Monday, March 19, 2012

Blog Day 3

Definition of critical engine-failure speed and balanced field length
Day 3. Today we learned that the takeoff speed of a SR-71 Blackbird is 241.7mph (210knots). 1knot = 1.15mph. We also learned that the landing speed is 172.6 to 178.4mph (150 to155knots). The runwasy for the Blackbird would have to be over 2 miles long for it to be able to takeoff and land. When the Blackbird lands, it would deploy a parachute to slow it down.

Monday, March 12, 2012

Blog Day 2

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Day 2
Today we looked into the physics on how a plane or jet flies. We learned how a jet uses thrust with upwash and downwash to change direction. Also, we learned that Newton's first law relates with the jet's flight. The law states a body at rest will remain at rest, or a body in motion will continue in straight-line motion unless subjected to an external applied force.

Monday, March 5, 2012

Blog Day 1

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Day 1. Today we learned that a jet engine, called a gas turbines, sucks in air through a fan which is sprayed by fuel and electric spark lights that mix.The gas expands through the nossel in the back of the engine, then thrusts forward. This operation relates to the Newton's thrid Law. For every action there is an equal and opposite reaction.
An animated image of a jet engine to show how the air flows through the engine.