Helicopter Science and Challenges on Everest

What is one of the primary roles of helicopters at Everest base camp?

• To provide entertainment for climbers

• To transport climbers to the summit

• To conduct scientific research

• To bring supplies and evacuate sick climbers

Who invented the first practical helicopter?

• Leonardo da Vinci

• Igor Sikorsky

• Henry Ford

• Wright Brothers

Why are helicopters particularly useful in remote areas like Everest?

• They can fly faster than airplanes

• They require less infrastructure than fixed-wing aircraft

• They are cheaper to operate

• They can carry more passengers

What are the four main forces acting on an aircraft?

• Speed, Gravity, Pressure, Lift

• Speed, Drag, Weight, Pressure

• Thrust, Gravity, Pressure, Drag

• Thrust, Drag, Weight, Lift

What is a major challenge for helicopter engines at high altitudes?

• Excessive fuel consumption

• Inability to compress enough air

• Overheating

• Too much air density

How does air density affect helicopter lift at high altitudes?

• Air density has no effect on lift

• Lower air density decreases lift

• Higher air density increases lift

• Lower air density increases lift

What is a significant weight-related challenge for helicopters at high altitudes?

• The need to reduce weight to maintain lift

• The need for heavier engines

• The need for more passengers

• The need for more fuel

What is a human factor that limits helicopter performance at high altitudes?

• Pilot's hypoxia due to low oxygen levels

• Pilot's lack of experience

• Pilot fatigue

• Pilot's fear of heights

What technological advancement is helping to make helicopter parts lighter?

• Use of aluminum

• Use of carbon fiber and single crystal blades

• Use of steel alloys

• Use of plastic composites

What is a potential benefit of reducing helicopter weight?

• Longer flight durations

• Faster speeds

• Higher flying altitudes

• Increased passenger capacity