A body at rest remains at rest, a body in motion continues to move in a constant speed in a straight line unless acted on by an external force
Newton's first law of motion is also considered the definition of what term?
What is Newton's second law of motion?
An unbalanced force on a body produces or tends to produce an acceleration in the direction of the force and that the acceleration, if any, is directly proportional to the force and inversely proportional to the mass of the body.
Which law of Newton's laws best explains why a jet engine produces forward thrust?
Newton's third law of motion
What two words can best sum up Newton's third law of motion?
Action and reaction
What does Bernoulli's principle state?
When the speed of a stream of gas increases, the pressure of the gas decreses, and when the speed of the gas decreases, the pressure increases
What type of duct is used to decrease pressure and increase velocity?
how does the design of an airfoil influence pressure above and below the airfoil to produce life?
decreasing air pressure above airfoil and increasing pressure below creates lift
Ability to do work. . .
A force moves an object
The tendency of an object to maintain its direction or speed
Sometimes thought of as a physical effort
Commonly expressed as Btu's
Reduced by using lubricants
Equals force times distance
Kinetic and potential
Rate of doing work
A type of energy that results from molecular motion
What type of energy does a falling object possess?
Can energy pass from potential to kinetic and back to potential?
Which jet engine section produces the large volumes of air required for the production of thrust?
What does the combustion section do to support the production of thrust?
Introduces fuel and burns it in the air stream behind the compressor. Burning the fuel increases the air temperature and expands the air
What is the energy that is expended through the exhaust nozzle used for
thrust to propel the aircraft forward
What is used to create the propulsive force for a turboprop engine
which terms are used to express the thrust produced by a T56 engine?
horsepower and pounds of torque
which term is used to define the theoretical power of a frictionless engine?
what is friction horsepower
indicated horsepower minus brake horsepower
which type of horsepower determines the performance of the engine-propeller combination?