AMS 274 - Final Cake Eating Sesh Exam Questions and Answers
Who patented the first turbine engine(to function on a test stand)? - -Frank Whittle
-What did Frank Whittle also patent? - -Turbofan
-What was Whittle's most challenging obstacle designing the turbine engine? - -The
combustor
-What was General Electric's part in turbine engine history? - -First USA turbine
manufacturer in the "Jet Race"
-4 types of jet engines - -- Rocket
- Ramjet
- Pulsejet
- Turbojet
-What type of jet engine carries it's own oxygen supply? - -Rocket
-What are the 4 types of turbojets? - -- Turbojet
- Turbofan
- Turboprop
- Turboshaft
-2 types of thrust producing engines - -- Turbojet
- Turbofan
-2 types of torque producing engines - -- Turboprop
- Turboshaft
-Inlet Guide Vane (IGV) - -Stationary airfoils that direct air into the compressor blades at
the optimum angle
-Nozzle Diaphragm - -Stationary airfoils that direct air into the turbine blades at the
optimum angle
-Diffuser - -Converts the kinetic(velocity) energy of the compressor discharge air into
pressure
-3 types of combustors - -- Annular
- Can-Annular
- Multi-Can
-The compressor section consists of what in what order? - -Rotor then stator
, -The turbine section consists of what in what order? - -Stator then Rotor
-Afterburner - -Supplements the normal thrust by increasing the acceleration of the air
mass through an additional temperature rise
-Exhaust Gas Temperature (EGT) - -Temperature taken at the turbine exit
-Hot Start - -Exhaust temperature exceeds prescribed limits during start
-Hung Start - -During startup, RPM does not increase to normal idle value
-Lean-Die-Out - -A weak fuel to air mixture along with normal airflow through a turbine
engine
-Engine Pressure Ratio (EPR) - -Ratio of the pressure exiting the turbine section and the
pressure entering the compressor inlet
-Pressure ratio formula - -Turbine Outlet / Compressor Inlet
-Standard Day Conditions - -Pressure: 29.92 Hg
Temperature: 59°F
-Force Formula - -Force (F) = Pressure (P) x Area (A)
-Velocity Formula - -Velocity (V) = Distance (D) / Time (T)Acceleration Formula
-Acceleration Formula - -Acceleration (A) = Final Velocity (V2) - Initial Velocity (V1) /
Time (T)
-The highest gas pressure/static pressure is between the _____ and the _____. - -Diffuser
Combustor
-Newton's Third Law - -For every action there is an equal and opposite reaction
-Bypass Ratios - -Low: 1-2 : 1
Med: 2-3 : 1
High: 4-9 : 1
Ultra High: 10-30 : 1
-What turbine engine was designed for best fuel efficiency? - -Unducted Fan (UDF)
-What was significant about the Bell XP-59 Airacomet? - -It was the first first flow turbojet
aircraft
-What was the first successful jet airliner? - -Boeing 707
Who patented the first turbine engine(to function on a test stand)? - -Frank Whittle
-What did Frank Whittle also patent? - -Turbofan
-What was Whittle's most challenging obstacle designing the turbine engine? - -The
combustor
-What was General Electric's part in turbine engine history? - -First USA turbine
manufacturer in the "Jet Race"
-4 types of jet engines - -- Rocket
- Ramjet
- Pulsejet
- Turbojet
-What type of jet engine carries it's own oxygen supply? - -Rocket
-What are the 4 types of turbojets? - -- Turbojet
- Turbofan
- Turboprop
- Turboshaft
-2 types of thrust producing engines - -- Turbojet
- Turbofan
-2 types of torque producing engines - -- Turboprop
- Turboshaft
-Inlet Guide Vane (IGV) - -Stationary airfoils that direct air into the compressor blades at
the optimum angle
-Nozzle Diaphragm - -Stationary airfoils that direct air into the turbine blades at the
optimum angle
-Diffuser - -Converts the kinetic(velocity) energy of the compressor discharge air into
pressure
-3 types of combustors - -- Annular
- Can-Annular
- Multi-Can
-The compressor section consists of what in what order? - -Rotor then stator
, -The turbine section consists of what in what order? - -Stator then Rotor
-Afterburner - -Supplements the normal thrust by increasing the acceleration of the air
mass through an additional temperature rise
-Exhaust Gas Temperature (EGT) - -Temperature taken at the turbine exit
-Hot Start - -Exhaust temperature exceeds prescribed limits during start
-Hung Start - -During startup, RPM does not increase to normal idle value
-Lean-Die-Out - -A weak fuel to air mixture along with normal airflow through a turbine
engine
-Engine Pressure Ratio (EPR) - -Ratio of the pressure exiting the turbine section and the
pressure entering the compressor inlet
-Pressure ratio formula - -Turbine Outlet / Compressor Inlet
-Standard Day Conditions - -Pressure: 29.92 Hg
Temperature: 59°F
-Force Formula - -Force (F) = Pressure (P) x Area (A)
-Velocity Formula - -Velocity (V) = Distance (D) / Time (T)Acceleration Formula
-Acceleration Formula - -Acceleration (A) = Final Velocity (V2) - Initial Velocity (V1) /
Time (T)
-The highest gas pressure/static pressure is between the _____ and the _____. - -Diffuser
Combustor
-Newton's Third Law - -For every action there is an equal and opposite reaction
-Bypass Ratios - -Low: 1-2 : 1
Med: 2-3 : 1
High: 4-9 : 1
Ultra High: 10-30 : 1
-What turbine engine was designed for best fuel efficiency? - -Unducted Fan (UDF)
-What was significant about the Bell XP-59 Airacomet? - -It was the first first flow turbojet
aircraft
-What was the first successful jet airliner? - -Boeing 707
