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Assessment is nothing but process of
documenting.
Validation can be defined as certifying by
regulations.
 Hardware ass...
 It mainly depends on FTA(fault tree
analysis)&FMEA(failure modes of effective
analysis)
 For compiling systems the faul...
Major -factors of Avionics System
• Capability
• Reliability
• Maintainability
• Certificability
• Survivability(military)...
• Capability:
– How capable is avionics system?
– can they do the job and even more?
– Designer to maximize the capability...
• Maintainability:
– Closely related to reliability
– System must need preventive or corrective
maintenance.
– System can ...
 Certificability:
 Major area of related for avionics in civil airlines.
 Certification conducted by the regulatory age...
• Survivability:
– It is a function of susceptibility and vulnerability.
– Susceptibility: measure of probability that an ...
• Risk:
– Amount of failures and drawbacks in the design and
implementation.
– Over come by using the latest technology an...
Certification is most important part for
civil avionics designers.
Certification is the challenging process
between the ...
For digital avionics systems ,
the most important regulation is FAR part 25.1309
FAR part 25.1309 is for equipment,system...
 The equipment, systems, and installations
whose functioning is required by this far
25.1309.
 it must be designed to en...
 The occurrence of any failure condition
which would prevent the continued safe
flight and landing of the airplane is
ext...
 It is also describes the possible modes of
failure and explains damages from external
sources.
 It explains the probabi...
THANK YOU
PRESENTED BY:-
SAI SHUBHANKAR
digital avionics systems
digital avionics systems
digital avionics systems
digital avionics systems
digital avionics systems
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digital avionics systems

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qualitatevily evaluating systems and major regulations for civil avionics certification

Publicada em: Engenharia
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digital avionics systems

  1. 1. Assessment is nothing but process of documenting. Validation can be defined as certifying by regulations.  Hardware assessment and validation are major parts of building a modern digital avionics systems.  The proposed system can be developed by many stages of design and build  The latest phases of hardware assessment and validation are mainly focus on qualitative evaluation
  2. 2.  It mainly depends on FTA(fault tree analysis)&FMEA(failure modes of effective analysis)  For compiling systems the fault tolerance systems are required for the use of modern computer based tools  Why because we can use finite number of states of fault tolerant systems .
  3. 3. Major -factors of Avionics System • Capability • Reliability • Maintainability • Certificability • Survivability(military) • Life cycle cost(military) • Technical risk • Weight & power
  4. 4. • Capability: – How capable is avionics system? – can they do the job and even more? – Designer to maximize the capability of the system within the equipment that are imposed. • Reliability: – Designer efforts to make systems as reliable as possible. – High reliability less maintenance costs. – If less reliable customer will not buy it and in terms of civil airlines the certificating agencies will not certify it.
  5. 5. • Maintainability: – Closely related to reliability – System must need preventive or corrective maintenance. – System can be maintained through built in testing, automated troubleshooting and easy access to hardware.
  6. 6.  Certificability:  Major area of related for avionics in civil airlines.  Certification conducted by the regulatory agencies based on detailed, expert examination of all features of aircraft design and operation.  The avionics architecture should be straight forward and easily understandable.  Avionics certification focus on three analyses: preliminary hazard, fault tree, and FMEA.
  7. 7. • Survivability: – It is a function of susceptibility and vulnerability. – Susceptibility: measure of probability that an aircraft will be hit by a given threat. – Vulnerability: measure of the probability that damage will occur if there is a hit by the threat • Life cycle cost(LCC): • It deals with economic measures need for evaluating avionics architecture. • It includes costs of varied items as spares acquisition, transportation, storage and training (crew and Maintenance personnel's),hardware development and test, depreciation and interest.
  8. 8. • Risk: – Amount of failures and drawbacks in the design and implementation. – Over come by using the latest technology and fail proof technique to overcome both developmental and long term technological risks. • Weight and power: – Minimize the weight and power requirements are two fundamental concepts of avionics design. – So the design must be light weight and power consuming which is possible through the data bus and latest advancement of electronics devices.
  9. 9. Certification is most important part for civil avionics designers. Certification is the challenging process between the designers and regulated authorities. FAR(federal aviation regulations) establish the requirements & procedure for safety in civil transports.
  10. 10. For digital avionics systems , the most important regulation is FAR part 25.1309 FAR part 25.1309 is for equipment,system&installation They are also other factors FAR part 25.581 for lightning protection FAR part 25.671 for controlsystem & general FAR part 25.672 for stability & automatic systems In this section we will focus on FAR part 25.1309
  11. 11.  The equipment, systems, and installations whose functioning is required by this far 25.1309.  it must be designed to ensure that they perform their functions under any operating condition.  The airplane systems and associated components considered separately .
  12. 12.  The occurrence of any failure condition which would prevent the continued safe flight and landing of the airplane is extremely doubtful.  The occurrence of any other failure conditions which would reduce the capability of the airplane or the ability of the crew to cope with adverse operating conditions.
  13. 13.  It is also describes the possible modes of failure and explains damages from external sources.  It explains the probability of multiple failures.  It is approved by FAA(federal aviation administration)  FAR part 25.1309 is addressable for hardware functions only.  For software operations will be addressed in DO-178A
  14. 14. THANK YOU PRESENTED BY:- SAI SHUBHANKAR

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