Getting to Grips with Aircraft Weight and Balance(33)

曝光台 注意防骗 网曝天猫店富美金盛家居专营店坑蒙拐骗欺诈消费者

If the inner tanks are empty, the CGCC transfers fuel from trim tank into the center tank in order to maintain fuel quantity in the center tank (500 to 1000 kg). This is done without any regards to the CG target.
The fuel used in aft transfers comes from the center tank or from the inner tanks if the center tank is empty. Forward transfers bring fuel from the trim tank to the center tank. No fuel can be transferred from the trim tank to the inner tanks.
In descent below FL 200, the CGCC orders a fast forward fuel transfer from the trim tank to the
center tank. This stops when one of the following conditions is met:
. the trim tank is empty
. the center tank is full
. the CG has reached the forward CG limit.
In order to protect the aft CG limit, an independent CG monitoring is performed by the FWC (Flight Warning Computer) based on THS position data. In case the CG is found too far aft, an ECAM warning is triggered and the CG target is shifted forward. The CG target is also moved forward in case of a manual forward transfer (for more than 10 seconds) and when FQI data accuracy is degraded.

C. LPC WEIGHT AND BALANCE SYSTEM

C. LESS PAPER IN THE COCKPIT WEIGHT AND BALANCE SYSTEM
1. GENERALITIES
The Less Paper in the Cockpit . Weight & Balance module is an interface designed for the pilot for use in the cockpit to compute the different weights and center of gravity (CG) positions of the aircraft and to check them against their operational limitations. The interface runs on a laptop equipped with Windows operating system.
The Less paper cockpit package is a more comprehensive package comprising of document consultation (FCOM and/or MEL) and of performance computation (Takeoff, Landing, Weight & Balance, Flight). Each module may be present or not depending on the operator‘s choice.
The user interface of the Less Paper in the Cockpit . Weight & Balance module (termed as LPCWBU in the following) uses the data exclusively defined by the administrator. Indeed, the LPCWB package is delivered as an empty shell and the administrator has to feed the LPCWB environment with the fleet‘s weight and balance data (aircraft main characteristics, fuel tanks data…) as well as the operational data (influence of passengers and cargo loading on the CG - operational envelopes). The administrator defines also the general layout and operations of the user interface as this latter is very flexible and can be adapted to the airline's type of operations. To complete these tasks, the administrator uses the dedicated functions of the administrator interface namely LPCA and in addition can optionally use comprehensive data files produced the LTS software.
With the LPCWBU interface, pilots define the configuration of the flight, load the aircraft with passengers, cargo and fuel and distribute the payload in the cabin and in the holds. Various checks are performed throughout the data entry process and at the end, pilot gets results graphically and numerically.
　
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：Getting to Grips with Aircraft Weight and Balance(33)