Why do helicopter need to made of this material?
Helicopters are made mostly of aluminium because it is strong, light and versatile
How many people will a regular helicopter carry?
There are so many small and medium helicopters there is no such thing as "regular" . Most helicopters other than large military ones, carry between 4 and 8 passengers.
How many hours can an helicopter fly?
There are many different helicopters. Most small civilian helicopters may fly for about an hour, but large passenger or military helicopters can fly for 6 hours or more.
What you're talking about really isn't feasible. The closest thing you'll find to it is the V-22 Osprey, which uses counter-rotating propellers, and can only take off and land vertically.
What causes vacuum pump rotor blades to break?
Foreign material in the substance being pumped, excessive system pressure, wear over time, poor construction/build quality, improper substance being pumped.
yes, many police departments have helicopters. Soon they will have drones too
What makes the thud thud sound on the helicopter?
That sound is the rotor blade coming from a rearward movement back around to a forward movement.