing.com/commercial/787/by-design/#/advanced-composite-use

https://www.youtube.com/watch?v=lapFQl6RezA

#boeing #physics #science #aerospace #tech #aerodynamics #engineer #engineering #flights #airlines #pilotstuff #boeing 787 #dreamliner #composites #wings

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rabbitcruiser · 5 months