- Off-line simulation:
a. Trim Business Jet C510 model at steady-state level flight using Matlab model of the aircraft developed in ENGA2003 at:
i. V=80 m/s, H=2000 m
ii. V=160 m/s, H=2000 m
b. Using the results obtained in previous step, prepare files with initial conditions (Trim_2k80.m and Trim_2k160.m) for the Simulink model of the same aircraft.
c. Prepare control inputs in the format required for the Simulink model (see ControlInput_00.m) for the following cases:
i. All controls are frozen at the position for trim in SSLF.
ii. Control input to excite “Short-period” mode.
iii. Control input to excite “Phugoid” mode.
iv. Control input to excite “Dutch-roll” mode.
v. Control input to excite “Roll subsidence” mode.
vi. Control input to excite spiral mode.
vii. Ascending flight.
viii. Descending flight.
Note:
- The corresponding control input time histories developed in ENGA2003 Business Jet Matlab model may be used but have to be converted into the Simulink model format.
- For the higher speed flight the control deflections have to be reduced several times to avoid overreaction of the aircraft and failing simulation process.
d. Simulate flights starting from each of the trim state (Trim_2k80.m and Trim_2k160.m) with the following control inputs prepared in previous step.
- Design (use the method studied in ENGA2003) and add yaw damper to the Simulink model of the Business Jet and demonstrate its effect by off-line simulation.
- Add simulation of the delay of the turbo fan engine thrust change in response to thrust lever control repositioning and demonstrate its effect by off-line simulation.
- Add at least one of the autopilots described in Sections 4.7-4.10 of David Allerton, PRINCIPLES OF FLIGHT SIMULATION, edition 2009 textbook. Demonstrate its work by off-line simulation.
- Add a block to the Simulink model of the Business Jet which will allow taking into account shift of the center of gravity of an aircraft. Demonstrate the effect by trimming the Business Jet at the same V and H but with different CG (few per cents of MAC forward and aft). Describe the effect.