WOLFRAM SYSTEM MODELER

FlightData

Global flight data variables (measured at the aircraft center of mass location)

Wolfram Language

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SystemModel["Aircraft.Physical.FixedWing.Interfaces.FlightData"]
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Information

This record contains the global flight data variables measured at the aircraft center of mass location. The variables are divided into the following categories:

Mass and Forces

This category contains the total mass (mTot) and inertia tensor (Ixx, Iyy, Izz, Ixy, Ixz, Iyz) such that the contribution from the variable mass properties of the fuel tank (for aircraft with combustion engines) is also included. The loadFactor is the total lift force divided by the gravitational force, and thus it is analogous to the G-force along the body z axis. 

Position and Orientation

This category contains the aircraft position in the world frame (positionAC), its orientation in Euler angles (phi, theta, psi), angle of attack (alpha), sideslip angle (beta), track angle (track) and flight path angle (gamma). Additionally, it contains a dedicated variable for altitude (alt), which actually equals -positionAC[3].

Velocities

The aircraft velocity is resolved in two frames of reference, namely in the world frame (vWorld) and the aircraft body frame (vBody), which are also shown in Figure 1. The total velocity (vTot) is the magnitude of the aircraft velocity vector. Additionally, this category contains the aircraft Mach number (mach) and ground speed (vGround), which is the velocity of the aircraft projected on the world x-y plane.

Figure 1: World frame and body frame.

Atmospheric Properties

This category contains the pressure (pAlt), static temperature (Talt), air density (rhoAlt), speed of sound (aAlt) and dynamic viscosity (muAlt) at the flight altitude as well as the dynamic pressure (qAC).

Used in Components (10)

EngineBase

Aircraft.Physical.FixedWing.Parts.Propulsions.Engines.Interfaces

Interface for engines

EnergySystemBase

Aircraft.Physical.FixedWing.Parts.Propulsions.EnergySystems.Interfaces

Interface for energy system (currently only calculates consumption)

PropulsionBase

Aircraft.Physical.FixedWing.Parts.Propulsions.Interfaces

Interface for propulsion models

Conventional

Aircraft.Physical.FixedWing.Parts.ControlSurfaces

Model of system of surfaces in conventional wing configuration

WingBody

Aircraft.Physical.FixedWing.Parts.ControlSurfaces.Components

Contribution from wing-body combination to aerodynamic forces

HorizontalTail

Aircraft.Physical.FixedWing.Parts.ControlSurfaces.Components

Contribution from horizontal tail to aerodynamic forces

VerticalTail

Aircraft.Physical.FixedWing.Parts.ControlSurfaces.Components

Contribution from vertical tail to aerodynamic forces

Ailerons

Aircraft.Physical.FixedWing.Parts.ControlSurfaces.Components

Contribution from ailerons to aerodynamic forces

Body

Aircraft.Physical.FixedWing.Parts.Bodies

Model for the mass properties of entire aircraft or only fuselage, landing gear and payload if weight estimation method is used

AircraftBase

Aircraft.Physical.FixedWing.Interfaces

Interface for a complete aircraft model