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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
Special Airports
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
45°
900m
900m
900+0.25D’
D’
D
900+0.125D
90m
12.5%
900m
Initial protection area of departure Procedure turning protection area
Departure Splay AreaEU-OPS
Heading change<15°600mHeading change>15°900m
RNP AR Protection Area
90m
12.5%
2xR
NP
2xR
NP
RF leg protection area
2xRNP
RNP-AR 0.31111m
RNP1 EOSID Protection Area
The earlist turning point
The latest turning point
30°
0.3NM
0.3NM
The latest turning point
The latest turning point
30°
A/2
0.3NM
0.3NM
Fly-over Fly-by
Procedure turning area constructing modelOut boundary not constant
RNP 1 1111m
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
53.280082.0 heightvwind
Key point:
Turning area changed by the wind factor
Wind:
ICAO wind: 30kt
RNP1 reference Doc 9905
Consider the worse wind condition
Turning Degree
Wind model
15° 30° 45° 60° 75° 90° 105° 120°
ICAO wind 160991666
61723
31780
01836
71893
41950
120068
RNP1 wind 163741721
71806
01890
21974
52058
82143
022273
Example:
Above the airport: 2000ft
Instrument Air Speed : 205 kt.
Bank angle : 15°
Wind spiral radiusRNP1>ICAO
Dazhou airport , southwest of china
14
EOSIDEOSID
RNP 1 SIDRNP 1 SID
DX80DX8011
DX40DX4022
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
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