Payload
Payload is the weight of occupants, cargo, and baggage,
Flight Deck
A cockpit area, usually near the front of an aircraft from which a pilot controls the aircraft.
LOPA
Layout of Passenger Accommodations
DGCA
Directorate General of Civil Aviation
MCAS
Maneuvering
Characteristics
Augmentation
System
Empennage
an arrangement of stabilizer, Rudder & elevator at the tail of an aircraft.
Aircraft Control Surfaces
- Slats
- Ailerons
- Spoilers
- Flaps
- Rudders
- Elevators
- Stabilizer
Refer PPT for more details…
Aerospace Authority
Federal Aviation Administration
International Military Airworthiness Authorities
One A350 Cost
300 million Dollar
26,000 Crores
Boeing Aircraft Cost
737-9 => 120 million USD, 1000 Crores
737-10 => 350 million USD, 3000 Crores
777-9 => 450 million USD, 3500 Crores
VFSG & APU
Variable Frequency Starter Generators, Each Engine has two VFSG. Act as starter then Generator. Produce 235V AC and 250 KVA power.
APU Starter Generators.
Each ASG can power the 235V AC buses if necessary.
787 Basic
- Engine
- Fuselage Material
- Electrical Voltage
- GEnx-1B70 & RR Trent
- CFRP - Carbon Fiber Reinforced Plastic
- 235V AC, 115V AC, 28V DC
Wing Major Components
Aileron and Spoilers
Boeing A/C Equivalent to Airbus A/C
B787 vs A350
B737 vs A319, A320 and A321
B767 vs A330
B777 vs A330 and A350
Electrical Power System Distribution
- VFSG -> GCU -> ATRU -> 270VDC -> CMSC
- VFSG -> ATU -> 115VAC
- VFSG -> TRU -> 28VAC
ATRU & CMSC & TRU
Auto Transformer Rectifier & Common Motor Starter Controllers
The ATRUs convert the 235V AC to +/- 270V DC power that is used by the Common Motor Starter Controllers (CMSC). We have 04 CMSC and Its located in AFT Main E Bay. This high voltage DC used to run the massive Cabin Air Compressors, Engine and Hydraulic Pump.
The CMSCs use this power and change it into variable frequency AC power to run various motors and pumps on the airplane. The CMSCs also provide the starting power for the main engines and/or APU depending on airplane configuration.
Transformer Rectifier Units
The four TRUs change the 115V to 28V. This powers the traditional avionics, sensors and cockpit displays.
ATU
Auto transformer Units
The ATUs change the 235V AC power to 115V AC power, which supplies the left and right 115V AC buses. This is used for legacy items like galley inserts and standard outlets.
BPCU
Bus Power Control Units (BPCU) - 2qty provide the main control for the EPS. The command and control center of the entire grid. It manages the connection of external power and coordinates load shedding )automatically cutting power to non essential items like coffee makers if generator fails).
GCU
Generator Control Unit:
Brain of the generator. It regulates voltage, protects against over curret and manages the start vs generate modes.
Each VFSG and ASG has its own dedicated Generator Control Unit (GCU) that provides control and protection for its associated generator.
Power to individual components is distributed through any one of these
ELCC: Electrical Load Control Contractors
SPDU: Secondary Power Distribution Units
RPDU: Remote Power Distribution Units
TCB: Thermal Circuit Breakers
CCR
Common Computing Resource
CBIC is accessed through the multi function displays (MFD) and maintenance personal can also access CBIC using the maintenance laptop on the ground.
CBIC & ESIC
Circuit Breaker Indication and Control Is a hosted software application in the Common Core System (CCS).
The Circuit Breaker Indication and Control (CBIC) pages provide control and indication for these components:
* Electronic Circuit Breakers (ECB)
* Flight Control (FC) ECBs
* Electrical Load Control
Contactors (ELCC).
Electrical System Indication and Control
The Electrical System Indication and Control (ESIC) pages provide an interface to control electrical system breakers or contactors that cannot be controlled using the Circuit Breaker Indication and Control (CBIC) function.
ESIC is used to control components
in these panels:
* P100 power distribution panel
* P200 power distribution panel
* P300 power distribution panel
* P400 power distribution panel.
CBIC & EISI can access through MFD / ML.
Location of the components:
1. 115V AC Bus
2. ATU
3. VFSG Power Panel
4. APU Power Panel
- P300 & P400
- P500 & P600
- P100, P200
- P150
RPDS
Remote Power Distribution System
There are 17 RPDU throughout the plane. They act as digital breaker boxes,, receiving commands via fiber optics to turns system on / off (specially Circuit Breaker).
