1 / 7

Airplane Speed Sensor

Airplane Speed Sensor. Fregis Effayong Rowan University Mechatronic. How do they look like?. Pitot tube. Invented by a French Engineer (Henry Pitot ) in 1732 A pitot is a pressure measurement instrument used to measure fluid flow velocity.

dalit
Download Presentation

Airplane Speed Sensor

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Airplane Speed Sensor FregisEffayong Rowan University Mechatronic

  2. How do they look like?

  3. Pitot tube • Invented by a French Engineer (Henry Pitot) in 1732 • A pitot is a pressure measurement instrument used to measure fluid flow velocity. • Pitot was modified to it modern way form by another French scientist called Henry Darcy later in the mid 19th century. • The air speed indicator measures the difference between a static sensor not in the air stream and a sensor (pitot tube) in the air stream. • When the airplane is standing still, the pressure in each tube is equal and the air speed indicator shows zero. • The rush of air in flight causes a pressure differential between the static tube and the pitot tube. • The pressure differential makes the pointer on the air speed indicator move. An increase in forward speed raises the pressure at the end of the pitot tube. • In airplanes, electronics also compensate for altitude and air temperature to make the air speed measurement accurate.

  4. How aircraft speed sensors work?

  5. Stagnation pressure = static pressure + dynamic pressureNOTE: That equation applies ONLY to fluids that can be treated as incompressible. Liquids are treated as incompressible under almost all conditions. Gases under certain conditions can be approximated as incompressible.

  6. The laser light velocity sensors have been successfully tested in a high-speed wind tunnel • Some Engineers from University of New South Wales (UNSW) have developed a low-cost laser that can accurately and speedily measure the velocity of commercial aircraft. Instead of having physical components located in the airflow, the new laser light system can be located in a temperature-controlled environment inside the plane, which will hopefully reduce the number of plane crashes. • The currently used velocity sensors, known as Pitot tubes, are susceptible to icing over in bad weather and have been suggested as possible failure points for several fatal aircraft accidents. • The most notable of these was Air France Flight 447, which crashed into the Atlantic Ocean in 2009; 216 passengers and 12 crew members died.

  7. Conclusion • Since the accident, Air France has replaced the pitots on its Airbus fleet with a newer model. • http://www.youtube.com/watch?v=JRnRKJRSI4I

More Related