Flight data recorders, also known as black boxes, are electronic devices used to record parameters of an aircraft's performance. They consist of a flight data recorder and cockpit voice recorder. The first prototype flight data recorder was developed in 1956. Modern black boxes use solid state technology that can record up to 25 hours of flight data and survive extreme conditions like fires, crashes, and underwater submersion. Recorded data helps investigators determine the causes of accidents and prevent future incidents.

1. PRESENTATION ON
BLACK BOX
Represented by
MOHD AARISH
ECE 2

2. CONTENT
INTRODUCTION
HISTORY
INSIDE THE BLACK BOX
TECHNOLOGY USED
TESTING A CSMU
PARAMETERS RECORDED BY FDR
ADVANTAGES
BIBLIOGRAPHY

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. HISTORY
 The first prototype FDR
was made in 1956 By
DAVID WARREN in
aeronautical research
laboratories of
Melbourne , Australia .

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. INSIDE THE BLACK BOX
 A FDR is shown below which is recovered after a
crash

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. COCKPIT VOICE RECORDERS

10. TECHNOLOGY USED
 MAGNETIC TAPES
 SOLID STATE
TECHNOLOGY

11. 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 .

12. 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 . .

13. 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)

14.  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
.)

15. 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

16. ADVANTAGES
It is very useful for accident
investigations .
The mistakes or error can be
avoided in other aircrafts .

17. Bibliography -
 WIKIPEDIA
 GOOGLE
 (science.howstuffworks.com)

18. THANK YOU

19. ANY QUERIES ?