If you were going to design an airspeed system with no errors, what would it loo
ID: 1838764 • Letter: I
Question
If you were going to design an airspeed system with no errors, what would it look like? How would you eliminate the errors?
Compare and contrast the methods of measuring aerodynamic forces in a wind tunnel to that of an airplane in flight.
Compare and contrast an aircraft having a high aspect ratio wing to an aircraft that has a low aspect wing.
What are the operational requirements that drive these designs? All things being equal, which aircraft will--in principle--have longer endurance and why?
Which aircraft will lose more energy in flight under elevated G and why?
Please post references, thank you so much
Explanation / Answer
An ideal airspeed system will display the accurate and reliable value of airspeed . Such a system will include sophisticated devices to ensure the accurate airspeed during various types of incidents. Pitot tubes have helped for many different occasions where the airspeed of an aircraft displayed incorrect values. With recent advanced technology, GPS like devices can give precise coordinates and airspeed, which are more accurate than the mechanical instruments, such as a pitot tube. Joined use of old and new technology will be effective in reducing errors and increasing aircraft safety.
Measurement of aerodynamic forces in a wind tunnel is much easier compared to actual flight. In the case of a wind tunnel, the aircraft is not exposed to external forces which are not controlled by the operators. There are multiple ways to measure the forces, like using smoke or colored fluid to observe the motion of the fluid around a body. In a wind tunnel and actual flight, pitot tubes placed in certain points on an aircraft can be used to calculate various parameters at that points. In short, testing in a wind tunnel can perform a more controlled experiment.
An aircraft having a higher aspect ratio can provide greater stability. Lower aspect ratio aircraft will also produce more induced drag, due to the vortices at the wing tips. The endurance of a high aspect ratio will be higher because of this. Also, a fighter jet has a very low aspect ratio, which is necessary for the greater maneuverability required in a combat situation. Compared to this, a passenger jet have high aspect ratios, needed for long straight flight paths. The lower aspect ratio aircraft will lose more energy during elevated g flight due to the greater induced drag.