The Experts below are selected from a list of 12606 Experts worldwide ranked by ideXlab platform
R. J. Spencer - One of the best experts on this subject based on the ideXlab platform.
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Predicting the Certification Basis for airliner air-to-air refuelling
The Aeronautical Journal, 2015Co-Authors: R. J. SpencerAbstract:The premise is that in the future civil Air-to-Air Refuelling (AAR) will become an economic necessity if popular mass air travel is to continue. What is attempted is to provide a contemporary view of how such future operations could be safely undertaken. The intention is to predict the Certification Basis for demonstrating safe AAR operation of Cruiser-Feeder concepts. The necessary systems and aircraft functions are treated very much as they are today when civil certifying a large aeroplane type. The compliance demonstration required for environmental conditions, flight envelope, systems providing the necessary functionality, structural integrity, weight and balance are discussed. Applicable existing civil Certification requirements are identified and where necessary expanded in scope to accommodate AAR operation. Where contemporary material does not supply appropriate guidance then corresponding safety criteria are proposed to address the deficiency. Lessons learnt from military AAR include the drive for interoperability. This has resulted in extensive efforts to standardise equipment and systems, which are equally applicable to civil AAR. Extremely useful advisory material exists, ranging from flight testing techniques to related safety. The importance of ensuring the consistency of failure condition categorisation at system and aircraft level is highlighted. The treatment of failures when two aircraft are in close proximity is something not considered by civil functional hazard analysis. The concept of AAR as an additional flight phase is introduced and affected system safety analyses identified. Examples of failure conditions that are not catastrophic at system level, but potentially could be at aircraft level during AAR are provided. Rendezvous scenarios are described to illustrate their influence on the Certification Basis. Combining such considerations with the factors that influence aircraft design leads to ramifications for handling qualities, performance and fuel system design. A viable and certifiable AAR configuration is consequently proposed. Consideration is given to treating operational Certification in a progressive manner similar to existing LROPS (Long Range Operations).
Mavris, Dimitri N. - One of the best experts on this subject based on the ideXlab platform.
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A Model-Based Aircraft Certification Framework for Normal Category Airplanes
'American Institute of Aeronautics and Astronautics (AIAA)', 2020Co-Authors: Bendarkar Mayank, Xie Jiacheng, Briceno Simon, Harrison, Evan D., Mavris, Dimitri N.Abstract:Presented at AIAA Aviation 2020 ForumA typical aircraft Certification process consists of obtaining a type, production, airworthiness, and continued airworthiness certificate. During this process, a type Certification plan is created that includes the intended regulatory operating environment, the proposed Certification Basis, means of compliance, and a list of documentation to show compliance. This paper extends previous work to demonstrate a model-based framework for the management of these Certification artifacts for normal category airplanes. The developed framework integrates the regulatory rules and approved means of compliance in a single model while using best-practices found in Model-Based Systems Engineering (MBSE) literature. This framework, developed using SysML in MagicDraw captures not just the textual requirements and verification artifacts, but also their relationships and any inherent meta-data properties via custom defined stereotype profiles. Additionally, a simulation capability that automates the extraction and export of the applicable rules (Certification Basis) and corresponding means of compliance for any aircraft under consideration at the click of a button has been developed. The framework also provides numerous additional benefits to different stakeholders that have been described in detail with examples where necessary
Bendarkar Mayank - One of the best experts on this subject based on the ideXlab platform.
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A Model-Based Aircraft Certification Framework for Normal Category Airplanes
'American Institute of Aeronautics and Astronautics (AIAA)', 2020Co-Authors: Bendarkar Mayank, Xie Jiacheng, Briceno Simon, Harrison, Evan D., Mavris, Dimitri N.Abstract:Presented at AIAA Aviation 2020 ForumA typical aircraft Certification process consists of obtaining a type, production, airworthiness, and continued airworthiness certificate. During this process, a type Certification plan is created that includes the intended regulatory operating environment, the proposed Certification Basis, means of compliance, and a list of documentation to show compliance. This paper extends previous work to demonstrate a model-based framework for the management of these Certification artifacts for normal category airplanes. The developed framework integrates the regulatory rules and approved means of compliance in a single model while using best-practices found in Model-Based Systems Engineering (MBSE) literature. This framework, developed using SysML in MagicDraw captures not just the textual requirements and verification artifacts, but also their relationships and any inherent meta-data properties via custom defined stereotype profiles. Additionally, a simulation capability that automates the extraction and export of the applicable rules (Certification Basis) and corresponding means of compliance for any aircraft under consideration at the click of a button has been developed. The framework also provides numerous additional benefits to different stakeholders that have been described in detail with examples where necessary
M F Zulkarnain - One of the best experts on this subject based on the ideXlab platform.
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preliminary design of gl 1 sailplane cockpit arrangement and control mechanism based on easa cs 22 requirements
IOP Conference Series: Materials Science and Engineering, 2019Co-Authors: T Mulyanto, M F ZulkarnainAbstract:Sailplaning or gliding is one branch of aero sports activities in Indonesia under Federation of Aero Sport Indonesia (FASI). Until now, the most common sailplane used in Indonesia is still Schweitzer SGS 1-26, which is a single seated metal-fabric sailplane designed in 1955 and produced until 1979. The development of a new national glider to replace the Schweitzer SGS 1-26 had been conducted since 2013 and resulted in a design named GL-1. The EASA CS-22 had been chosen as Certification Basis for GL-1 as there is no equivalent yet in Indonesian CASR. A preliminary design of internal cockpit arrangement and control mechanism has been conducted. This study shows that the control mechanism using a combination of cable and push-pull rod arrangement satisfy the required control surface movement and limited sailplane interior space.
Frank G Mccormick - One of the best experts on this subject based on the ideXlab platform.
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mock Certification Basis for an unmanned rotorcraft for precision agricultural spraying
2015Co-Authors: Kelly J Hayhurst, Jeffrey M Maddalon, Natasha A Neogi, Harry A Verstynen, Barry Buelow, Frank G MccormickAbstract:This technical report presents the results of a case study using a hazard-based approach to develop preliminary design and performance criteria for an unmanned agricultural rotorcraft requiring airworthiness Certification. This case study is one of the first in the public domain to examine design and performance criteria for an unmanned aircraft system (UAS) in tandem with its concept of operations. The case study results are intended to support development of airworthiness standards that could form a minimum safety baseline for midsize unmanned rotorcraft performing precision agricultural spraying operations under beyond visual line-of-sight conditions in a rural environment. This study investigates the applicability of current methods, processes, and standards for assuring airworthiness of conventionally piloted (manned) aircraft to assuring the airworthiness of UAS. The study started with the development of a detailed concept of operations for precision agricultural spraying with an unmanned rotorcraft (pp. 5-18). The concept of operations in conjunction with a specimen unmanned rotorcraft were used to develop an operational context and a list of relevant hazards (p. 22). Minimum design and performance requirements necessary to mitigate the hazards provide the foundation of a proposed (or mock) type Certification Basis. A type Certification Basis specifies the applicable standards an applicant must show compliance with to receive regulatory approval. A detailed analysis of the current airworthiness regulations for normal-category rotorcraft (14 Code of Federal Regulations, Part 27) was performed. Each Part 27 regulation was evaluated to determine whether it mitigated one of the relevant hazards for the specimen UAS. Those regulations that did were included in the initial core of the type Certification Basis (pp. 26-31) as written or with some simple modifications. Those regulations that did not mitigate a recognized hazard were excluded from the Certification Basis. The remaining regulations were applicable in intent, but the text could not be easily tailored. Those regulations were addressed in separate issue papers. Exploiting established regulations avoids the difficult task of generating and interpreting novel requirements, through the use of acceptable, standardized language. The rationale for the disposition of the regulations was assessed and captured (pp. 58-115). The core Basis was then augmented by generating additional requirements (pp. 38-47) to mitigate hazards for an unmanned sprayer that are not covered in Part 27.