Browse Topic: Flight recorders

Items (33)

Bluetooth Profile Testing Using Packet Tracing in Automotive Domain

2024-26-0349

01/16/2024

With the advancement of automotive industries, the need for wireless connectivity between vehicle and smartphone is increasing. To meet the demand for wireless connectivity, Bluetooth plays a vital role. Testing Bluetooth systems is challenging and complex when development cycles of the system involve multiple partners. The system under test must fulfil consumers expectation of Bluetooth functionality paired with their personal devices. Despite many advances and existence of a few reliable systems, hardware limitation, and lack of standardization in Bluetooth test system are some of the prolonged issues. Throughout the course, various capabilities and existing traditional Bluetooth testing system practice were researched, which majorly at a system level (Black box). The gap of such testing is the escape of defect which involves the interoperability of multiple profiles like AVRCP, HFP, and A2DP. This paper focuses on a reliable testing approach which is based on packet level testing

Selokar, Ashish Kishor, Iqbal, MD Farhan, Anilkumar, Sandhya, Tavhare, Sarika

Research of Vehicle Behavior Classification of Off-Road Motorcycles Using Gradient Boosting

2023-01-1817

10/24/2023

Machine learning is used for the research and development of ITS services and the rider assistance for on-road motorcycle racing. Meanwhile, rider assistance systems for off-road motorcycles have yet to be developed, partly due to the complexity of the measurement conditions, as described in the previous paper. This research aims to create a reliable AI which is capable of classifying typical jump behaviors in off-road riding by machine learning to create a rider assistance system for off-road motorcycles. Motorcycle manufacturers and certain research institutes use motion sensors to collect data, but the data is obtained from a limited number of vehicles and riders. The creation of a rider assistance system requires a large amount of validation data. Furthermore, it is desirable to achieve the target with data that can be measured in mass-produced vehicles, which will make it possible to collect data even from general users. In addition, recent machine learning models are black boxes

Uto, Yuki, Tokunaga, Hisato, Inaba, Taichi, Higashi, Takayuki

Signal compression technology enables E-Fan's flight, potential enhanced ‘black box’ possibilities

15MEIP12_1212/01/2015

V-Nova Ltd. demonstrated the capabilities of its PERSEUS data compression technology for aerospace applications as part of Airbus' all-electric E-Fan technology demonstrator aircraft's flight across the English Channel. During the flight, PERSEUS enabled up- and downstream HD (high-definition, 720p 25 frames/sec) video telemetry over standard, publically accessible 3G mobile networks, with a more than 80% bandwidth reduction compared to traditional technology under similar conditions, said V-Nova

Broge, Jean L.

Signal Compression Technology Enables E-Fan's Flight, Potential Enhanced 'Black Box' Possibilities

TBMG-2357412/01/2015

V-Nova Ltd. demonstrated the capabilities of its PERSEUS data compression technology for aerospace applications as part of Airbus’ all-electric E-Fan technology demonstrator aircraft’s flight across the English Channel

757A-1 Cockpit Voice Recorder (CVR

ARINC757A-1 (Current)08/05/2015

This Characteristic provides guidance for the development and installation of a new generation of Cockpit Voice Recorders (CVRs) using solid-state memory. This document supersedes the earlier ARINC Characteristic 557. ARINC Characteristic 757A is intended to coexist with ARINC Characteristic 757 CVR. Supplement 1 provides the following: " The CVR unit description was updated to clarify the differences in the equipment designed to ARINC 757A versus that designed to ARINC 757, i.e., data link and OMS interfaces are required for ARINC 757A compliance. " Material was added to maintain document alignment with ARINC 757 which has FDR capability. ARINC 757A recorders are not required to have FDR capability. " The time correlation requirement was revised to specify that the CVR should receive its time signal from the same source as the Flight Data Recorder (FDR). " The OMS interface was updated to describe the correct ARINC 429 Sign Status Matrix (SSM) encoding for new CVR designs

Airlines Electronic Engineering Committee

757-6 Cockpit Voice Recorder (CVR

ARINC757-6 (Current)08/01/2015

This document provides guidance for the development and installation of a Cockpit Voice Recorders (CVR) with solid-state memory. Supplement 6 provides the following: " The optional interfaces to data link services and On-Board Maintenance System (OMS) were revised to clarify that if the optional interface is implemented, then it shall be implemented in a specific way. " The power input section was revised to clarity the need for the CVR to be designed to accept 115 Vac power and 28 Vdc power from the aircraft. " The time correlation requirement was revised to specify that the CVR should receive its time signal from the same source as the Flight Data Recorder (FDR). " The OMS interface was updated to describe the correct ARINC 429 Sign Status Matrix (SSM) encoding for new CVR designs

Airlines Electronic Engineering Committee

Minimum Performance Standard for Underwater Locating Devices (Acoustic) (Self-Powered

AS8045A (Current)

08/03/2011

This AS covers ULD utilized in finding flight data recorders, cockpit voice recorders or aircraft. Such ULDs are installed adjacent to the recorders in a manner that they are unlikely to become separated during crash conditions

A-4ULD Underwater Locator Device Working Group

747-3 Flight Data Recorder

ARINC747-3 (Current)06/07/2011

This document provides design guidance for the development and installation of Flight Data Recorders (FDR) which may utilize solid state memory and which may employ some means of data compression. The Flight Data Recorder will be utilized with a Flight Data Acquisition Unit (FDAU) (ARINC Characteristic 573) or a Digital Flight Data Acquisition Unit (DFDAU) (ARINC Characteristic 717) to accommodate mandatory flight data recording and other flight data acquisition needs. The document provides guidance and information to ensure customer controlled interchangeability of equipment in a standard aircraft installation and in data retrieval. The system capability was expanded to accommodate a data bus speed of 1024 words per second

Airlines Electronic Engineering Committee

Assessing Airport Noise Capacity Through Operational Practices; Case-Study CDA at Bucharest Henri Coanda Airport

2010-36-052010/17/2010

This paper is assessing two methods that can be used in assessing the airport noise capacity when new operational practices are implemented at a certain airport. The example given is CDA-continuous descent approach implemented at Bucharest Henri Coanda International airport in Romania. A review of the main operational practices related to CDO (Continuous Descent Operations) with relevance for noise and emissions reduction, shows the importance of working in a team when implementing new operational practices, as well as the need to access data either through FDR (flight data recorder) or from measurements. - The example selected explains the difficulties one can have to extract FDR data. Although the authors of this paper benefitted from FDR from TAROM, the Romanian national airline, it was difficult to be extracted, so the assessment of the airport noise capacity focused on monitoring and measurements undertaken under the flight path. No commonly agreed methodology or toolset presently

Dimitriu, Delia, Munteanu, Dragos, Pleter, Octavian

777-2 Recorder Independent Power Supply (RIPS

ARINC777-2 (Current)10/11/2010

This Characteristic provides the definitions for the physical form and fit dimensions, the electrical interfaces, and the functions of an independent power supply for cockpit voice recorders or crash survivable recorders that combine voice with other recording functions. The RIPS is used to provide backup power that is independent of the aircraft generated power buses. Supplement 2 introduces a description of charge rates for alternate power sources and revises the electrical interface to accommodate monitoring of the RIPS status

Airlines Electronic Engineering Committee

Procedure for the Calculation of Aircraft Emissions

AIR5715 (Current)

07/27/2009

This AIR describes procedures for calculating emissions resulting from the main engines of commercial jet and turboprop aircraft through all modes of operation for all segments of a flight. Piston engine aircraft emissions are not included in this AIR. Some information about piston engine aircraft emissions can be found in FOCA 2007. The principal purpose of the procedures is to assist model developers in calculating aircraft emissions in a consistent and accurate manner that can be used to address various environmental assessments including those related to policy decisions and regulatory requirements. The pollutants considered in this document are: Nitrogen Oxides (NOx) Carbon Monoxide (CO) Total unburned Hydrocarbons (THC) Carbon Dioxide (CO2) Water (H2O) Sulfur Oxides (SOx) Volatile Organic Compounds (VOC) Methane (CH4) Non-Methane Hydrocarbons (NMHC) Non-Methane Volatile Organic Compounds (NMVOC) Nitrous Oxide (N2O) Particulate Matter (PM2.5 and PM10) As indicated above, hazardous

A-21 Aircraft Noise Measurement Aviation Emission Modeling

647A-1 Flight Recorder Electronic Documentation (FRED

ARINC647A-1 (Current)07/01/2009

This specification is an international standard defining the content and format of electronic files which document Flight Data Recording systems. The FRED specification is an expansion of the Flight Recorder Configuration Standard (FRCS) and is intended to provide guidelines for software systems designers and developers of ground support equipment for flight data recorders. The FRED specification has been developed to facilitate the exchange of Flight Data Recorder (FDR) documentation between aircraft manufacturers, operators, and government agencies. This specification addresses the ARINC Specification 664: Part 7, Avionics Full Duplex Switched Ethernet in numerous sections

Airlines Electronic Engineering Committee

FLIGHT RECORDER ELECTRONIC DOCUMENTATION (FRED

ARINC647A-ER1 (Current)07/01/2009

Airlines Electronic Engineering Committee

767-1 Enhanced Airborne Flight Recorder

ARINC767-1 (Current)05/29/2009

This document is intended to provide design guidance for the development and installation of an Enhanced Airborne Flight Recorder (EAFR). The EAFR standard addresses combinations of any or all of the following in a single Line Replaceable Unit (LRU), a Digital Flight Data Recorder (DFDR) function, a Cockpit Voice Recorder (CVR) function, a data link recording function, and an image recording function. This document does not address the overall flight data recorder system requirements but considers interface and system standards. This document does not replace ARINC Characteristic 747 which defines DFDRs. This document addresses the details of the voice recording function but does not describe the audio distribution system. It does not replace ARINC Characteristic 757 which defines CVRs. The EAFR may be used in a single or dual-redundant installation as permitted by regulation. Both configurations are addressed in this Characteristic

Airlines Electronic Engineering Committee

Determination of the Operational Environment of the Propeller Blades on Beech 1900D Aircraft

2008-01-222608/19/2008

Data obtained from digital flight data recorders are used to assess the actual operational environment of propellers on a fleet of Beech 1900D aircraft in commuter role. Information is given on various aerodynamic parameters as well as those pertaining to engine and propeller usage. The takeoff rotation has been identified as the most demanding phase of flight in terms of unsteady loads exerted on the propeller blades. Special attention is paid to ground operations

Dorfling, J., Kliment, L. K., Rokhsaz, K., DeFiore, T., Nguyen, C., Turnberg, J. E.

Minimum Performance Standard General Aviation Flight Recorder

AS8039A (Current)

02/16/2008

This standard covers three (3) basic types of flight recorders as defined below: All requirements specified in Sections 3, 4, 5, 6 and 7 of this standard shall be applicable to all recorder types unless otherwise noted

A-4 Aircraft Instruments Committee

Statistical Detection of Atypical Aircraft Flights

TBMG-5308/01/2006

A computational method and software to implement the method have been developed to sift through vast quantities of digital flight data to alert human analysts to aircraft flights that are statistically atypical in ways that signify that safety may be adversely affected. On a typical day, there are tens of thousands of flights in the United States and several times that number throughout the world. Depending on the specific aircraft design, the volume of data collected by sensors and flight recorders can range from a few dozen to several thousand parameters per second during a flight. Whereas these data have long been utilized in investigating crashes, the present method is oriented toward helping to prevent crashes by enabling routine monitoring of flight operations to identify portions of flights that may be of interest with respect to safety issues

Study on Individual Differences in Thermal Stress Using Black Box Models

2004-01-228707/19/2004

Transient human thermal response characteristics are investigated using two US Army experimental datasets as part of an on-going study to model thermal risk for the warfighter. This paper reports two black box models developed as initial steps to understand the effect of individual differences on transient thermal response and risk. In the first black box model, two transient climatic parameters and six individual characteristics are used as inputs to predict 12 thermal responses including two psychophysical outputs (temperature sensation magnitude, Tsens, and comfort vote, Disc) using experimental data from 35 subjects. For the second black box model, additional individual characteristics are used to model Tcore, Tskin, and the time limit for the individual tolerance to heat stress with heavy clothing, using data from 22 subjects. The insights developed using these component models will be used to develop a decision making framework to predict thermal risk for the warfighter

Jang, Tai S., Iyoho, Anthony, Nair, S. S.

The Paths of Soaring Flight

B-WSP-00901/01/2004

This book is concerned with the sport of soaring, mainly with the mathematical basis of sailplane design and operation. It does not tell the beginner how to fly, but it will give an experienced pilot some background, with historical notes showing how ideas have evolved and could develop in the future. Some of the material is taken from OSTIV (Organisation Scientifique et Technique Internationale de Vol a Viole) publications and from Technical Soaring, neither of which is readily available to the general public. Extensive references are provided in each chapter. Contents: The Sailplane in Still Air Units, and Some Basic Ideas Wings and Winglets The Drag of a Sailplane The Equations of Motion Instruments for Soaring Flight Instruments for Soaring Flight Other Instruments The Sailplane in the Atmosphere The Sailplane in the Atmosphere Flying in Thermals: The Classical Analysis Some Ideas on the Practice of Cross-Country Flying More Advanced Ideas on Cross-Country Flying Optimisations in

Irving, Frank

Utilizing Electronic Control Module Data in Accident Reconstruction

2000-01-046603/06/2000

A heavy truck manufactured in the late 1990's is likely to be equipped with an electronic control module (ECM) which has the capability of being the truck's “flight recorder” in a serious accident. Extracting data from the ECM often answers critical questions regarding vehicle speed and the driver's actions leading up to, during and after a vehicle accident. This paper will briefly discuss the development of the diesel engine ECM from the late 1980's to the present with emphasis on the data recording capabilities related to vehicle accident reconstruction. In particular, vehicle diagnostic sensors which continuously monitor engine speed, vehicle speed, brake switch condition (on/off), clutch position (on/off), cruise switch condition (on/off), etc. will be discussed, as well as software capabilities which track rapid deceleration events (“quick stop occurrences”) and provide a “snapshot” of the vehicle's properties during the moments just prior to and after a collision. Recommendations

Goebelbecker, John M., Ferrone, Christopher

A Method for Accident Reconstruction and Neighborhood Analysis Using an Autonomous Situational Model of Flight and Flight Recorder Data

1999-01-143404/13/1999

Flight accidents with modern aircraft are often a result of complex dynamics of the “pilot (automaton1) - vehicle - operational environment” system. When a “critical mass” of the system’s complexity exceeds a certain level, a “chain reaction” of irreversible cause-and-effect links can be spontaneously triggered in the system behavior leading to a catastrophe. An affordable, practically tested technique is proposed to complement current methods of flight accident analysis. A generic situational model of the system behavior and a computer are employed as a virtual test article. This model includes a six-degree-of-freedom non-linear flight dynamics model, a generic situational pilot model (“silicon pilot”), models of anticipated operational factors (conditions), and a tool for flight scenario planning. Available flight recorder data are used to tune the model and reconstruct the accident. Then the model is used for in-depth examination of the accident’s “neighborhood” in autonomous “what

Burdun, Ivan Y.

Air Accident Investigation Programs - FDRV and AAIT

97556310/01/1997

Two different types of software developed for aircraft safety analysis are described. The Flight Data Recorder Visualiser (FDRV) has been developed to allow interactive, 3D visualisation of FDR/QAR data on low-cost PC platforms. The Air Accident Investigation Tool (AAIT) allows simplified computer-reconstruction of air accidents. Both programs have been successfully applied to air accident/incident investigations. The background, applications and future developments of these programs is outlined in this paper

Whayeb, S. M., Walton, A. C.

Automated Data Collection and Crash Survivability - The Engine Performance Trend Monitor/Structural Integrity (EPTM/SI) System

97148305/01/1997

Providing an automated data collection system together with a regulatory flight recorder function, the Engine Performance Trend Monitor / Structural Integrity (EPTM/SI) System reduces flight crew workload and improves accuracy of collected data by using a lightweight, compact, survivable recording system. This combination system automatically monitors flight loads and aircraft usage for transfer to an Aircraft Structural Integrity (ASIP) program, and records engine trend data for input to engine trend monitoring software while maintaining a record of the last eight hours of flight data. The purpose of this paper is to describe the system components, capabilities, and growth options

Carlson, Lee R.

The Need for a Flight Recorder Within a J1850 Networked Vehicle, and the Potential of Information Retrieved from Onboard Devices

95258008/01/1995

As testing of J1850 networks occur, there is a need for an onboard device to record bus transactions during demanding on and off road trials. A “Flight Recorder” could capture all events or filter out the relevant message traffic and time stamped to significant events as they occur. The “Flight Recorder” may produce data of important value to other elements within a corporation justifying part of its expense

Buczko, Gary A., Hein, Julie

MINIMUM PERFORMANCE STANDARD for UNDERWATER LOCATING DEVICES (ACOUSTIC) (Self-Powered

AS8045 (Historical)

05/01/1993

This AS covers Underwater Locating Devices (ULD) to assist in finding flight recorders, cockpit recorders or aircraft or both. Such ULDs are to be installed adjacent to the recorders in a manner that they are unlikely to become separated during crash conditions

A-4ULD Underwater Locator Device Working Group

The Pond Racer - An Exercise in the Control of Heat Transfer in a Tight Composite Compartment

93015403/01/1993

The POND RACER is an all-Composite, twin boom airplane Figure 1,(1), (2), (3), fitted with two, dual turbocharged automotive engines. The exhaust system, Figure 2, for this six cylinder power plant occupies the rear portion of a compact engine compartment. Initially, no provision was made for moving cooling air through this densely-packed engine compartment. Portions of the exhaust system passed within less than 2.5 cm (1 in.) of the composite cowl enclosing the engine compartment. The temperatures developed could result in failure of the computer,which controls the engine, other components, and the composite cowl in a matter of minutes. Currently-used insulation designs did not appear to provide enough capability to work for this application. A Thermal Protection System was developed, installed, and proven out during test flights. Analysis of the flight data, measured by thermocouples linked into the flight recorder, verified the adequacy of the Thermal Protection System. These

Trelease, Robert B.

A Review of the VORAD™ Vehicle Detection and Driver Alert System

922495

11/01/1992

This paper describes a forward looking on-board vehicle detection and driver alert system that provides a distance indication and alert tone to the driver. The system, called VORAD (Vehicular On-board Radar), is the first of its kind to be fielded. The system can be programmed to function in different operating modes, allowing customization to the user's requirements. Some possible operating modes include simply providing an alert to the driver, providing following distance indication measured in seconds based on the vehicles' speeds, or providing following distance measured in feet. The VORAD System also has optional features to enhance its usefulness, including a blind spot alert system and a built-in event recorder. The blind spot system provides additional information to the driver regarding the presence of vehicles in his blind spot for use in making lane changes. The event recorder can act as a “flight recorder” for accident reconstruction, safety training and fleet management

Murphy, Donald O., Woll, Jerry D.

MINIMUM PERFORMANCE STANDARD GENERAL AVIATION FLIGHT RECORDER

AS8039 (Historical)

05/01/1991

This standard covers three (3) basic types of flight recorders as defined below: All requirements specified in sections 3, 4, 5, 6 & 7 of this standard shall be applicable to all recorder types unless otherwise noted

A-4 Aircraft Instruments Committee