Fuel System

Question 1

Burn rate

Answer 1

~200lbs per hour

Question 2

Header Tank Lvl

Answer 2

Normal: 204
Caution: 194
Warning 179

Question 3

Landing Fuel

Answer 3

Normal Recovery: 400
Minimum: 350
Emergency: 300

Question 4

Fuel Heater Auto Shutoff

Answer 4

26v
this would be seen during a dual gen failure, the system will auto shed the system when voltage reaches 26

Question 5

Header Tank Pressure

Answer 5

Caution: 4.2psi
Warning: 4.6

Question 6

Fuel Feed Pressure

Answer 6

Min: 16
Normal: 18-55
Max: 60

Fed from the boost pumps into the header

Question 7

Tank Fuel Temperatures

Answer 7

Min: -30
Normal: -21-49
Max: 55

Question 8

Engine Fuel Pressure

Answer 8

Min: 20psi
Normal: 25-90
Max: 95

fed from the engine pump into the engine

Question 9

VIT 50 (fuel system data 2)

Answer 9

Failed solenoid closed or open data

only capable of showing what has been commanded by the AC not necessarily what is actually occuring

Question 10

VIT 1 Engine & Electronics Data

Answer 10

Fuel flow burn rate
Fuel burned
Fuel calculation
Fuel engine, hdr tnk, JPMan pressure

Question 11

VIT48 Fuel System Data 1

Answer 11

Comprehensive overview:

Fuel tank calculations
Fuel temperatures
Fuel pressures
Burn rate
Fuel burned
Total fuel

Question 12

JP Manifold Pressure

Answer 12

Min: 16psi
Normal: 18-55psi
Max: 60

If under 15psi in auto, RCM resets active fuel pump 2times, if doesn’t work, both pumps are commanded on

Question 13

Fuel Header Tank Pressure level or Low Pressure Checklist

Answer 13

Cycles through tanks to identify & lock out malfunctioning tank/solenoid
PSI Doesn’t recover? Possible
PSI recovers? Practical
VIT48

Question 14

Fuel Pump Failure Checklist

Answer 14

Indications: pump 1 or 2 failed
Auto mode activated both pumps
PSI >30 jettison one tank at a time
PSI <30 man tank select
Possible

Question 15

Fuel Solenoid Failed Open or Closed

Answer 15

Indications: fuel increase in nonselected tank, (Return sol.fail Open) and low hdr tnk lvl (feed solenoid fail. Closed)
<4.6PSI
Cycle through tanks
Lockout
Possible

Question 16

Header Tank Overpressure

Answer 16

Return solenoid failed CLOSED

Cycle through tanks
Lockout
Possible

Question 17

CG Out Of Limits

Answer 17

Indications: CG too far aft (or) fwd
Jettison fuel & weapons
Possible

*May be erroneous emergency as a result of the updated fuel calculation from a fuel tank lockout *

Question 18

Fuel tank weights

Answer 18

Header 204
Fwd 1300
Aft 790
Outboard 361ea
Inboard 374ea
Total 3764

Question 19

Fuel system overview

Answer 19

7tanks =3764lbs
7pumps (4JP 2elec. 1eng.
Manifolds (feed & return)
2heaters (per manifold)
Heat exchanger
2filters
Mass flow sensor
Ventilation box
Fuel jettison
Fuel hunt mode

Question 20

ER Tank Additions

Answer 20

Aux Engine Fuel Interfece Unit (EFIU)
Moded check valve manifold
Moded JP manifold
Moded return manifold
Fuel/Oil Exchanger
Tank
Temp Control Valve (TCV)