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Fuel
Systems
Appendix A — Fuel System Standard
17.0 — Lab Examination No. 13
Fuel Tank Impulse Test and Slosh Test cont'd
183.586 Pressure Impulse Test cont'd
17.3 Test Equipment and Schematic
|
Component
Find No. |
Title |
Description |
| 1 |
Test Platform |
A flat level platform for
mounting the fuel tank during the pressure impulse test. |
| 2 |
Positioning
Blocks |
One-inch
(2.5 cm) thick blocks or equivalent used to raise the
fill end of the tank to facilitate adding water to the
tank. |
| 3 |
GN2
or Air Supply Bottle |
Shop grade compressed air
or high purity grade GN2. |
| 4 |
Pressurant
Supply Valve |
Manually
adjustable relief valve to prevent fuel system overpressurization. |
| 5 |
Supply Pressure Gauge |
A pressure gauge to monitor
the inlet supplies GN2 or
air pressure to the system. Range 0–100-psig. |
| 6 |
Regulator |
A hand regulator
used to regulate the inlet pressure to the required test
level (3-psig). |
| 7 |
3-way, 2 position
NC Solenoid Valve |
A solenoid valve used for
cycling the pressure to the fuel tank. Controlled by Pressure
Switch (see #11). |
| 8 |
Hand Valve |
A hand operated
shutoff valve used to isolate the fuel tank from pressure
supply system. |
| 9 |
Electronic Counter |
A counter tied in electrically
to the 3-way Solenoid Valve such that every time the valve
cycles the counter registers. 25,000 capability. |
| 10 |
DC Power
Supply |
A DC power
supply for operating the 3-way Solenoid valve and counter. |
| 11 |
Pressure Switch |
A 0–20-psig range with
a 1.0-psig maximum deadband used for controlling the pressure
cycles to the tank. |
| 12 |
Relief Valve |
An overpressure
valve used for relieving excess pressure to the fuel tank
in case a failure occurs in the supply system. Set at
4.25 ±0.25-psig. |
| 13 |
Pressure Gauge |
A gauge used for monitoring
the pressure supplied to the fuel tank during each pressure
pulse. |
| 14 |
Rocker Platform |
A flat level
platform capable of having a fuel tank mounted on it and
rocking ±15 degrees at a rate of 15–20 cycles
per minute. |
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