Black box1

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BLACK-BOXBuilt To Survive

Flight Data & Voice Recorder

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CONTENTS Introduction History Inside The Black Box Flight Data Recorder Cockpit Voice Recorders Technology used for Recording Built To Survive Testing a CSMU Working of Black Box Use Of Black Box Conclusion

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Introduction

The Black Box is a Flight Recorder used to record specific Aircraft performance parameters

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History

Dr. David Warren

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Inside the black-box

Flight Data Recorder (FDR)

Cockpit Voice Recorder (CVR)

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Flight Data Recorders

The Flight Data Recorder(FDR) is designed to record the operating data

from the plane’s systems

• Time • Pressure altitude • Airspeed • Vertical acceleration • Rudder-pedal position • Control-wheel position • Horizontal stabilizer • Fuel flow

Few Parameters Recorded By Most FDRs

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Cockpit Voice Recorder

CVR is designed to track the conversations of flight crew

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The Positions Of The Four Microphones

Pilot’s headset Co-pilot’s headset Headset of a third crew member(if there is any third crew member) Near the center of the cockpit , where it can pick up audio alerts and other sounds

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Technology Used For Recording And Storage

Magnetic tape

Solid-state technology

Memory Boards

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.

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Memory Boards

Magnetic tape recorder Solid state recorder

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Built To Survive• In many airline accidents, the only devices that Survive are the Crash-survivable memory units (CSMUs) of the flight data recorders and cockpit voice recorders.• Typically, the rest of the recorders’ chassis and inner components are mangled.

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Testing a CSMUThere are several tests that make up the crash-survival sequence:

Crash impact Pin drop Static crush Fire test Deep-sea submersion Salt-water submersion Fluid immersion

Working of Black Box

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).

The beacon cannot be heard by the human ear but can be easily detected by sonar. 15

Working of Black Box

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.

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Use of Black Box

• 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”

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This black box alone was left to tell the story of the crash of Egypt Air Flight 990.

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The cockpit voice recorder from the downed Alaska Airlines

Flight 261

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Challenges….!

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• From the study of Black Box we derived a information that how the information about aircraft mishap is analyzed & unanswered question is answered.

• The black box was good, in its time .• Let’s pray for safe Journey.• The U.S. government's Next Generation Air

Transportation System, is now to take up the challenge.

Conclusion

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Queries...?

Be Brave to Express yourself

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