Aircraft Systems, Design and Technology Meeting

1986 ◽  
Keyword(s):  
Systems Design ◽  
Design And Technology ◽  
Aircraft Systems

Engineering and Technology Based on Rapid Prototyping

2015 ◽  
Vol 770 ◽  
pp. 622-627 ◽  
Author(s):  
A.A. Saprikin ◽  
E.A. Ibragimov ◽  
E.V. Babakova
Keyword(s):  
Product Development ◽  
Rapid Prototyping ◽  
Systems Design ◽  
Design And Technology ◽  
Solid Model ◽  
Layer Deposition ◽  
Automation Systems ◽  
Engineering And Technology ◽  
Cad Cam ◽  
Technology Cad

In the process of design and product development, prototyping model is an important step to finalize the product. Rapid Prototyping (RP) is a technology of product synthesis layer deposition material. The method was developed in the early 1980s as a consequence of the enormous growth of automation systems design and technology (CAD / CAM). The prototype of a complex solid model to determine the final appearance of the product, evaluate the assemblability of products, etc.

The Probabilistic Approach to Safety—Success Or Failure?

1995 ◽  
Vol 209 (3) ◽  
pp. 177-183
Author(s):  
R G W Cherry
Keyword(s):  
Probabilistic Approach ◽  
Systems Design ◽  
Safety Analysis ◽  
Current Application ◽  
Aircraft Systems

Numerical probabilities have been used as an aid to aircraft systems design and safety analysis for some thirty years. This paper considers the background to the philosophy, its current application and the benefits that might be gained from further developments. The approach is also put into the context of other opportunities that might exist for seeking further enhancements to aircraft safety.

Development of an aircraft systems dispatch reliability design methodology

2006 ◽  
Vol 110 (1108) ◽  
pp. 345-352 ◽  
Author(s):  
M. Bineid ◽  
J. P. Fielding
Keyword(s):  
Design Methodology ◽  
Systems Design ◽  
Aircraft Design ◽  
Design Stage ◽  
Component Level ◽  
Component Reliability ◽  
System Architectures ◽  
Reliability Design ◽  
Early Design Stage ◽  
Aircraft Systems

Abstract This paper describes the development of a generic aircraft systems dispatch reliability design methodology (ASDRDM) that has been developed for use during early phases of the aircraft systems design process. The methodology incorporates prediction of both reliability and maintainability through the aircraft design hierarchy, down to component level. It can be applied at the early design stage, but can also be used for advanced design phases and can use generic or actual failure rate and mean time to repair data. It allows designers to modify system architectures and component reliability and maintainability characteristics. The paper shows the validation that has been performed, and its use is demonstrated by a case-study.

Large aircraft reliability study as important aspect of the aircraft systems' design changes and improvements

2020 ◽  
pp. 095441002092562
Author(s):  
Włodzimierz Balicki ◽  
Paweł Głowacki ◽  
Leszek Loroch
Keyword(s):  
Systems Design ◽  
Risk Level ◽  
Security Threats ◽  
Reliability Study ◽  
Aircraft Systems ◽  
Design Changes ◽  
Incident Reporting Systems ◽  
Reporting Systems ◽  
Large Aircraft

Along with the increase in air traffic, the number of reported aviation events also increases. The authors have performed processing of the data included in the European Coordination Centre for Aviation Incident Reporting Systems (ECCAIRS) analyzing large aircraft reliability and safety of their operations considering events according to ICAO aviation occurrence categories. The airframe systems are the biggest contributor to the total number of reported events which occurred on the Polish registered large aircraft in the years 2008–2018. Failures of these systems caused more than 23% of total reported aviation events. Based on the ECCAIRS data, determination of occurrence categories essential for aviation safety was performed with the assessment of their safety risk level. Also, detailed airframe systems' reliability study was carried out in order to assess the real reason of their failures. Airframe systems' faults were assigned to the specific ATA chapters and then to each of their sections. The most frequently occurring defects of each unit of the particular airframe system were identified. The results of this analysis may support the decisions of supervisory authorities in the areas where security threats are most important. They can also help aircraft operators with identification of the airframe units which require special attention, and as support in improvement of safety analysis. Identification of significant parts due to the frequency of malfunctions of the system components can be a support for designers who have the information needed to improve the design of specific airframe system.

On the Application of Cognitive Compatibility to Aircraft Systems Design and Evaluation

1997 ◽  
Vol 41 (1) ◽  
pp. 43-45 ◽  
Author(s):  
Anthony D. Andre
Keyword(s):  
Systems Design ◽  
Stimulus Response ◽  
Aircraft Systems ◽  
Computer Aided ◽  
Limited Applicability ◽  
Computer Based ◽  
Automated Tools ◽  
Display Control ◽  
The Relationship ◽  
Design Result

Much research has been performed examining various aspects of the relationship between displays and controls in the aircraft cockpit as well as other, related contexts. Yet, the applicability of this work to the design or evaluation of modern aircraft systems is still limited. One reason for this limitation is the disproportionate focus on the physical (spatial) aspects of display-control relationships, often referred to as stimulus-response (S-R) compatibility, relative to the cognitive or perceptual aspects. Another reason for the limited applicability of this research to applied systems design is the lack of computer-aided models and automated tools which incorporate the established principles and guidelines. It is argued here that in order to optimize both the design process and design result of future cockpit interfaces, models of cognitive compatibility must be developed and incorporated into computer-based design and evaluation tools.

Turbocharger Synchronous Vibration Control on High Speed Balancer: Test and Prediction

2013 ◽  
Author(s):  
Kostandin Gjika ◽  
Antoine Costeux ◽  
Pradeep Mahadevan
Keyword(s):  
Vibration Control ◽  
Structural Dynamics ◽  
Test Data ◽  
High Speed ◽  
Deep Understanding ◽  
Systems Design ◽  
Design And Technology ◽  
Dynamics Model ◽  
Rotor Bearing ◽  
Bearing System

Current trends for advanced automotive engines focusing on downsizing, better fuel efficiency and lower emissions have led to several changes in turbocharger bearing systems design and technology. Automotive turbochargers are running faster under high engine vibration level. Vibration control is becoming a real critical issue and turbocharger manufacturers are focusing more and more on new and improved balancing technology. This paper deals with turbocharger synchronous vibration control on high speed balancers. In a first step the synchronous rotordynamics behavior is identified. The developed fluid bearing code predicts bearing rotational speed (in case of fully-floating design), operating inner and outer bearing film clearances and bearing force coefficients. A rotordynamics code uses this input to predict the synchronous lateral dynamic response of the rotor-bearing system by converging with bearing eccentricity ratio. The rotor-bearing system model is validated by shaft motion test data on high speed balancer (HSB). It shows that only one of the peaks seen on the synchronous G level plot collected in a high speed balancer can be explained by rotordynamics physics. A step-by-step structural dynamics model and analysis validated by experimental frequency response functions provides robust explanations for the other G level peaks. The synchronous vibration response of the system “turbocharger-HSB fixture” is predicted by integrating the predicted rotordynamics rotational bearing loads on the structural dynamics model. Numerous test data show very good correlation with the prediction, which validates the developed analytical model. The “rotordynamics – structural dynamics model” allows deep understanding of turbocharger synchronous vibration control as well as optimization of the high speed balancer tooling.

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