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Tu 204. Trim Tank System
The Tu 204-120 has a third fuel tank within the vertical stabilizer. This 2820
liter (745 US gallon) tank has the dual benefit of offering both additional range capability and
center of gravity (CG) optimization. Fuel may be transferred fore or aft during flight to maintain proper pitch trim without incurring the additional aerodynamic drag associated with conventional aerodynamic surface trimmers.
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In the event of a main pump failure, fuel can still be transferred from the vertical
stabilizer trim tank by a standby pump. An integrated fuel management system provides information on fuelling, total fuel, fuel flow, fuel transfer and CG position and automatically controls fuel transfer.
CG optimized by use of2820 liter (745 US gall) fuel tank in vertical
stabilizer. |
Corrosion prevention
- Condensation drain system in fuselage belly incorporating improved heat insulation
scheme
- Extensive wet fastener installation; Foam sealed airframe components
- Enameled features below passenger floor for hydraulic fluid resistance
- Exposed structures treated with corrosion-inhibiting compounds
- Fuel tanks feature internal protective coatings
The aircraft structure is composed of modern composite materials and lightweight constructional metal alloys such as
aluminum-lithium and titanium. In addition to their mechanical property advantages, these materials also give significantly improved corrosion
resistance. To further enhance corrosion resistance heat and sound insulation systems have been tailored to reduce condensation build-up and channel moisture to drain valves provided in the bottom of the
pressurized cabin section. Fasteners in key areas are assembled wet and exposed structures are treated with corrosion inhibiting compounds.
Flight safety
- Outstanding reliability and multiplexing of airplane vital systems
- Non-inflammable, non-toxic, smoke-inhibiting materials in interior
- Individual passenger oxygen masks
- Flight crew smoke masks
- Fire-extinguishing system in baggage compartments and engines
- Emergency escape provisions
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Tank System
