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Black box

It is a presentation on black box for engineering students

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Black box

  1. 1. PRESENTATION ON BLACK BOX Represented by MOHD AARISH ECE 2
  2. 2. CONTENT INTRODUCTION HISTORY INSIDE THE BLACK BOX TECHNOLOGY USED TESTING A CSMU PARAMETERS RECORDED BY FDR ADVANTAGES BIBLIOGRAPHY
  3. 3. INTRODUCTION  It is an electronics device used to record any instructions send to any electronics system in an aircraft  It records specific parameters of performance of aircraft  A black box consist of FDR & CVR .
  4. 4. HISTORY  The first prototype FDR was made in 1956 By DAVID WARREN in aeronautical research laboratories of Melbourne , Australia .
  5. 5. flight data recorder  It is an electronics device used to record any instructions send to any electronics system on an aircraft.  It records various performance parameters on an aircraft .
  6. 6. INSIDE THE BLACK BOX  A FDR is shown below which is recovered after a crash
  7. 7. Cockpit voice recorder  It records the audio environment in the flight deck of an aircraft for the purpose of accident & incidents .  This is typically achieved by recording the signals of the microphones & earphones of the pilots headsets & of an area microphone in the roof of the cockpit .  According to FAA after 2005 the recording duration is minimum of 30 minutes .  But according to NTSB it should be of 2 hours.
  8. 8. COCKPIT VOICE RECORDERS
  9. 9. TECHNOLOGY USED  MAGNETIC TAPES  SOLID STATE TECHNOLOGY
  10. 10. MAGNETIC TAPES  This technology was introduced in late `1960’s & made magnetic tapes a recording medium up to the introduction of solid state technology .  CVR & FDR records over the oldest data with the newest data in an endless loop recording pattern .  Then DFDR’S were introduced which can record at 64 12-bit data per seconds. But it was limited to flights having digital avionics like boeing 767 & airbus a320 .  In this technology it can record up to 30 min of data .
  11. 11. solid state technology  The introduction of this technology expanded recording capacity , enhanced crashfire survivability ,& improved recording reliability .  It can record up to 64 12 bit data words per seconds or four times the capacity of magnetic tapes in DFDR’s  It can records up to 25 hours of flight data . .
  12. 12. TESTING A CSMU (CRASH SURVIVABLE MEMORY UNIT)  CRASH IMPACT (researchers shoot the CSMU down in an air cannon to create an impact of3400Gs)  PIN DROP (researchers apply 500 pound weight with a 0.25 steel pin) STATIC CRUSH(for five minute researchers apply5000 pound per square inch to each six axis points)
  13. 13.  FIRE TEST (researches apply 1100 c for 1 hour)  DEEP SEA SUBMERSION (researchers place the CSMU in a tank of salt water up to 24 hours)  SALT WATER SUBMERSION (it must survive in a salt water up to 30 days)  FLUID IMMERSION(various components are placed in variety of aviation fluids like jet fuels , lubricants etc .)
  14. 14. Parameters recorded by most FDR’S  Time  Pressure attitude  Air speed  Vertical acceleration  Magnetic heading  Fuel flow  Horizontal stabilizer  Control column position  Control wheel position  Rudder –pedal position
  15. 15. ADVANTAGES It is very useful for accident investigations . The mistakes or error can be avoided in other aircrafts .
  16. 16. Bibliography -  WIKIPEDIA  GOOGLE  (science.howstuffworks.com)
  17. 17. THANK YOU
  18. 18. ANY QUERIES ?

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