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Aircraft Conventional Tail Assembly

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Questions and Answers

What is the purpose of a taileron in a modern air-superiority fighter?

To move the horizontal stabilizer surfaces for pitch control

To reduce the rolling power under all conditions

To provide additional control in roll (correct)

To increase the stiffness requirement of the vertical fin

Why is it important to design for minimum horizontal tail size in a T-tail arrangement?

To minimize the fin stiffness requirement (correct)

To increase the mass of the horizontal stabilizer

To reduce the rolling force under all conditions

To increase the stiffness requirement of the vertical fin

What effect does stabilizer dihedral have on the flutter speed in a T-tail design?

It reduces the required fin stiffness for flutter reduction (correct)

It increases the stiffness requirement of the vertical fin

It increases the mass of the horizontal stabilizer

It has no effect on flutter speed

What is the role of the jack arm in the variable incidence jackscrew connected to the horizontal stabilizer?

To adjust the angle of incidence of the horizontal stabilizer Signup and view all the answers

What is the primary parameter for T-tail flutter?

The vertical fin torsional stiffness Signup and view all the answers

In large transport planes, how is the angle of attack of the stabilizer adjusted?

By means of an electrically driven or manually operated ball nut and jackscrew attached to the forward side of the center section Signup and view all the answers

What is the purpose of the rubber aerodynamic seal between the stabilizer sections and the aft fuselage?

To prevent moisture from entering the gaps Signup and view all the answers

Which aircraft features an all-moving tailplane as shown in Fig. 10.1.3?

Lockheed Jetstar Signup and view all the answers

What type of hinge joints are used for the stabilizer in large transport planes?

Self-aligning bushing type hinge joints Signup and view all the answers

Which aircraft used the all-movable horizontal stabilizer (flying tail) as shown in Fig. 10.1.4?

L-1011 transport Signup and view all the answers

What is the term for the load that occurs due to the stabilizer forced bending?

Rib crushing Signup and view all the answers

Which term refers to the unsymmetrical spanwise load distribution on the fin?

Dynamic overyaw Signup and view all the answers

What is the term for the load redistribution resulting from an actuator support?

Concentrated load redistribution Signup and view all the answers

What is the term for the load caused by hail strike on the leading edge?

Instantaneous elevator Signup and view all the answers