AMT (FINALS) Flashcards
This law states that for every action, there is an equal and opposite reaction
Newton’s reaction principle (Third law)
This engine operates independently of the atmosphere
rocket engine
This type of rockets are advantageous due to their simple design, with fewer moving parts
Solid-propellant rockets
This engine requires forward motion to compress incoming air
ramjet
This type of rocket, the combustion relies on fuel and oxidizer
liquid-propellant rocket
Ramjet engines operates best at what speed
high speed
Rocket engines primarily operate on the principle of
conservation of momentum
are known for producing no exhaust
Electric propulsion system
This engine combines characteristics of both rockets and jets
scramjet engine
This type of rocket have a drawback in that they cannot be shut down once ignited
solid propellant rocket
In space, a rocket engine is powered by
fuel and oxidizer
Where does combustion in jet engine takes place
combustion chamber
Where do ramjets depend for air compression
vehicle’s speed
Electric thrusters uses what to generate energy
solar cells
Ramjets are commonly used in what type of aircraft
high-speed aircraft
This engine uses atmospheric oxygen as the oxidizer and functions best at high speeds
scramjet
Scramjets differ from ramjets because they operate at
hypersonic speeds
It provides the rocket engine oxygen for combustion
oxidizer
What speed is the ramjet most efficient
supersonic speeds
Why can the rocket engine operate in space
Does not rely on atmospheric oxygen
A ramjet engine works on the principle of
supersonic air compression without moving parts
Ramjets are efficient at ____, but less so at _____
- High speeds
- Lower speeds
produce thrust in pulsating bursts
pulse jets
is the part of a gas turbine that compresses incoming air
compressor
are commonly used in low-cost weapons systems
pulse jet engines
offer continuous and adjustable thrust, ideal for various applications
gas turbines
provide extra thrust by injecting fuel into the exhaust gases
Afterburners
are valued for their high power-to-weight ratio
gas turbine engines
This type of engine are suited for low-speed regional flights
turboprop engines
Most commercial airliners use what type of engine for efficiency
turbofan engines
Thrust ratios in turbofan engines are measured by the
ratio of bypassed air to core air
this engine transfer power to a shaft rather than producing direct thrust
turboshaft engines
This engine can improve fuel efficiency by around 15%
Ultra-High Bypass engines
Turboprop engines uses what to convert turbine rotation to drive a propeller
gearbox
How do turbofan engines produce additional thrust
bypassing air around the engine core
What engine were used in the V-1 flying bomb
pulse jet engines
the primary fuel for gas turbine engines in aviation
Aviation kerosene
Ramjet engine lacks what
compressor
Turboprop engines typically operate in the ______ knot speed range.
250-400 knot speed
primarily used in fighter jets for a quick thrust increase
afterburners
What material often used in Ultra-High Bypass engine blades for weight reduction
Titanium composites
This engine is characterized by open-rotor blades without a cowl
Unducted fan (UDF) engines
primarily spin the turbine in gas turbine engines
High-pressure gases from combustion
This type of engine is used to power helicopters
Turboshaft engines
In high-bypass turbofan engines, a ______ increases overall fuel efficiency.
larger bypass ratio
