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PRESENTATION ON
BLACK BOX
Represented by
MOHD AARISH
ECE 2
CONTENT
INTRODUCTION
HISTORY
INSIDE THE BLACK BOX
TECHNOLOGY USED
TESTING A CSMU
PARAMETERS RECORDED BY FDR
ADVANTAGES
BIBLIOGRAPHY
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 .
HISTORY
 The first prototype FDR
was made in 1956 By
DAVID WARREN in
aeronautical research
laboratories of
Melbourne , Australia .
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 .
INSIDE THE BLACK BOX
 A FDR is shown below which is recovered after a
crash
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.
COCKPIT VOICE RECORDERS
TECHNOLOGY USED
 MAGNETIC TAPES
 SOLID STATE
TECHNOLOGY
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 .
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 . .
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)
 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
.)
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
ADVANTAGES
It is very useful for accident
investigations .
The mistakes or error can be
avoided in other aircrafts .
Bibliography -
 WIKIPEDIA
 GOOGLE
 (science.howstuffworks.com)
THANK YOU
ANY QUERIES ?