1. What could be a problem for design if the wingspan is too large?
2. Why is airfoil a important characteristic in the design of a wing?
3. What is the function of a vertical and horizontal stabilizer on a glider
4. Where is the center of gravity along the fuselage (body) of a glider?
5. Where should the vertical and horizontal stabilizer be along the fuselage (body) of a glider? and why?
6. What is the function of a dihedral wing?
7. What should be the approach angle be for the wing? What happen if the approach angle is too large?
8. What is lift to drag ratio? How can the design of a plane increase this ratio?
9. What is a stall in areodynamic? When and how can it happen?
9. What is a stall in areodynamic? When and how can it happen?
6. Dihedral increases roll stability. If the plane rolls to the left, the right wing has less lift (more vertical) and the left one more lift (more horizontal), so the tendency is for the wings to level. Worked fine on my model glider if nothing else.
ReplyDelete2. Airfoils work on the basis of Bernoulli's principle stating that high speed flow is associated with low pressure, and low speed flow with high pressure. Airfoils are designed to increase the speed of the airflow above the surface of a wing, causing a decrease in air pressure. Simultaneously, the slower moving air below the surface of the airfoil increases the air pressure. The combination of the increase of the air pressure below the airfoil and the decrease of air pressure above it creates lift.
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3.The stabilizers (tail) provide stability while the aircraft is flying straight, and the airfoil of the horizontal stabilizer balances the forces acting on the aircraft.&
ReplyDeleteWhile the vertical stabilizer and rudder are placed on the rear of the aircraft (either on the aft fuselage, or at the ends of aft-swept wings), the horizontal surfaces can be placed on the front or the rear.
4. the CG along the fuselage is the point at which an aircraft would balance if it were possible to suspend it at that point.&
It is the mass center of the aircraft, or the theoretical point at which the entire weight of the aircraft is assumed to be concentrated.
8. is the amount of lift generated by a wing or vehicle, divided by the drag it creates by moving through the air. A higher or more favorable L/D ratio is typically one of the major goals in aircraft design; since a particular aircraft's required lift is set by its weight, delivering that lift with lower drag leads directly to better fuel economy, climb performance, and glide ratio.
9. is a branch of dynamics concerned with studying the motion of air, particularly when it interacts with a moving object. Aerodynamics is a subfield of fluid dynamics and gas dynamics, with much theory shared between them. Aerodynamics is often used synonymously with gas dynamics, with the difference being that gas dynamics applies to all gases.