AERO 371 – Modelling and Control Systems - 1/3 - Quiz #1, 11:45 – 12:35, Feb. 16, 2026
CONCORDIA UNIVERSITY
GINA CODY SCHOOL OF ENGINEERING AND COMPUTER SCIENCE
DEPARTMENT OF MECHANICAL, INDUSTRIAL AND AEROSPACE ENGINEERING
AERO 371 – Modelling and Control Systems
Quiz #1 Instructor: Youmin Zhang Date: Feb. 16, 2026
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Answer all two (2) questions. Time: 11:45 - 12:35 Location: H 421
Please put your name and ID number in all pages.
For all questions:
Justify clearly all your steps.
Clearly show all equations and mathematical steps.
Answers without mathematical steps and/or justifications will be given a mark of zero.
Good Luck !
Problem 1 [10 marks]
As showed in Fig. 1 for an airplane configuration and its marked control surfaces, in Fig. 2 for a general
structure of control systems, and in Fig. 3 the general Equations of Motion (EoM) for an airplane, please
answer following questions:
Fig. 1 An airplane configuration and its control surfaces
Fig. 2 General structure of Control Systems
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, AERO 371 – Modelling and Control Systems - 2/3 - Quiz #1, 11:45 – 12:35, Feb. 16, 2026
Fig. 3 General Equations of Motion (EoM) of an airplane
1) Please list the airplane components in Fig. 1 for flight control (manually and automatically) purpose;
Answer: Ailerons, Elevators, Rudders, Flaps, Spoilers, Slates, and Trimmable Horizontal Stabilizer
2) Which block in Fig. 2 should represent the airplane flight control components you listed in 1)?
Answer: “Actuators” block
3) Which block in Fig. 2 should represent the EoM presented in Fig. 3?
Answer: “System” block
4) For a control system as showed in Fig. 2, what are the “Control System Components in Terms of
Function inside the Block Diagram” as shown in the lecture slides of page 38 in Lecture #1?
Answer: 1) System, plant or process (to be controlled)
2) Actuators (converts the control signal to a power signal)
3) Sensors (provides measurement of the system output)
4) Reference input (represents the desired output)
5) Error detection (forms the control error)
6) Controller
5) Explain the following concept/terminology
a) modelling;
Answer: Development of a mathematical representation for a physical system.
______________________________________________________________________________
CONCORDIA UNIVERSITY
GINA CODY SCHOOL OF ENGINEERING AND COMPUTER SCIENCE
DEPARTMENT OF MECHANICAL, INDUSTRIAL AND AEROSPACE ENGINEERING
AERO 371 – Modelling and Control Systems
Quiz #1 Instructor: Youmin Zhang Date: Feb. 16, 2026
____________________________________________________________________________________
Answer all two (2) questions. Time: 11:45 - 12:35 Location: H 421
Please put your name and ID number in all pages.
For all questions:
Justify clearly all your steps.
Clearly show all equations and mathematical steps.
Answers without mathematical steps and/or justifications will be given a mark of zero.
Good Luck !
Problem 1 [10 marks]
As showed in Fig. 1 for an airplane configuration and its marked control surfaces, in Fig. 2 for a general
structure of control systems, and in Fig. 3 the general Equations of Motion (EoM) for an airplane, please
answer following questions:
Fig. 1 An airplane configuration and its control surfaces
Fig. 2 General structure of Control Systems
______________________________________________________________________________
, AERO 371 – Modelling and Control Systems - 2/3 - Quiz #1, 11:45 – 12:35, Feb. 16, 2026
Fig. 3 General Equations of Motion (EoM) of an airplane
1) Please list the airplane components in Fig. 1 for flight control (manually and automatically) purpose;
Answer: Ailerons, Elevators, Rudders, Flaps, Spoilers, Slates, and Trimmable Horizontal Stabilizer
2) Which block in Fig. 2 should represent the airplane flight control components you listed in 1)?
Answer: “Actuators” block
3) Which block in Fig. 2 should represent the EoM presented in Fig. 3?
Answer: “System” block
4) For a control system as showed in Fig. 2, what are the “Control System Components in Terms of
Function inside the Block Diagram” as shown in the lecture slides of page 38 in Lecture #1?
Answer: 1) System, plant or process (to be controlled)
2) Actuators (converts the control signal to a power signal)
3) Sensors (provides measurement of the system output)
4) Reference input (represents the desired output)
5) Error detection (forms the control error)
6) Controller
5) Explain the following concept/terminology
a) modelling;
Answer: Development of a mathematical representation for a physical system.
______________________________________________________________________________
