Why do air craft still rely on archaic pitot tubes?

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SUMMARY

Aircraft continue to rely on pitot tubes as primary instruments for measuring airspeed due to their critical role in flight safety and performance. While GPS provides accurate ground speed, it does not account for wind effects, which can lead to misleading airspeed readings, especially in scenarios with significant tailwinds. Indicated airspeed is essential for understanding stall and flight characteristics. The discussion highlights the importance of traditional instruments alongside modern technologies like GPS and Inertial Navigation Systems (INS).

PREREQUISITES
  • Understanding of pitot tube functionality in aviation
  • Knowledge of GPS limitations in airspeed measurement
  • Familiarity with Inertial Navigation Systems (INS)
  • Basic principles of aerodynamics and flight safety
NEXT STEPS
  • Research the operational principles of pitot tubes in aircraft
  • Explore the limitations of GPS in aviation, particularly regarding airspeed
  • Study Inertial Navigation Systems (INS) and their applications in modern aircraft
  • Investigate the impact of wind on aircraft performance and navigation
USEFUL FOR

Aerospace engineers, pilots, aviation safety analysts, and anyone interested in the integration of traditional and modern navigation technologies in aircraft.

wolram
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If GPS is or can be so accurate why do air craft still rely on archaic pito tubes? sure keep one as a back up, but for your PRIMARY instrument no way.
 
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GPS provides ground speed, not airspeed. If you were in an airliner and had a 100kt tailwind, GPS would think you were going supersonic.
 
Yes for stall and flight characteristics the indicated airspeed is the most important. I don't know if for navigation they use INS (Inertial Navigation System) with laser guided Giro's, or GPS for speed calculation.
 

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