Onboard Inert Gas Generating System For a 747

Onboard Inert Gas Generating System For a 747 SP Feb. 2002

System Requirements: 1) Inert center tank to 12% O 2 at the gate in 90 minutes without the use of bleed air. 2) Inert center tank to 12% O 2 at the gate in 45 minutes using bleed air. 3) Have and optional design for inerting the center tank to 12% O 2 at the gate in 45 minutes without the use of bleed air. 4) Inert either forward or aft cargo compartment inflight, on demand, to 12% O 2 in 30 minutes.

System Components & Production Costs: Item # 1&2 Description Inlet door & screen for cooling air. Plus all system ducting. Cost 60 K Weight 30 Lb. 3 Bleed air shut off valve 4. 3 K 4 Lb. 4 Compressor 10 K 5&6 Heat exchanger & Fan 15. 2 K 22 Lb. 7 Filter 1 K 1. 5 Lb. 9 Heater . 1 K 0. 1 Lb. 20 Lb.

System Components & Production Costs: Item # Description Cost Weight 6 & 10 Temp. Regulating valve controller & sensors 5 K 3. 1 Lb. 11 Shut off valves 1” (2) 5 K 5 Lb. 12 A & B ASM’s & shell (6) 66 K 120 Lb. 15 Shut off valves 2” (2) 6 K 5 Lb. 17, 18, 19, 20 &21 Various check valves (10) 14 K 8. 2 Lb.

System Components & Production Costs: Item # Description Cost Weight Mounting Pallet 11 K 13 Lb. Non Recurring design per Model 110 K STC Application per Model 150 K

System Components & Production Costs: System cost first of Model = 460 K Each aircraft after = 200 K Total weight = 231. 9 Lb. Cost & weight does not include tank distribution or vent system modifications.