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carsthatnevermadeitetc · 4 months

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Colani GT2, 1974. Luigi Colani built his first Volkswagen-based GT in 1960, the GT2 was also based on a Beetle but any similarity to the base car was limited to the rear lights. The radically aerodynamic car was kept by Colani himself and he used it to traverse the Indian subcontinent and he continued to develop it. The final version resides in the Colani museum.

#Colani #Colani GT2 #1974 #design study #Volkswagen Bettle #rear engine #aerodynamic #Luigi Colani #gullwing doors

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mindblowingscience · 3 months

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The Federal Aviation Administration receives thousands of complaints every year about the characteristic loud buzzing produced as drone propellers slice through the air. That noise is an issue in other countries, too: Canada and England, for instance, report a sharp uptick in similar complaints over the last several years. Experts believe noise pollution caused by these unmanned aerial vehicles will only worsen as they are increasingly used for package delivery, photography, emergency response, and more.

#Science #Mechanical Engineering #Aerodynamics #Noise Pollution #Drones #Leonardo da Vinci

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britsyankswheels24 · 2 months

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🇺🇲 Step into the glamour of the 1950s with the iconic Chrysler New Yorker of 1957—a symbol of luxury, style, and innovation in the automotive world!

👉 The year 1957 marked a pinnacle moment for Chrysler as it unveiled the stunning New Yorker model, captivating enthusiasts with its bold design and advanced features. The 1957 model year Chrysler cars were redesigned with Virgil Exner's "Forward Look" at the cost of $300 million when Chrysler took on a loan in 1954 from Prudential Insurance to pay for expansion and updated car designs.

🚘 As one of the flagship models in Chrysler's lineup, the New Yorker exuded elegance and sophistication, setting new standards for the automotive industry. Boasting a sleek and aerodynamic body, the 1957 New Yorker captivated onlookers with its distinctive grille, chrome accents, and sleek lines that epitomized the spirit of the era's automotive design. Inside, passengers were treated to lavish comfort and opulent amenities, making every journey a luxurious experience.

🛞 Under the hood, the New Yorker showcased Chrysler's commitment to performance and innovation. Equipped with powerful V8 engines and advanced engineering, the 1957 model delivered a smooth and exhilarating driving experience, earning accolades for its exceptional performance on the road.

👑 Beyond its stylish exterior and impressive performance, the 1957 Chrysler New Yorker represented a symbol of status and prestige. As a favorite among discerning drivers and automotive enthusiasts, it left an indelible mark on the automotive landscape, solidifying its place in history as a timeless classic.

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noosphe-re · 11 days

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Low Speed Numerical Aerodynamic Analysis of New Designed 3D Transport Aircraft, by Hacı Sogukpinar, Department of Electric and Energy, Vocational School, University of Adiyaman, Adiyaman 02040, Turkey

#aerodynamics #airplanes #flight #aeronautics #science #physics #engineering

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blackswaneuroparedux · 1 year

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Aerodynamics are for people who can't build engines.

- Enzo Ferrari

Tell that to Honda who make Red Bull’s engine.

#ferrari #enzo ferrari #quote #F1 #formula one #grand prix #design #aerodynamics #engine #red bull #honda #motorsports #car design

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en-wheelz-me · 7 months

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#volvo #supertruck 2 #efficiency #goals #focus #aerodynamics #advanced #engineering #truck #trucks #future trucks #volvo trucks

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whilomm · 1 day

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"helicopter flying through foggy mountains crashes" yeah thats normal its like enrichment for them

#buzzy #world news #iran #listen im not sauing theres zero chance of foul play but listen if you hear hooves think horses not zebras #and if you hear helicopter crash think helicopters are an affront to god and every second they spend in yhe air they are defuing nature #not oh it must have been on purpose #like that quote thats been going around #if a planes engines go out it still wants to fly its aerodynamic itll glide b #if a helicopters engines go out best start praying

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sizorama · 5 months

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Plane is like love, it's presence gives you warmth and feels like the moments spent with it passes quickly, though every second with it lasts longer than a minute.

This beautiful piece of engineering might not last super long and be replaced with some other ultimate aerodynamic transport [or even something cool like teleportation ¯\(°_o)/¯ ], but it will always remain a big part of my cheerful memories, I could never forget it.

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sebnameyourcar · 8 months

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something that remains so fucking insane to me is the amount of engineers i know who work for f1 teams who just.. don’t watch f1. it’s absolutely mad. utter devotion to the concept of engineering and nothing else. honestly you have to respect it

#three guys from college (2 work for RB and one did an internship with merc) genuinely couldn’t tell you the first thing about f1 #but are so obsessed with aerodynamics that it borders on insanity #its sooo interesting to me bc i feel like people who study… idk sports science or sports physio therapy usually fell in love with a sport 1s #but for engineers it’s either the other way around or they don’t fall in love with f1 as a sport at all #maybe it’s not a bad thing tbf like it removes biases etc and means a lot of personnel move teams with little fuss #NECESSARY CAVEAT: there are all irish people im talking about and there isn’t a Huge f1 culture here

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doolallymagpie · 8 months

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hm. a Mercury LAM. possibly also a Mercury II LAM.

#battletech #mercury’s a good ‘mech and it looks cool as well #seems easy enough to make it aerodynamic and put a big jet engine on it #LAMs seem to be a weird out-of-universe technological dead end for some reason

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carsthatnevermadeitetc · 9 months

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Colani-BMW 700, 1963. A concept car designed by German aerodynamicist Luigi Colani based on the rear-engined BMW 700 saloon. It was notable as the world's first vehicle with a self-supporting plastic monocoque body. With a Cd factor of 0.22 it was capable of 200km/h (120mph) despite being powered by a 700cc flat twin engine.

#BMW #Colani #Colani-BMW #Colani-BMW 700 #rear engine #flat twin #aerodynamic #concept #prototype #design study #experimental car #world first #plastic monocoque #1963 #Luigi Colani

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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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viper-motorsports · 1 year