Lessons Learned from the F/A-22 and F/A-18 E/F Development Programs

Younossi, Obaid; Stem, David E.; Lorell, Mark A.; Lussier, Frances M.

doi:10.7249/mg276

Cited by 13 publications

(5 citation statements)

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“…Previous studies have looked at the environment factors that impact the effectiveness of EVMS application. These include project controls experience (Wolf 2014), project management ability (Weaver 2016), culture (King 2018), communication (McNamee andImmonen 2019;Turner and Müller 2004), EVM technical knowledge (Kim 2000), effective decision making (Bolinger and Phillips 2018;Younossi et al 2005), accurate and timely data (Shi 2019;Hunter et al 2014), technology tools (Weaver 2016), and lack of engagement (Kim 2000), among many others. In the EVMS knowledge area, some specific EVMS environment factors have been investigated; however, there is a need for a comprehensive EVMS environment factor compilation made up of key factors around which an assessment method can be designed.…”

Section: Evms Environmentmentioning

confidence: 99%

Earned Value Management System State of Practice: Identifying Critical Subprocesses, Challenges, and Environment Factors of a High-Performing EVMS

et al. 2021

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For more than five decades, Earned Value Management Systems (EVMS) have been applied by organizations to manage their projects in different industries. However, many organizations still struggle to apply Earned Value Management (EVM) techniques to assess and reliably control their project outcomes. This work investigated the state of practice of EVMS. This paper identifies challenges facing practitioners, critical EVMS subprocesses, and key EVMS environment factors, based on a large survey of 294 expert respondents. Sample respondents had project management experience of greater than 20 years on average, and represented a diverse set of projects and industries (e.g., capital projects, aerospace, defense, energy, and others). The responses from this survey helped craft an agreed-upon set of definitions for EVM, EVMS, EVMS maturity, and EVMS environment that are all provided in this paper. Moreover, out of 10 total EVMS subprocesses, planning and scheduling was ranked as the subprocess with the greatest impact on EVMS, by far. When ranking the top factors that impact the EVMS environment, the following factors rose to the top: organizational culture; efficient EVMS development process; leadership's past EVMS experience; effective and accountable leadership; and quality and level of data available. Moreover, leadership attitude toward EVMS was found to be the most critical EVMS challenge, by a wide margin. Comparing different perspectives, the data showed that project/program owners consider EVM implementation costs to be a major challenge, while contractors and consultants consider adequate calendar time needed for preparing EVMS to be a critical EVMS environment factor. Overall, this paper contributes to the engineering management body of knowledge by identifying the most important subprocesses and factors of a high-performing EVMS applied to a diverse array of complex projects and programs (e.g., aerospace, defense, construction, software, etc.

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Section: Evms Environmentmentioning

confidence: 99%

Earned Value Management System State of Practice: Identifying Critical Subprocesses, Challenges, and Environment Factors of a High-Performing EVMS

et al. 2021

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“…Providing performance guarantees of the structure, the main criteria for the box design must be assured. Mechanical properties of the carbon fiber composite, such as, high tensile and compressive elastic modulus, high notched tensile and notched compressive strength of the carbon fiber composite, offershigh flaperon efficiency, sufficient buckling stability of skins and spar webs, as well as, high bearing strength for load introductions [28,29]. Figure 3 shows a typical of the structure of the front fuselage in the cockpit area and it demonstrates how here too the same criteria as for the wing are mainly valid.…”

Section: Introductionmentioning

confidence: 94%

Untitled

2018

MSEJ

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The main objective of the paper is to present the main criteria for the selection of carbon fiber composite materials for fighter aircraft. Nowadays, more than ever, customers for fighter aircraft demands a highly maneuverable, agile aircraft that is reliable and easy to maintain. Composite materials are, besides metal alloys, the most important materials for aerospace application. Application of carbon fiber thermosets as airframe materials offersa significant weight and cost reductions in manufacturing process. In the last decades, such materials overcome more than 15% and 50% of the structural weight of civil and military aircraft, respectively. Weak points in the basic materials, i.e. fiber (strain, stiffness) and resin (lowviscosity) are now well known and improvements led to a new generation of carbon fiber composites. Several suppliers are offering in their chemical composition, mechanical properties and processing. This paper describes the selection criteria based on fighter aircraft components with respect to design and manufacturing requirements and presents a comparison of different carbon fiber composites.

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“…The airframe and avionics experienced 42 and 25 percent cost growth from 1996 to 2002, respectively. 45 The program also experienced schedule delays of up to a year for delivery of airframes due to airframe manufacturing difficulties. 46 Although technology alone is not responsible for cost and schedule overruns, evidence of immature technology contributing to program risk exists.…”

Section: Risk Managementmentioning

confidence: 99%

Managing Uncertainty: Risk Management in Acquisition

Laughman¹

2010

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number.

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Lessons Learned from the F/A-22 and F/A-18 E/F Development Programs

Cited by 13 publications

References 0 publications

Earned Value Management System State of Practice: Identifying Critical Subprocesses, Challenges, and Environment Factors of a High-Performing EVMS

Earned Value Management System State of Practice: Identifying Critical Subprocesses, Challenges, and Environment Factors of a High-Performing EVMS

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Managing Uncertainty: Risk Management in Acquisition

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