US FAA flight rules alternate flight altitudes heading generally east with generally west. Between FL 180 (18,000 feet above Mean Sea Level, assuming that the altimeter setting is 29.92 mmHg) to FL290, eastbound flights are assigned odd-number Flight Levels (i.e., FL190, 210, 230), while westbound flights are assigned even numbers (FL200, 220, 240).
Above FL290, east and west are separated by 2,000 ft increments, but still alternating. So Eastbound gets FL 290, 330, 370, etc. while westbound flights get FL 310, 350, 390, etc.
Above FL600 is uncontrolled airspace, generally only occupied by high-altitude military aircraft. There's an old joke about that.
An Air Force pilot calls Air Traffic Control, and requests clearance to FL600. The smart-aleck air controller replies "Flight level 600? Well, if you can make it, you can take it!" The Air Force pilot calls back and says, "Roger, center, DESCENDING to Flight Level 600."
One advantage is that there is usually less turbulence at higher altitudes. I think because you are flying higher than those "pockets" of turbulence that you experience at lower altitudes.
NOT as low as those depicted in the Hollywood movie "Pearl Harbor" starring Ben Afleck. No plane flys that low in combat.
Altitude affects biomes by influencing temperature, precipitation, and atmospheric pressure. As altitude increases, temperature typically decreases, leading to different vegetation zones and biodiversity in higher elevation biomes. Precipitation patterns can also be altered at higher altitudes, impacting the types of plants and animals that can thrive in those areas.
Airplanes are pressurized at high altitudes because the air pressure outside the cabin decreases significantly, making it difficult for passengers to breathe comfortably and risking hypoxia. Pressurization ensures a safe and comfortable environment by maintaining a stable air pressure and oxygen levels similar to those experienced at lower altitudes. This helps passengers and crew avoid altitude-related health issues while allowing the aircraft to operate efficiently in the thinner atmosphere.
It depends upon the person, but the most common symptoms are headaches, nausea, vomitting, and fatigue. The people that are most prown to altitude sickness are those of 50 years and up, if you have a history of altitude sickness to start with, places that are 3,000 feet or higher, or a rapid change in altitude. As a young child, I used to have altitude sickness because I had problems with my ears, so that could also effect you. The last time I went up to a higher elevation, I used these band like bracelets called "Sea Bands" from the "Sea Products" company and those really seemed to help me. You can get them and/or pills for altitude sickness over the counter.
yes. They normally don't, because it was found they were damaging it. But they do fly through it when flying between continents (Moscow to New York, for example). The ozone layer dips pretty low over the poles.
Airplanes found them and sunk them. Aircraft were launched from escort carriers. Destroyers and Destroyer Escorts sometimes get the glory for it, but seldom could anything (in WWII) escape from those flying machines!
B747 1390 B767 955 B777 655 Total 3000 airplanes Of these 2,610 are still flying. The majority of those that are not flying are retired B747s. Source: Recent news article in "Aviation Week".
Long distance runners who train at high altitude develop greater lung capacity relative to those who train at or near sea level. Consequently, when these high altitude runners compete with runners from lower altitudes, they have an advantage regardless of whether they compete at lower or higher altitudes.
Altitude affects climate by influencing temperature and precipitation patterns similarly to how latitude does. As altitude increases, temperatures usually decrease, leading to cooler climates at higher elevations. This creates temperature variations that are similar to those seen at different latitudes on Earth. Additionally, higher altitudes can also affect air pressure, wind patterns, and humidity levels, further contributing to the resemblance between altitude and latitude in climate.
The obvious concerns are bodily injury. An airplane could easily hit someone in the eye, or if thrown fast enough lacerate the skin through collision. If you're talking about airplanes with propellers, then of course those are even more dangerous when it comes to the above safety concerns.
I have hiked up to the altitude of 14,000 feet. That airplane will be above the altitude of those clouds.