Applied Cartesian Tensors for Aerospace Simulation

Appendix C: Integral Lists for Computer Simulation Algorithms

In this appendix integral lists are presented that are used for the numerical solution of many aerospace problems. Computer algorithms have been developed, as those described in Appendix D, using first-order solutions for the differential equations of motion. These solutions can be generalized using an array of state parameters, y 1, y 2, y 3, ..., y n, and an array of their first derivatives, 1, 2, 3, , n. The numerical solution is characterized by the stepwise integral:


This integral is performed in ? t steps until the end boundary condition is reached, for example, until the state parameter achieves a desired value or until the stop time is reached. The following integral lists refer to the indicated solutions of Eq. (C.1).

C.1 Three-DOF Motion Simulation

Position State

1.

x 1

1

2.

x 2

2

3.

x 3

3

Velocity State

Acceleration from EOM

4.

1

1

5.

2

2

6.

3

3

C.2 Four-DOF Airframe Motion Simulation

Position State

1.

x 1

1

2.

x 2

2

3.

x 3

3

Velocity State

Acceleration from EOM

4.

1

1

5.

2

2

6.

3

3

Pitch Attitude

7.

?

Pitch Rate

Pitch Acceleration from EOM

8.

Vehicle Weight

Weight Flow Rate

9.

W

C.3 Six-DOF...

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