05-09-2014, 03:31 PM
Black box used in air crafts
[attachment=67691]
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.
Investigator turn to the airplane’s flight data recorder (FDR) and cockpit voice recorder (CVR), also known as “Black boxes”.
In Flight 261, the FDR contained 48 parameters of flight data, and CVR recorded a little more than 30 minutes of conversation and other audible cockpit noises.
HISTORY
The first prototype FDR was produced in 1958 by Dr. David Warren of Aeronautical Research Laboratories of Melbourne, Australia
COCKPIT VOICE RECORDERS
CVR is designed to track the conversations of the flight crew.
There may be up to four microphones in the plane’s cockpit, each connected to cockpit voice recorder.
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
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 (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, chassis and inner components are mangled.
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
CONCLUSION
From the study of Black Box we derived a information that how the information about aircraft mishap is analyzed and unanswered question is answered.
In this study we discuss about various technology various aspects involved in black box.
[attachment=67691]
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.
Investigator turn to the airplane’s flight data recorder (FDR) and cockpit voice recorder (CVR), also known as “Black boxes”.
In Flight 261, the FDR contained 48 parameters of flight data, and CVR recorded a little more than 30 minutes of conversation and other audible cockpit noises.
HISTORY
The first prototype FDR was produced in 1958 by Dr. David Warren of Aeronautical Research Laboratories of Melbourne, Australia
COCKPIT VOICE RECORDERS
CVR is designed to track the conversations of the flight crew.
There may be up to four microphones in the plane’s cockpit, each connected to cockpit voice recorder.
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
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 (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, chassis and inner components are mangled.
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
CONCLUSION
From the study of Black Box we derived a information that how the information about aircraft mishap is analyzed and unanswered question is answered.
In this study we discuss about various technology various aspects involved in black box.