PRESENTATION ON

BLACK BOX

SUBMITTED BY:-Mr. durga prasad mishra8th SEM MECHANICAL ENGG.REGD NO-- o901221108

PLAN OF PRESENTATION INTRODUCTION HISTORY INSIDE THE BLACK BOX COCKPIT VOICE RECORDERS (CVR) FLIGHT DATA RECORDERS (FDR) TECHNOLOGY USED FOR RECORDING AND STORAGE HOW TRANSMISSION TAKES PLACE BUILT TO SURVIVE TESTING A CSMU UNDERWATER LOCATER BEACON RETRIEVING INFORMATION OTHRE USES OF BLACKBOX CONCLUSION REFERENCES

INTRODUCTION The Black Box is a Flight Recorder used to record

specific aircraft performance parameters. With any airplane crash, there are many

unanswered questions as to what brought the plane down.

Investigators turn to the airplane's flight data recorder.(FDR) and cockpit voice recorder (CVR), also known as "black boxes," for answers.

In Flight 261, the FDR contained 48 parameters of flight data, and the CVR recorded a little more than 30 minutes of conversation and other audible cockpit noises.

HISTORY The first prototype FDR was produced

in 1956 by Dr. David Warren of Aeronautical Research Laboratories of Melbourne, Australia.

INSIDE THE BLACK-BOX COCKPIT VOICE RECORDERS

FLIGHT DATA RECORDERS

COCKPIT VOICE RECORDERS

CVR is designed to track the conversations of the flight crew.

THE POSITIONS OF THE FOUR MICROPHONES

Pilot’s headset Co-pilot’s headset Headset of a third crew member (if

there is a third crew member) Near the center of the cockpit, where it

can pick up audio alerts and other sounds

FLIGHT DATA RECORDERS

The Flight Data Recorder (FDR) is designed to record the operating data from the plane’s system.

PARAMETERS RECORDED BY MOST FDRS: Time Pressure altitude Airspeed Vertical acceleration Magnetic heading Control-column position Rudder-pedal position Control-wheel position Horizontal stabilizer Fuel flow

TECHNOLOGY USED FOR RECORDING AND STORAGE:

Magnetic Tape

Solid-State Technology

RECORDING AND STORAGE(MAGNETIC TAPE)

SOLID-STATE TECHNOLOGY Solid-state recorders are considered

much more reliable than their magnetic-tape counterparts.

Solid state uses stacked arrays of memory chips

Boards are about 1.75 inches (4.45 cm) in diameter and 1 inch (2.54 cm) tall.

TRANSMISSION OF DATA

• Data from both the CVR and FDR is stored on stacked memory boards inside the crash-survivable memory unit (CSMU). • All of the data collected by the airplane's sensors is sent to the flight-data acquisition unit (FDAU) at the front of the aircraft .

BUILT TO SURVIVE (CRASH-SURVIVAL MEMORY UNITS-CSMU)

In many airline accidents, the only device that survive.

Basic protection elements are:-

Aluminum housing High-temperature

insulation Stainless-steel shell The rest of the recorders,

chasis and inner components are mangled.

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

UNDERWATER LOCATOR BEACON Black boxes are

equipped with an underwater locator beacon (ULB).

Cylinder is actually a beacon.

Beacon sends out an ultrasonic pulse

submergence sensor

RETRIEVING INFORMATION This portable

interface can allow investigators quick access to the data on a black box.

With solid-state recorders

OTHER USES FOR BLACK BOX TECHNOLOGY

Automobile manufacturing Future aspects

CONCLUSION From the study of Black Box we derived

a information that how the information about aircraft mishap is analyzed & unanswered question is answered.

In this study we discuss about various technology various aspects involved in black box.

REFERENCES www.google.com www.aerospaceweb.org www.aerodynamics.com www.popularmechanics.com www.avista.com

THANK YOU