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The Research of One Engine Inoperation for RNP. Presented by Wang Zhong. Content. Introduction The Criterion for EOSID RNP1’s EOSID Conclusions. Introduction. CAAC ’s PBN Roadmap Near term(2009-2012) 30% airports have the ability of PBN operations Medium term (2013-2016)
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The Research of One Engine Inoperation for RNP Presented by Wang Zhong
Content • Introduction • The Criterion for EOSID • RNP1’s EOSID • Conclusions
Introduction • CAAC ’s PBN Roadmap • Near term(2009-2012) 30% airports have the ability of PBN operations • Medium term (2013-2016) All transport airports have the ability of PBN operations • long term (2017-2025) • Present situation • Total airports 196 • RNAV 23 • RNP APCH 59 • RNP AR 15
AC & Regulations • Notice for designing the departure procedure of one engine inoperation (AC-FS-2000-2)
Criterion for EOSID • Conventional Procedure • RNP AR procedures
Conventional Protection Area • Departure Splay Area • EU-OPS • Heading change<15°600m • Heading change>15°900m 900m D’ 900+0.25D’ D 45° 900+0.125D 90m 900m 12.5% 900m Initial protection area of departure Procedure turning protection area
RNP AR Protection Area 2xRNP RNP-AR 0.31111m 2xRNP 90m 2xRNP 12.5% RF leg protection area
RNP1 EOSID Protection Area Procedure turning area constructing model Out boundary not constant RNP 1 1111m Fly-over Fly-by
RNP1 EOSID Turning Area Constructing • Fly-over waypoint • The earliest turning point =-ATT • The latest turning point= ATT+c • Fly-by waypoint • The earliest turning point =-ATT+ R*tan(A/2) • The latest turning point= ATT+c- R*tan(A/2) • ATT=0.8*XTT
RNP1 EOSID Wind Model Key point: Turning area changed by the wind factor Wind: ICAO wind: 30kt RNP1 reference Doc 9905 Consider the worse wind condition
Example: Above the airport: 2000ft Instrument Air Speed : 205 kt. Bank angle : 15° Wind spiral radius RNP1>ICAO
EOSID DX402 RNP 1 SID DX801 14
EOSID Validation • Simulator Validation • B737-700(22k) • Max weight, max temperature • Max weight, max temperature, max crosswind. • Min weight, min temperature, max crosswind. • Min weight, min temperature, max headwind. • Max weight, min temperature, max tailwind • Flight Validation
Conclusions • No specification or advisory circular about the RNP 1 on EOSID in China • New wind model and RNP APCH turning construction model • Simulator and flight validation prove the effectiveness