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17 Cards in this Set
- Front
- Back
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What is the main purpose of the traversing system? |
Allows the helo to be moved safely from the hangar to the launching area and return after Recovery |
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What is the speed range of the traverse winch |
Up to 12in/ sec |
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Briefly explain how the traverse cables are secured to the drum |
The forward cable is single wrapped to the motor end and the aft cable to the bearing end then both secured by clamps |
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How much tension must the traverse drum be able to withstand |
10000 lbs of force |
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What is the purpose of the downsheaves and take up sheaves |
The down sheave assembly guides the traverse cables through the deck into the RAST room. The take up sheaves guide the traverse cables between the down sheave and the traverse drum. The take up sheave is spring loaded and react to cable tension |
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How is the tension cables adjusted? |
A tensioner assemble is fitted in the track. By right leaning or loosening a nut at the end of a threaded rod of the tensioner assemble |
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What is the main purpose of the hydrostatic Valve |
It is used to protect the high and low systems from overpressure |
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List the valves which are part of the hydrostatic valve assembly and their settings |
Shuttle valve Two 3200 relief valves One 150 psi relief valve |
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What is the nose guide winch system used for |
To align the helo after landing |
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How do we ensure the new cable is single wrapped |
A helical groove and cable follower that slides along a shaft |
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What type of hydraulic pump is used in the ngw sub system and how is it driven |
Two identical gear pumps driven by a common shaft. The stbd pump is belt driven by the prime motor |
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What type of hydraulic pump is used in the ngw sub system and how is it driven |
Two identical gear pumps driven by a common shaft. The stbd pump is belt driven by the prime motor |
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How is the ngw motor shaft coupled to the intermediate shaft and for what reason |
A splines coupling. It allows for easy removal for maintenance |
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What is the purpose of the sheaves assembly |
It directs and carries the cable between the drum and the exit sheaves located on the flight deck |
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What is the maximum amount of tension for the ngw cables |
4000lbs |
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What are the settings for the high and low pressure relief valves in the ngw |
Hprv- between 3175 and 3300 Lprv- between 80 and 100 |
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What is the maximum and minimum speed of the ngw drums |
Min 8 to 12 in/sec Max 16 in/sec |
