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Why does flying add pounds to body weight?
Flying can cause temporary water retention in the body due to changes in air pressure and altitude. This can lead to bloating and a feeling of being heavier while flying, but the weight gain is typically just water retention and will subside once you land and rehydrate.
How does the helicopter stay stationary in the air?
Two things keep a helicopter flying, and another keeps it flying straight. To take off: 1) The blades are shaped like the wings of an airplane and create a difference in pressure (high underneath the wing, low above). This difference in pressure "pushes" the helicopter upwards (lift). But because of gravity, however, there might not be enough lift to take off from the ground. 2) In order to take off, the blades must rotate at supersonic speeds (to be stronger than gravity's push downwards), this make it possible to gain altitude. To "Fly:" 1) A helicopter's blades in air act like a boat's propeller in water. If the blades rotate at an angle, it will start moving. To make the helicopter hover, the blades must be perfectly straight up. At the same time, the rotating blades make the helicopter itself rotate the other way (about the axis of rotation). In a GPS, the helicopter would not be going anywhere like this (with no angle on the blades), but the Direction at which it is looking will be changing in circles 2) Helicopters need a way to fix this crazy-out-of-control spinning. They can use a tail rotor for this, but they can also use a "twin" set of blades that rotate in opposite directions (counter-rotating blades). With the addition of counter-spinning blades, now the GPS will be pointing at 1 direction. in summary: 1) By keeping the blades rotating fast enough to be lifting with the same force as gravity is pushing down, the altitude is kept the same. 2) By keeping the Blades from spinning at an angle, the Helicopter does not move to the sides. 3) By using a counter-rotating blades set, the helicopter is able to keep looking at one direction. with these 3 things, Helicopter are able to hover in air, and their GPS can be kept and a fixed height, at fixed position on a map, and at a fixed direction.
What is the difference between atmosphere pressure and water pressure?
Atmospheric pressure is the pressure exerted by the weight of the atmosphere above a given point, while water pressure is the force exerted by water on an object or surface due to the depth of the water. Atmospheric pressure decreases with altitude, while water pressure increases with depth.
What makes a needle to float in water?
A needle can float on water due to surface tension. When the needle is carefully placed on the surface of the water, its weight is not enough to break the surface tension created by the water molecules, causing it to float.
What has more pressure on an object 260 feet depth of water or 35000 feet of altitude?
35000 feet of altitude exerts more pressure on an object compared to 260 feet of water depth. This is because the pressure exerted by the atmosphere decreases as altitude increases, while the pressure exerted by water increases as depth increases.
What are the chances of dying in a helicopter crash?
If you are flying over a dense forest, over deep water, and over high snow, and the helicopter suddenly crashes you have a pretty chance of getting out of the helicopter.
Can great white sharks take down helicopters?
They don't. That pic is a fake, a montage.
Is there a Skimming aircraft structure flying fast on top of water surface?
Yes there are. They float and can land on water.
How far deep do flying fish live?
Flying fish are typically found in surface waters of the ocean, where they can leap and glide to escape predators. They are not deep-water species and do not live at great depths. Flying fish generally stay within the top few meters of the water column.
Do you have to be able to swim to work on an oil rig?
Not always. If you get transferred by boat to the rig it might not be a requirement. If you work on rigs where you get transferred by helicopter, you will have to be able to at least swim from a helicopter body from 3 to 4 meters below the water surface to the surface. This might be the only time you will ever need to be able to swim in the unlikely event of a helicopter ditching into the sea. Other times there will always be flotation devices ready. There is a training course required for operations with helicopter transfers. It is called HUET (Helicopter Underwater Escape Training). During this course you will be placed in a helicopter fuselage and dropped into the water. Once it is submerged and settled, only then can you undo the seat belts and escape via door or window (depending where you sit in the helicopter) to the surface. You are not allowed to inflate a flotation/life vest until you reach the surface.
Why does flying add pounds to body weight?
Flying can cause temporary water retention in the body due to changes in air pressure and altitude. This can lead to bloating and a feeling of being heavier while flying, but the weight gain is typically just water retention and will subside once you land and rehydrate.
Is the vapor pressure of water lower at higher altitude?
Yes, the vapor pressure of water is lower at higher altitudes due to the reduced atmospheric pressure. As altitude increases, the fewer molecules in the air exert less pressure on the water's surface, causing it to evaporate more slowly.
Why is john white famous?
he is famous for flying around the world in 3 days and only 2 stops 3 bottles of water and 3 sacs of food in a small helicopter.
Are there special helicopters for water?
yes, there are but it depends what you mean. there are helicopters that can land on water, carry water(firefighter helicopter),amphibious helicopter,etc...
What is the answer it the riddle There is a scubadiver with an empty air tank dead in the middle of the forest His body is dry and there is no water around How did he get there?
One possible answer involves a forest fire and a very charred scuba diver. During a fire a water carrying helicopter collected water from the sea in order to extinguish it. However the helicopter also picked up the scuba diver, in the sea water, and the diver was killed when he was dumped in the middle of the fire, most likely from a high altitude.
Why do frogs like still water?
In still water, frogs can see the ripples created when flying insects (their food) touch the water surface to drink or lay eggs.
How high is south lake Tahoe?
Lake Tahoe's surface elevation level is reported to be 6,225 feet (1,897 meters).
