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What else can I help you with?
Why do helicopters always have a set of two blades?
Helicopters have 2 sets of blades to keep the helicopter balanced. This is due to the unique shape of the helicopter.
Why do army helicopters have two blades?
the helicopters are bigger so there needs to be a greater weight distribution
Why helicaptor have three blades?
Helicopters don't just have 3 blades. It depends on the size and weightlifting capability. Small helicopters such as a Robinson R22 have only 2 blades, the military Merlin has 5 and the Chinook has two rotors with usually 3 blades each.
What is a helicopter with two sets of blades called?
That is a twin rotoe helicopter
Do the intersection of two sets always contains a smaller number of terms than the union of two sets?
No, because the intersection of two equivalent sets will have a union the same size as its intersection.
Why don't helicopters tip over from unequal lift from the two sides of the rotor?
Helicopters have a tail rotor that counteracts the torque created by the main rotor, ensuring the helicopter remains balanced. The pilot can also adjust the pitch of the rotor blades to control lift and maintain balance. Additionally, modern helicopters are designed with sophisticated control systems that help maintain stability in flight.
Why there are 2 sets of blades in helicopter?
I will assume by "sets" you mean "pairs". The truth is, some helicopters only have one set. Some have two. Put very simply, the more blades you have, the more lift you can generate, and so the more hauling capacity you have. Eg the Chinook has TWO rotors, each with four blades. It's used to lift some very heavy objects (humvees, many personnel etc). Whereas a small R22 only has two blades, since it's not designed to be a cargo lifter. The Main rotor is generally the one that is the most forward and creates most of the lift and general directional control (forward, back, left and right banks) Where as the tail rotor provides for a counter force to the torque created by the main rotor and also give you the ability to do what is called a balanced turn (means you won't feel like you're sliding through the air)
Is there a rectangle that is not a parallelogram and why?
No there is not. Rectangles are always made of two sets of parallel lines.
Is The intersection of two nonempty sets is always nonempty?
Not necessarily. The odd integers and the even integers are two infinitely large sets. But their intersection is the null (empty) set.
What is always true about a rhombus?
1.) side lengths are equal 2.) two sets of parallel sides 3.) two sets of equal angles (opposite angles are equal)
Can every rectangle be a parallelogram?
Well, a rectangle is defined as having two sets of parallel sides and four right angles, a parallelogram is defined as having two sets of parallel sides and two sets of supplementary angles. Therefor, a rectangle is always, by definition, a parallelogram. A parallelogram is not always a rectangle, but it can be.
Why don't helicopters have two rotors?
Some do. The CH-47 has two.
