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100

The most common rotor architecture found on Sikorsky helicopters

What is fully-articulated?

100

The Aerodynamic force most responsible for limiting speed.

What is drag?

100

The mechanical property commonly used to characterize stiffness.

What is Young's Modulus or Elastic Modulus?

100

The designation of the first helicopter flown by Igor Sikorsky.

What is the VS-300?

100

Four presidents ago?

Who is Jeff Pino?

200

The direction most Sikorsky rotors spin, looking down.

What is counter-clockwise?

200

The non-dimensional coefficient used to describe thrust.

What is thrust coefficient?

200

The component of stress coplanar with a material cross section.

What is shear stress?