Incidence, Sideslip, & Airspeed

Calculate incidence, sideslip, and airspeed

• Library:
• Aerospace Blockset / Flight Parameters

• Description

The Incidence, Sideslip, & Airspeed block calculates the angles between the velocity vector and the body, and also the total airspeed from the velocity components in the body-fixed coordinate frame. For the equations used in the calculation, see Algorithms.

Ports

Input

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Velocity of the body, specified as a three-element vector, resolved into the body-fixed coordinate frame.

Data Types: double

Output

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Incidence angle, returned as a scalar, in radians.

Data Types: double

Sideslip angle, returned as a scalar, in radians.

Data Types: double

Airspeed of the body, returned as a scalar.

Data Types: double

Algorithms

To calculate the angles between the velocity vector and the body, and the total airspeed, the block uses these equations:

$\alpha =a\mathrm{tan}\left(\frac{w}{u}\right)$

$\beta =a\mathrm{sin}\left(\frac{v}{V}\right)$

$V=\sqrt{{u}^{2}+{v}^{2}+{w}^{2}}$ Extended Capabilities

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