It's quieter for people on the ground (planes can be loud), at altitude the air is less dense and the plane can fly faster & more efficiently, if the plane's flying above 18,000-20,000 ft, then it's above most of the weather.
People Also Ask
Aerodynamic altitude: If a commercial airliner flies too high, it will encounter less dense air passing over the wings to create lift. This can cause the plane to stall and fall out of control. Depending on the weather conditions and aircraft weight, this can occur anywhere between 40,000 and 45,000 feet.
Whether flying at night or during the day, pilots need to see some kind of horizon. They use this to determine the airplane's attitude. At night pilots will turn their gaze from outside to inside and use the artificial horizon. The artificial horizon is normally a simply globe split into two hemispheres.
The reason planes cruise at high altitudes is that they burn less fuel and can fly faster, as the air is less dense. At 30,000 feet and higher, it is also possible for aircraft to avoid weather systems, making it more comfortable onboard.
Military jets typically fly higher than commercial and business jets travel to avoid traffic and weather. They tend to cruise between 45,000 to 51,000 feet, and have powerful engines that allow them to climb to those altitudes quickly.
The highest certified altitude of an airliner was Concorde's 60,000 feet. Today some of the corporate jets can fly at 51,000 feet. Q: What is the highest cruising altitude allowed? A: Most airliners are limited to 45,000 feet or less.
Another reason that planes would choose to fly in a trajectory that resembles an arc is to account for the amount of traffic that will be in the air. Like highway systems, air space experiences a great deal of traffic. If every flight took the same trajectory, the traffic would be harder to manage.
The most common reason is that there are no airstrips or airports on many of the small islands, so if a plane had to make an emergency landing, it would be difficult to find a place to land. Additionally, the Pacific Ocean is vast and remote, so if a plane were to go down, it would be very difficult to find.
The speed record is also held by an SR-71, at 2,193 mph. This is not as high or as fast as the airplane can fly, however, it's absolute speed and altitude limits are classified. Most US military aircraft can exceed 50,000 feet, if they really really try. Again, the limits are classified.
No they do not. The cockpit itself is pretty small in most planes and none of them have dedicated toilets installed in them. Pilots use the same restroom as the passengers, usually the one in the front of the passenger cabin.
The simple answer is yes, pilots do, and are allowed to sleep during flight but there are strict rules controlling this practice. Pilots would only normally sleep on long haul flights, although sleep on short haul flights is permitted to avoid the effects of fatigue.
On many aircraft types, pilots can open the side windows in the cockpit. The main reason for this is not for ventilation or vision; it is related to aircraft safety law.
And that at cabin altitudes above 14,000 feet pilots must use oxygen at all times. And that above 15,000 feet each occupant of the aircraft must be provided supplemental oxygen. All of this is spelled out in Federal Aviation Regulations Part 91.211.