Term
| Devices to measure temperature and pressure |
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Definition
Temp: expansion thermometers, pyrometers
Pressure: monometers, bourdon tube |
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Term
coversion: farenheit to rankine
Celcius to kelvin |
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Definition
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Term
| 1st and 2nd laws of thermodynamics |
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Definition
first: no destroy energy, only created and transferred
senond: no completely efficient thermo cycle (heat into work) |
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Term
| Latent heat of vaporization vs. fusion |
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Definition
vaporization: E required to change a fluid from a liquid to a vapor
fusion: E required for object to melt |
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Term
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Definition
| conduction, radiation, convection |
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Term
| 5 basic elements of all cycles |
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Definition
| working substance, heat source, engine, heat sink, pump or compressor |
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Term
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Definition
positive displacement: volume of fluid displaced during each cycle
impeller |
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Term
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Definition
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Term
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Definition
globe, gate, ball, butterfly
(used to shut of flow) |
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Term
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Definition
swing, ball, lift
(used to permit flow in 1 direction) |
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Term
| Components of Steam cycle |
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Definition
| boiler, steam turbine, condenser, condensate pumps, DFT, feed pump |
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Term
| Phases of working fluid in steam cycle |
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Definition
| generation, expansion, condensation, feed |
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Term
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Definition
| Rateau (impulse), Parsons (reaction) |
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Term
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Definition
| impulse, steam hits blades at high velocity, moves blades by a direct push and exits at lower velocity |
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Term
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Definition
| reaction, fixed vane, nozzles increase velocity and moving vane blades move by a reaction force or kickback |
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Term
| Why Navy uses Nuclear Power |
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Definition
unlimited range/ endurance
no need for outside material (air)
smaller engineering spaces and fuel |
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Term
| modes of radioactive decay |
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Definition
| alpha, beta, gamma, spontaneous fission |
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Term
| Fission process (where does energy come from?) |
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Definition
| 235/92 U + 1/0 n = FF1 + FF2 + (2)1/0 n + KE (difference in binding E) |
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Term
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Definition
| fission rate just sustained by the minimum number of thermal fissions (Keff=1) |
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Term
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Definition
| fission rate is decreasing since not enough thermal neutrons are produced to maintain fission reactions (Keff < 1) |
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Term
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Definition
| fission rate increasing since more than necessary thermal neutrons created (Keff > 1) |
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Term
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Definition
| -control rods, delayed neutrons, moderator (water) |
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Term
| reactor plant primary loop components |
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Definition
| containment structure, control rods, reactor, steam generator, steam line, pump, generator, turbine, cooling water condensor, cooling tower |
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Term
| How reactor Power follows Steam Demand |
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Definition
| -power inversely proportional to moderator temp |
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Term
| Four Strokes of Diesel Engine |
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Definition
Intake, Compression, Power, Exhaust
(suck, squeeze, bang, push) |
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Term
| Two stroke vs. four stroke |
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Definition
2: higher power to weight ratio, less complicated valve train
4: more efficient burning process, as size increases, power:weight improves |
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Term
| How common shaft design allows turbine to spin compressor and therefore the turbine is self sustaining |
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Definition
| common shaft between compressor and turbine, and turbine/propulsion power. continue movement after certain rpm |
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Term
| Why do ships with GTE have to have a controllable pitch propeller |
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Definition
| Turbine only operates at certain speed, change propeller pitch to slow down |
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Term
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Definition
-straight, helical, double helical
-combines two turbines to common shaft |
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Term
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Definition
| absorbs axial force and propells ship forward |
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Term
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Definition
| water through membrane, high pressure, multi-stage |
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Term
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Definition
-high efficiency @ all loads, low initial cost, reliable, few operators
-large, noisey, heavy, high maintenance |
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Term
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Definition
-light, short startup, reliable, quiet
-large amount of air, large fuel storage |
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Term
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Definition
-reliable, aux functions, eff @ cruising
-large, lots manpower, long start-up |
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Term
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Definition
-endurance, reliable, speed, no air
-high cost, heavy, long start-up |
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Term
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Definition
| -shapelessness, incompressibility, transmission of force (equally and undiminished) |
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Term
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Definition
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Term
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Definition
| opposes flow of current through circuit |
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Term
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Definition
| flow of electrical charges though a conductor |
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Term
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Definition
| force which causes electrons to move |
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Term
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Definition
| magnetic field, conductor, relative motion between the two |
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Term
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Definition
| magnetic field, conductor, current flow in conductor |
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Term
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Definition
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Term
| Resistors (parallel and series) |
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Definition
| series = + , parallel = 1/reciprocals |
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Term
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Definition
-AC more power than DC for same size
-more power than a single phase can operate with 2, but redundancy, faults |
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Term
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Definition
| rubber gloves, rope man, announce it, isolate |
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Term
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Definition
| faults ar eisolated as close to the fault as possible and furthest from power supply. done via fuses, switches,and breakers |
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Term
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Definition
| allow transfer of load from one bus to another (normal to alternate), senses voltage loss of quickly and auto transfers supply to alternate source to ensure continuity of power |
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Term
| Compressed Air compressors |
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Definition
-positive displacement: high pressure
-centrifugal: high output |
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Term
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Definition
-high: torpedo ejection, emergency blow
-low: potable water, pneumatic tools |
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Term
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Definition
-Condensor and Receiver
-Expansion Device
-Evaporator
-Compressor |
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Term
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Definition
| food, electronics, armament |
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Term
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Definition
| vertical distance between top of hull and waterline |
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Term
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Definition
| distance from waterline to lowest point of ship (keel) |
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Term
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Definition
| centerline backbone of ship, runs the lenght of the ship |
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Term
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Definition
| Deck - Frame - Compartment - Use |
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Term
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Definition
| compartment partially filled with water and causes reduction in GM = stability down |
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Term
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Definition
| solid, partial, in communication with the sea |
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Term
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Definition
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Term
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Definition
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Term
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Definition
-Electrical
-CO2 and Halon |
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Term
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Definition
-metal
-water or overboard |
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Term
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Definition
| man in charge, assistance, injured personnel, damage, Status of casualty |
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Term
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Definition
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