IP21 SIMULATION RESULT BY DARP FOR KSFO/KLAX(IPACG/40)

ENRI

Background

DARP trial which has been carried out since August 22, 2013 brings some benefits.

At IPACG 38 and 39, ANA reported outcome from DARP trial of the arrival flight from PHNL/KLAX to RJTT/RJAA.

However, the number of flight applies DARP is not so many.

ENRI simulated the situation which almost flight tries DARP in the future for eastbound traffic.

Simulation about DARP

Weather Forecast

(before 6hours)

Flight Plan Data

Weather (Observed)

New DARP Route

DARP calculatio

n

Benefit ?

OriginalFlight Plan

Route

NoYes

Simulation

Scenario

ATC simulation(To keep ATC separation,

Altitude often changed)

TrajectoryFlight TimeFuel Consumption

TrajectoryFlight TimeFuel Consumption

Compare !

Scenario ConstitutionScenario A Scenario B

Traffic type

SummerOptimum Route is similar to Great Circle.

WinterOptimum Route for KSFO/KLAX/PHNL is closely.

Flights 91 85

RNP4 74 flights (81%) 73 flights (86%)

Objected flight

36 (bound for KSFO or KLAX) 51(bound for KSFO, KLAX or PHNL)

Flight plan route

Additional Evaluation (about Route filling)

Flight Plan change

EMRON TRK14

KALNA TRK3

A590 TRK1R591 TRK2

UPR started from ADGOR →TRK2

UPR started from KALNA (not G344) →TRK3

UPR started from KALNA (G344) →G334

Ｏｒｉｇｉｎａｌ

ＤＡＲＰ２

ＤＡＲＰ 1

ＴｉｍｅＦｕｅｌ

DARP Benefit (1/2)

020040060080010001200140016001800

0:00

0:03

0:06

0:09

150E(Calc) 150E(SIM) 160E(Calc) 160E(SIM)

Fuel

con

sum

ption

(lbs

)

Flig

ht ti

me

A Fuel B Fuel A Time B Time

Calc: Calculated DARP (Weather Forecast)SIM: Simulated (Observed Weather)

DARP　@150E>@160E

Scenario A　 SIM<Calc @150E　 SIM>Calc @160E

↑traffic congestion

Scenario B　 Big improve !

↑traffic congestion

↑ ↑ weathercondition

DARP Benefit (2/2)020040060080010001200140016001800

0:00

0:03

0:06

0:09

150E(Calc) 150E(SIM) 160E(Calc) 160E(SIM)

Fuel

con

sum

ption

(lbs

)

Flig

ht ti

me

A Fuel B Fuel A Time B Time

Calc: Calculated DARP (Weather Forecast)SIM: Simulated (Observed Weather)

020040060080010001200140016001800

0:00

0:03

0:06

0:09

150E(Calc) 150E(SIM) 160E(Calc) 160E(SIM)

Fuel

con

sum

ption

(lbs

)

Flig

ht ti

me

A(UPR) Fuel A(TRK) Fuel A(UPR) Time A(TRK) Time

Traffic Congestion(Scenario　B)

DARP at 150E

DARP at 160E

Red lines are bound for KLAX.

Traffic Congestion(ScenarioB)

0 10 20 30 40

34E6035E6036E6037E6038E60

flights

DARP_160EDARP_150EORG

0 10 20 30 40

33E7034E7035E7036E7037E70

flights

DARP_160EDARP_150EORG

DARP_160EORG　 no for PHNLDARP_150E including for PHNL

ORG for KSFO/KLAX for PHNL

DARP_150E mixed for PHNL

29000

33000

37000

41000

130 160 190 220 250

30

35

40

45

50

55

130 150 170 190 210 230 250

UPRnoDARP UPR_150E UPR_160E

130E 150E 170E 170W 150W 130W 110W

Sample Flight（ Scenario A)

KALNA

47E70

Sample Flight(Scenario A)

30354045505560

130 160 190 220 250

UPRnoDARP UPR_150E UPR_160E

130E 160E 170W 140W 110W

198000

198500

199000

199500

UPRnoDARP UPR_150E UPR_160EFuel

Con

sum

ptio

n (lb

s)

KALNA

47E70

Sample Flight (Scenario B)

29000

33000

37000

41000

130 160 190 220 250

NoDARP DARP150E DARP160E

130E 150E 170W 140W 110W

Conclusion

DARP makes many benefits. at 150E: larger benefit, but sometimes

traffic concentration occurs.→　 low altitude

at 160E: smaller benefit, ATC operation is good.

Some flights assigned low altitude. DARP from UPR DARP from TRK

when: same Gatefix and closely location TRK & UPR