Most small airplanes are not air tight (or even completely encased) because thy do not need pressurization. Commercial planes fly at altitudes where there is not enough oxygen to sustain life, requiring pressurization.
They did, but sometimes the planes would fly very low so that the radars could not detect them.
By placing an egg inside the plastic bag
They changed science since the Wright brothers made a breakthrough that men can travel faster over water and land in less amount of time. No people can travel greater distances then they could before in a less amount of time. Now men can fly like the birds. Also, in wars, the airplanes can fly over the battle fields and drop bombs down to the enemey's camp creating an easier way to victory. There are many different ways as to it change society, these are just a few.
In a few small model airplanes, the energy of propulsion is stored in the elasticity of a twisted rubber band. Some full-sized airplanes have no on-board energy storage. They are given some gravitational potential energy by being towed to altitude by another aircraft, and then settle slowly to the ground. These are 'sailplanes' or 'gliders'. A few full-sized airplanes have been powered by the food energy stored in the individual who pedals a mechanism in order to fly them. A few others have been powered by the solar radiation that impinges upon photovoltaic panels arrayed on the wings and fuselage, with no on-board energy storage. The vast majority of present-day airplanes store the chemical energy for their operation in large tanks inside their wings, in the form of gasoline molecules.
Private jets most likelyt
Most prop planes fly any where from 1,000-5,000 ft. Airliners usually fly from 10,000-20,000 ft. Military jets fly at pretty much any altitude
Cruising speed: 528km\h for 1900D
Most cruise at around 500 MPH.
about 87mph
mach 3 that means three times the speed of sound
No, girls that are humans cannot fly on their own. However, they can fly on commercial or private airplanes to get to a destination faster or to get somewhere where driving only isn't optional.
Yes there are: Private Jets: Carry few people fast. Fighters: Fly faster and for shorter periods of time than a passenger plane. Acrobatic: Specially designed for acrobatic.
The fastest fighters in WW1 flew about 130 mph.
Because cats do not have the capability to fly airplanes.
Because people are not able to fly without a airplanes.
You are unable to fly airplanes, however you can fly helicopters.