Class PbnRnpAr

Class object for PBN RNP AR procedure type calculations (ICAO and FAA)

Inheritance

object

BaseObjectPbn

PbnRnpAr

Inherited Members

BaseObjectPbn._Criteria

BaseObjectPbn.IsFaa()

BaseObjectPbn.IsIcao()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: FpAssistantCore.Pbn

Assembly: FpAssistantCoreScl.dll

Syntax

public class PbnRnpAr : BaseObjectPbn

Constructors

PbnRnpAr(Criteria)

Constructor

Declaration

public PbnRnpAr(Criteria criteria)

Parameters

Type	Name	Description
Criteria	criteria	Choice of ICAO PANS-OPS or FAA TERPS

Remarks

Used where the criteria calculations differ between the criteria. ICAO to default to SI and FAA to Non-SI units

Properties

ATIS

Automatic Terminal Information System (ATIS)

Declaration

public LinearDistance ATIS { get; }

Property Value

Type	Description
LinearDistance

Remarks

ICAO: Fixed at 6 metres | FAA: Fixed at 20 Feet

Act

Average Coldest Temperature (ACT)

Declaration

public Temperature Act { get; set; }

Property Value

Type	Description
Temperature	double

CriteriaUnit

Unit to perform base calculations in

Declaration

public CriteriaUnits CriteriaUnit { get; set; }

Property Value

Type	Description
CriteriaUnits	Current unit

Remarks

ICAO allows for SI and Non-SI whereas FAA only imperial units

DeltaIsaHigh

Delta ISA high

Declaration

public Temperature DeltaIsaHigh { get; }

Property Value

Type	Description
Temperature	double

DeltaIsaLow

Delta ISA low

Declaration

public Temperature DeltaIsaLow { get; }

Property Value

Type	Description
Temperature	double

DistanceFapToLtp

Distance (D) from FAP to LTP

Declaration

public LinearDistance DistanceFapToLtp { get; }

Property Value

Type	Description
LinearDistance	Distance (D) from FAP to LTP

FTE

Flight Technical Error (FTE)

Declaration

public LinearDistance FTE { get; }

Property Value

Type	Description
LinearDistance

Remarks

ICAO:Fixed at 23 metres | FAA: Fixed at 75 Feet

Fap

Final Approach Point (FAP) Graphical Coordinate

Declaration

public GeoCoordinate Fap { get; set; }

Property Value

Type	Description
GeoCoordinate	Coordinate of the FAP

FapAltitude

FAP Altitude (a)

Declaration

public Altitude FapAltitude { get; set; }

Property Value

Type	Description
Altitude	Altitude at the FAP

Remarks

Minimum intermediate segment altitude

IsaTemperatureLtp

ISA Temperature at LTP elevation

Declaration

public Temperature IsaTemperatureLtp { get; }

Property Value

Type	Description
Temperature	double - Temperature

LtpElevation

LTP Elevation (b)

Declaration

public LinearDistance LtpElevation { get; set; }

Property Value

Type	Description
LinearDistance	Elevation of the Landing Threshold Point

Remarks

Mean Sea Level elevation of the LTP

LtpFtp

LTP/FTP Graphical Coordinate

Declaration

public GeoCoordinate LtpFtp { get; set; }

Property Value

Type	Description
GeoCoordinate	Coordinate of the LTP/FTP

NaAbove

NA Above

Declaration

public Temperature NaAbove { get; }

Property Value

Type	Description
Temperature	double

NaBelow

NA Below - Published low temperature limitation

Declaration

public Temperature NaBelow { get; }

Property Value

Type	Description
Temperature	double

RNP

Required Navigation Performance (RNP)

Declaration

public LinearDistance RNP { get; }

Property Value

Type	Description
LinearDistance

Remarks

Fixed at 0.14 NM

Rdh

Reference Datum Height (RDH)

Declaration

public LinearDistance Rdh { get; set; }

Property Value

Type	Description
LinearDistance	Distance of the RDH

TrueRunwayBearingTrueCourse

True Runway Bearing or True Course

Declaration

public CompassBearing TrueRunwayBearingTrueCourse { get; set; }

Property Value

Type	Description
CompassBearing

Vpa

Vertical Path Angle (VPA)

Declaration

public Angle Vpa { get; set; }

Property Value

Type	Description
Angle	Angle of the VPA

VpaMaximum

Maximum Vertical Path Angle (VPA)

Declaration

public Angle VpaMaximum { get; set; }

Property Value

Type	Description
Angle	Angle of the VPA Maximum

Remarks

Used: VPA Temperature Limits Calculations

VpaMinimum

Minimum Vertical Path Angle (VPA)

Declaration

public Angle VpaMinimum { get; }

Property Value

Type	Description
Angle	Angle of the VPA Minimum

Remarks

Used: VPA Temperature Limits Calculations

Methods

AnpeCalculation(Angle)

Actual Navigation Performance Error (ANPE) calculation

Declaration

public LinearDistance AnpeCalculation(Angle vpa)

Parameters

Type	Name	Description
Angle	vpa	Vertical Path Angle (VPA)

Returns

Type	Description
LinearDistance	ANPE value : Linear Distance

Remarks

An aircraft is expected to be within a radius equal to the required navigation performance (RNP) for the leg 95% of the time. This additive accounts for the 5th percentile that may be operating outside of RNP

AseCalculation(LinearDistance)

Altimetry System Error (ASE) calculation

Declaration

public LinearDistance AseCalculation(LinearDistance elevation)

Parameters

Type	Name	Description
LinearDistance	elevation	Elevation

Returns

Type	Description
LinearDistance	ASE value : Linear Distance

Remarks

Difference between the pressure altitude displayed to the pilot when referencing ISA and the free stream pressure altitude

BodyGeometryErrorCalculation(PbnPathTypes, Angle)

Body Geometry error (BG) calculation

Declaration

public LinearDistance BodyGeometryErrorCalculation(BaseObjectPbn.PbnPathTypes pbnPathType, Angle bankAngle)

Parameters

Type	Name	Description
BaseObjectPbn.PbnPathTypes	pbnPathType
Angle	bankAngle

Returns

Type	Description
LinearDistance

Remarks

Low point of the aircraft below the altimeter reference point. This may be the landing gear for aircraft on straight legs, but it could be a wing tip for aircraft on RF legs

MocVebCalculation(LinearDistance, LinearDistance, LinearDistance, LinearDistance, LinearDistance, LinearDistance, LinearDistance, LinearDistance)

ICAO MOC/FAA VEB Calculation

Declaration

public LinearDistance MocVebCalculation(LinearDistance bg, LinearDistance isad, LinearDistance anpe, LinearDistance wpr, LinearDistance fte, LinearDistance ase, LinearDistance vae, LinearDistance atis)

Parameters

Type	Name	Description
LinearDistance	bg	Body Geometry (BG)
LinearDistance	isad	International Standard Atmosphere Temperature Deviation (ISAD)
LinearDistance	anpe	Actual navigation performance error (ANPE)
LinearDistance	wpr	Waypoint precision error (WPR)
LinearDistance	fte	Flight technical error (FTE)
LinearDistance	ase	Actual navigation performance error (ANPE)
LinearDistance	vae	Vertical angle error (VAE)
LinearDistance	atis	Automatic terminal information system (ATIS)

Returns

Type	Description
LinearDistance	MOC/VEB value : LinearDistance

Remarks

ICAO: Minimum Obstacle Clearance (MOC) | FAA: Vertical Error Budget (VEB)

OasGradientCalculation(Altitude, LinearDistance, LinearDistance, LinearDistance, Angle)

Obstacle Assessment Surface (OAS) gradient/ VEB OCS slope calculation

Declaration

public double OasGradientCalculation(Altitude fapAltitude, LinearDistance ltpElevation, LinearDistance mocFap, LinearDistance moc75250, Angle vpa)

Parameters

Type	Name	Description
Altitude	fapAltitude	Altitude at FAP
LinearDistance	ltpElevation	Elevation at LTP
LinearDistance	mocFap	Minimum Obstacle Clearance (MOC) at FAP
LinearDistance	moc75250	Minimum Obstacle Clearance (MOC) 75m or 250ft
Angle	vpa	Vertical Path Angle (VPA)

Returns

Type	Description
double

OasLtpOriginDistanceCalculationIcao(LinearDistance, LinearDistance, double, Angle)

ICAO: OAS LTP / FAA: OCS LTP/FTP (dVEB) - Origin distance calculation

Declaration

public LinearDistance OasLtpOriginDistanceCalculationIcao(LinearDistance rdh, LinearDistance moc75250, double oasGradient, Angle vpa)

Parameters

Type	Name	Description
LinearDistance	rdh	Reference Datum Height (RDH)
LinearDistance	moc75250	Minimum Obstacle Clearance (MOC) 75m or 250ft
double	oasGradient	OAS Gradient
Angle	vpa	Vertical Path Angle (VPA)

Returns

Type	Description
LinearDistance

SetCriteriaUnit(CriteriaUnits)

Change calculation units for RNP AR criteria

Declaration

public void SetCriteriaUnit(CriteriaUnits criteriaUnits)

Parameters

Type	Name	Description
CriteriaUnits	criteriaUnits	Units to perform calculations in

Remarks

FAA can only be Non-SI but ICAO both units

Exceptions

Type	Condition
Exception	Trying to set SI for FAA PBN RNP AR criteria

VaeCalculation(LinearDistance, LinearDistance, Angle)

Vertical Angle Error (VAE) calculation

Declaration

public LinearDistance VaeCalculation(LinearDistance elevation, LinearDistance ltpElevation, Angle vpa)

Parameters

Type	Name	Description
LinearDistance	elevation	Elevation
LinearDistance	ltpElevation	Elevation at LTP
Angle	vpa	Vertical Path Angle (VPA)

Returns

Type	Description
LinearDistance	VAE value : Linear Distance

Remarks

Ability of the FMS to determine incremental height above the reference point using distance and intended flight path angle

WprCalculation(Angle)

Waypoint Precision error (WPR) calculation

Declaration

public LinearDistance WprCalculation(Angle vpa)

Parameters

Type	Name	Description
Angle	vpa	Vertical Path Angle (VPA)

Returns

Type	Description
LinearDistance	WPR value : Linear Distance

Remarks

Horizontal position error associated with the coordinate resolution stored in the database and Flight Management System (FMS) computational accuracy