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A project supported by AIRBUS and the CAAC Date of the module ? Table of contents ? Flight operations duties ? European Applicable Regulation ? General ? General aircraft limitations ? Payload Range ? Operating limitations ? In flight performance ? One engine inoperative performance ? Flight planning ? Weight and Balance A project supported by AIRBUS and the CAAC Date of the module BALANCE : ? 1. Limits ? 2. Expression ? 3. Calculation ? 4. The Index method ? 5. Operational limits ? 6. Balance and fuel consumption JAR OPS 1 Sub-part J A project supported by AIRBUS and the CAAC Date of the module CG mg Forward limit manoeuvrability Aft limit stability ? Certified limits : A project supported by AIRBUS and the CAAC Date of the module BALANCE : ? 1. Limits ? 2. Expression ? 3. Calculation ? 4. The Index method ? 5. Operational limits ? 6. Balance and fuel consumption JAR OPS 1 Sub-part J A project supported by AIRBUS and the CAAC Date of the module Origin chosen by the manufacturer O MAC ? Balance is expressed in percent of MAC ?MAC : Mean Aerodynamic Chord A project supported by AIRBUS and the CAAC Date of the module O a l CG ? Characteristics of the MAC ? its length : l ? the station of its leading edge : a A project supported by AIRBUS and the CAAC Date of the module X 2.540 m a = 17.8015 m l = 4.1935 m O Z ? Example : A project supported by AIRBUS and the CAAC Date of the module O a l mg CG d B% = 100 d - a l ? Balance is expressed in percent of MAC : A project supported by AIRBUS and the CAAC Date of the module x a = 17.8015 m l = 4.1935 m d = 18.800 m B% = 100 d - a l 2.540 m B% = 23.8% ? Example : A project supported by AIRBUS and the CAAC Date of the module BALANCE : ? 1. Limits ? 2. Expression ? 3. Calculation ? 4. The Index method ? 5. Operational limits ? 6. Balance and fuel consumption JAR OPS 1 Sub-part J A project supported by AIRBUS and the CAAC Date of the module O mg CG d m1g d1 m2g d2 mig di mgd = mbgdb +m1gd1 +..........migdi+ .....mngdn m = mb + m1 + ...... + mi + .......mn mbg db A project supported by AIRBUS and the CAAC Date of the module C% = 100 ? midi m - a l mgd = mbgdb +m1gd1 +..........migdi+ .....mngdn m = mb + m1 + ...... + mi + .......mn d = ? midi m A project supported by AIRBUS and the CAAC Date of the module BALANCE : ? 1. Limits ? 2. Expression ? 3. Calculation ? 4. The Index method ? 5. Operational limits ? 6. Balance and fuel consumption JAR OPS 1 Sub-part J A project supported by AIRBUS and the CAAC Date of the module ? Index = moment ? with a new origin O' (D : station of O') ? mg (d-D) I = A +mg B (d - D) A & B constant O' D O CG d corrected in order to obtain a number between 0 and 100 : A project supported by AIRBUS and the CAAC Date of the module ? Example : ? A320 : D = 19 m A = 40 B = 1000g O O' D CG d I = 40 + m 1000(d - 19) Weighing ? OEM = 39400 kg d = 18.8 m OEM Index = 32.1 A project supported by AIRBUS and the CAAC Date of the module The aeroplane is divided in several zones : cargo compartments; pax compartments; fuel tanks... For each zone, a given mass mi (10 pax or 1000 kg) located at di (CG of this zone) produces a variation of Index ?Ii. ? OEM Index calculation : from the weighing of the aeroplane TOM Index calculation : algebraic sum of the OEM Index and the ?Index due to the loading of the aeroplane : A project supported by AIRBUS and the CAAC Date of the module Any mass located into a zone ahead of O' produces a negative ?I Any mass located into a zone behind O' produces a positive ?I www.aero.cn 航空翻譯 www.aviation.cn 本文鏈接地址：flight operation 飛行運行概述
