The document discusses the history and development of aircraft black boxes, which are flight data recorders and cockpit voice recorders that are designed to survive plane crashes. It describes how black boxes have evolved from using magnetic tape to record data to using solid-state storage. It also explains the protective casing of the black boxes, called the crash-survivable memory unit, and how black boxes can be located underwater through acoustic pinging devices. The document provides details on the key parameters recorded by black boxes and their role in investigating plane crashes.

1. By
Divyesh Mistry
14ME63R02
BLACK BOX

2.  Black Box
 Working
 Construction
 Uses
 Drawbacks
 Beyond Black Box
 References

3.  The original black box was designed by David
Warren.
 In 1953, Warren came up with the idea of an onboard
flight-data recorder.

4.  It is a Flight Data Recorder.
 It record's specific aircraft performance parameters
and conversations in the cockpit.

6.  The Exterior of the FDR is coated with heat-
resistant Bright Red paint.

7.  There are two Black-Boxes Flight Data Recorder &
Cockpit Voice Recorder.

8. MAGNETIC TAPE
RECORDER
SOLID STATE
RECORDER
 Introduced in the 1960s
 It can track about 100
parameters.
 Magnetic-Tape CVRs store
the last 30 minutes of
sound.
 Introduced in the 1990s
 It can track more than 700
parameters in larger
aircraft.
 CVRs that used solid-state
storage can record 2 hours
of audio.

9. MAGNETIC TAPE
RECORDER
SOLID STATE
RECORDER

10.  Time
 Pressure altitude
 Airspeed
 Vertical acceleration
 Magnetic heading
 Control-column position
 Rudder-pedal position
 Control-wheel position
 Horizontal stabilizer
 Fuel flow
Few parameters recorded by most FDRs:

11.  The unit is usually mounted in the aircraft's
empennage (tail section).

12.  These recording devices cost between $10,000 to
$15,000 each.
 Both Black Boxes are powered by one of two power
generators that draw their power from the plane's
engines.
 The Memory boards have enough digital storage
space to accommodate 2 hours of Audio data for
CVRs and 25 hours of Flight data for FDRs.

13.  In Airline accidents, the only
devices that survive are the
CSMU.
 CSMU
 Three layers of materials in
CSMU:
 Aluminum housing(0.25
inch)
 High-temperature insulation
(1 inch)
 Stainless-steel shell (0.5
inch)

14.  Crash Impact
 Pin Drop
 Static Crush
 FireTest
 Deep sea Submersion
 Salt water Submersion
 Fluid Immersion

15. Underwater Locator
Beacon (ULB)
 Submergence sensor on the
side of the beacon.
 Pulses at 37.5 kilohertz (kHz).
 sound as deep as 14,000 feet
(4,267 m).
 Once the beacon begins
"pinging," it pings once per
second for 30 days.

16. Retrieving Information
This portable interface can
allow investigators quick
access to the data on a black
box..
 Retrieval of FDR
 Retrieval of CVR
 Once the beacon begins
"pinging," it pings once per
second for 30 days.

17.  Retrieval comes first.
 Help identify the reasons for a plane crash.
“Mistakes are a great educator when one is
honest enough to admit them and willing to
learn from them”

22. Glass Box

24.  http://www.howstuffworks.com/gadgets/other-gadgets/black-box.htm.
 http://spectrum.ieee.org/aerospace/aviation/beyond-the-black-box.
 http://news.discovery.com/tech/beyond-the-black-box.html.
 Barrett, Brian. "The Secret Sauce of an Airplane's Black Box." Gizmodo.
Jan. 10, 2011. (March 6, 2014) http://gizmodo.com/5729507/the-secret-
sauce-of-airplanes- black-box .
 http://en.wikipedia.org/wiki/Emergency_Position_Indicating_Radio_Bea
con.
 http://anonymouse.org/cgi-bin/anon-
www.cgi/http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgTSO.nsf
/0/e040550c3ab32300862572c200113975/$FILE/TSO-C124b.pdf.

25. Be Brave to Express yourself