A340AM
7th Jun 2010, 07:29
Hey guys can u please answer these questions below , im really confused!!!!
1) Give the three different kinds of dampers and explain in detail their purpose and in which channels they act. Give block diagrams of the closed loop structures and explain all blocks in the diagram. Give also transfer functions where possible and explain them.
2) Explain in depth how a heading angle hold mode works in an aircraft. Your description should include at least the following topics enumerated below.
• Explain the purpose of a heading angle hold mode and describe which type of control device (surface) and type of feedback loop structure (sensor) are needed.
3) How can the heading angle be calculated from the roll angle? For this purpose, consider an aircraft in a flat turn with constant turn radius Rt and determine the equations of motion.
4) 4. Describe the glideslope hold mode of a general autopilot in detail. Your description should include at least the following topics enumerated below.
• A clear picture of the situation in which the to-be-controlled parameter can be found.
• Assumptions which are made in this figure.
• A procedure which shows clearly how the control law is determined.
• A block diagram which represents the control law determined earlier.
• An explanation of the nature of each block in the diagram, and definitions of models or transfer functions of all these blocks.
After you described the glideslope hold mode in detail, explain the influence of the slant range R on the closed loop performance. Give three ways how this can be compensated.
please please , help me with these questions !!!
thank you
1) Give the three different kinds of dampers and explain in detail their purpose and in which channels they act. Give block diagrams of the closed loop structures and explain all blocks in the diagram. Give also transfer functions where possible and explain them.
2) Explain in depth how a heading angle hold mode works in an aircraft. Your description should include at least the following topics enumerated below.
• Explain the purpose of a heading angle hold mode and describe which type of control device (surface) and type of feedback loop structure (sensor) are needed.
3) How can the heading angle be calculated from the roll angle? For this purpose, consider an aircraft in a flat turn with constant turn radius Rt and determine the equations of motion.
4) 4. Describe the glideslope hold mode of a general autopilot in detail. Your description should include at least the following topics enumerated below.
• A clear picture of the situation in which the to-be-controlled parameter can be found.
• Assumptions which are made in this figure.
• A procedure which shows clearly how the control law is determined.
• A block diagram which represents the control law determined earlier.
• An explanation of the nature of each block in the diagram, and definitions of models or transfer functions of all these blocks.
After you described the glideslope hold mode in detail, explain the influence of the slant range R on the closed loop performance. Give three ways how this can be compensated.
please please , help me with these questions !!!
thank you