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STUDY ADC
ADC
| Question | Answer |
|---|---|
| in general A/C fuel systems are divided into two categories? | A/C fuel system and engine fuel system |
| the U.S. military grades of jet fuel are designated by what letters followed by a number? | JP |
| what codes show compatible fuel standards? | North Atlantic Treaty Orginization (NATO) |
| what is the alternate fuel to JP5 in the Navy and never used on ships? | JP-4 |
| JP-4 fuel density is 6.5 ppg. and its flash point is below how many degrees Fahrenheit? | 0 |
| What is the Navys primary jet fuel? | JP-5 |
| JP-5 is a kerosene-type fuel with a vapor pressure close to how many psi? | 0 |
| JP-5 will ignite at about what surface temperature? | 140F |
| JP-8 is available only in what country? | Europe |
| commercial jet fuel A-1 is equal to JP-8, A is equal to JP-5. What commercial fuel is equal to JP-4? | Jet B |
| A/C engine fuels are petroleum products manufactured from crude oil. They are classified as what? | Inflammable liquids |
| What is the temp. at which fuel vapor ignites with an outside heat source? | Flah Point |
| ships require at least a flash point of what temp. for storage and safety reasons. | 140 F |
| what is the amount of heat produced as a result of complete combustion and is expressed in calories or btu? | thermal value |
| internal resistance of liquids that tends to prevent it from flowing? | viscosity |
| A fuel container that automatically seals small holes or damage. | Self-sealing cell |
| maximum concentration of a liquid additive is? | 5% beyond this amount the material may be considered a fuel. |
| self sealing cells has how many primary layers? | 4 |
| What is an artificial substitute for crude or natural rubber? | buna rubber |
| the most common type of synthetic rubber? | Buna S |
| Two types of Bladder fuel cells? | rubber and nylon |
| two units of measuring contamination are microns for solids and? | Parst per million (PPM) for water. |
| How many microns are in 1 inch? | 400 |
| what type of water in fuel will cause corrosion faster than fresh water? | Saline |
| Specks or granules of sediment indicate particles in the visible size of about how many microns or larger? | 40 |
| Course sediment is how many microns or larger in size? | 10 |
| What consist of living organism that grow at a fuel/water interface? | Microbiological growth |
| What is the major constituent causing many of the problems associated with biological contamination of jet fuels? | Fungus |
| how many approved methods may you use to purge an aircraft fuel tank/cell? | Four |
| The tank purge method will normally keep the tank/cell safe for personnel for approximately? | 10-15 days |
| Grade 1010 oil, MIL-PRF-6081 is applied to inner liners of fuel cells when they remain empty for more than how many hours? | 72 |
| shrunken cells can be restored to original condition by placing the cell in air-circulating oven at a maximum temperature of 120F/49C for about how many hours? | 4 |
| What test is the best method of determining if any installed fuel cell has existing leaks? | air pressure |
| External tank pressure regulator maintains what amount of air pressure to each of the external tanks? | 15-18 PSI |
| All Navy fixed wing A/C use pressure feed fuel system. The basic source of this pressure is? | enginge driven pump |
| What prevents large particles from entering the fuel system? | Strainer |
| What regulates and control flow of fuel in an A/C and engine fuel system. | valves |
| What valves control fuel levels in a tank during ground fueling or tranfers to main tank? | fuel level control |
| what are installed in the fuel system wherever fuel flow in one direction is required? | check valves |
| the light weight engine hose assembly is designed for continious operating temps. of? | -40 to 300F |