why wings are swept back?
391776
It has the effect of delaying the shock waves and accompanying aerodynamic drag rise caused by fluid compressibility near the speed of sound, improving performance. Swept wings are therefore almost always used on jet aircraft designed to fly at these speeds.
524042
They don't fold in on my other halfs car (Ford Ka). A design fault I know. And as soon as any force/kick is applied to them, the stalks break attacking the wing mirror to the car. Flipping annoying because it means a trip to the scrapyard and time fixing the new wing mirrors to the car.
173559
Flocking also enables birds to fly further using less energy because when the strong leader bird flaps its wings it creates uplift for the birds behind – each bird (except the leader) is flying in the up-wash from the wing of the bird in front. This enables the flock to use less energy and reduces fatigue.
388687
How can birds fly when it rains? Birds fly by forcing air downwards with their wings. On the upstroke, the feathers pivot to let the air pass through them, but on the downstroke they close – similar to a venetian blind – and push against the air. When it rains, the same principles apply.
1041957
Airplane wings are shaped to make air move faster over the top of the wing. When air moves faster, the pressure of the air decreases. So the pressure on the top of the wing is less than the pressure on the bottom of the wing. The difference in pressure creates a force on the wing that lifts the wing up into the air.
1074949
It is also used by some species to display during the breeding season and to reach safe isolated places for nesting. Flight is more energetically expensive in larger birds, and many of the largest species fly by soaring and gliding (without flapping their wings) as much as possible.
537359
When an aircraft with a conventional wing nears a speed of sound (Mach 1), air flowing across the top of the wing moves faster and becomes supersonic. ... Supercritical wings have a flat-on-top "upside down" look. As air moves across the top of a SCW it does not speed up nearly as much as over a curved upper surface.
917707
because decades of testing has proven that rear spoilers make cars perform better at high speeds. ... The term "spoiler" is often mistakenly used interchangeably with "wing". An automotive wing is a device whose intended design is to generate downforce as air passes around it, not simply disrupt existing airflow patterns.
210650
First, the wings themselves are almost all skin and fat, which are certainly not good for you. Second, they're deep fried. Third, they're tossed in a sauce that's (according to the commonly-accepted recipe) almost 50 percent butter.
325304
as the air passes over the car/wing, the spoilers create an area of high pressure that alters the flow and reduces the amount of lift that is generated. Spoilers also produce drag which in a plane can help to get the aircraft slowed but in a car is purely a negative force.
244030
And the three stacked rows of seats move vertically up and down together. It's this vertical motion that really sets Flight of Passage apart from other simulators or flying theaters, as the dropping sensation really helps sell the feeling of free-fall when your beast dives off of a cliff.
87379
That's because it's extremely common for feet and ankles to swell — a condition technically known as “gravitational oedema”— when you fly. It's also a typically harmless phenomenon. The fact is, you have just been sitting too long — and all the liquids (i.e. blood) in your body have sunk to your feet.
1115736
Why turbulence is no big deal. It can feel like the scariest part of flying, but turbulence is no cause for alarm. ... Mechanical turbulence is caused by the landscape. Mountains or tall buildings can distort the wind flow in the sky above them.
289690
Some pads have extra material on the sides called 'wings'. The wings fold over the edges of the middle of your undies so that the pad stays securely in place and gives you extra protection against leaks. ... Some girls find the pads without wings less fussy to stick and re-stick if required.
770561
First, the wings themselves are almost all skin and fat, which are certainly not good for you. Second, they're deep fried. ... Each wing also contains about 14 grams of fat, 5.4 grams of saturated fat, one-half gram of trans fat, nearly 40 milligrams of cholesterol, and 284 milligrams of sodium.
1403004
In-flight savings Ryanair purchase seats that don't recline for example, as they are cheaper both to buy and maintain. Equally, the lack of back pockets on these seats means less time spent cleaning between flights, thus saving more time.
807316
It's best described as a chineless gull wing. The hull shape captures and efficiently redirects otherwise wasted bow wave energy downward to create lift.