Defining Commercial Transport Loss-of-Control: A Quantitative Approach

Wilborn, James E.; Foster, John V.

doi:10.2514/6.2004-4811

Cited by 125 publications

(110 citation statements)

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“…Both the CBT and classroom instruction had the lowest low scores of "Good" (3). But, pilot comments were positive for both.…”

Section: A Pilot Commentsmentioning

confidence: 99%

“…The original crew training flight dynamics model was enhanced based on wind tunnel measurements to accurately represent the flight dynamic characteristic of a transport airplane at stall and post-stall flight conditions. This simulation model is described in detail in references [2][3][4][5].…”

Section: Nasa Ground Based Simulatormentioning

confidence: 99%

“…This research along with recent commercial airline training initiatives has resulted in improved understanding of simulator-based training requirements and simulator model fidelity. [2][3][4][5] In addition, in-flight training research over the past decade has produced a database of pilot performance and recurrency metrics 6 .…”

Section: Introductionmentioning

confidence: 99%

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Upset Simulation and Training Initiatives for U.S. Navy Commercial Derived Aircraft

Donaldson

Priest²,

Cunningham

2012

AIAA Modeling and Simulation Technologies Conference

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Militarized versions of commercial platforms are growing in popularity due to many logistical benefits in the form of commercial off-the-shelf (COTS) parts, established production methods, and commonality for different certifications. Commercial data and best practices are often leveraged to reduce procurement and engineering development costs. While the developmental and cost reduction benefits are clear, these militarized aircraft are routinely operated in flight at significantly different conditions and in significantly different manners than for routine commercial flight. Therefore they are at a higher risk of flight envelope exceedance. This risk may lead to departure from controlled flight and/or aircraft loss 1 . Historically, the risk of departure from controlled flight for military aircraft has been mitigated by piloted simulation training and engineering analysis of typical aircraft response. High-agility military aircraft simulation databases are typically developed to include high angles of attack (AoA) and sideslip due to the dynamic nature of their missions and have been developed for many tactical configurations over the previous decades. These aircraft simulations allow for a more thorough understanding of the vehicle flight dynamics characteristics at high AoA and sideslip. In recent years, government sponsored research on transport airplane aerodynamic characteristics at high angles of attack has produced a growing understanding of stall/post-stall behavior. This research along with recent commercial airline training initiatives has resulted in improved understanding of simulatorbased training requirements and simulator model fidelity.2-5 In addition, inflight training research over the past decade has produced a database of pilot performance and recurrency metrics 6 . Innovative solutions to aerodynamically model large commercial aircraft for upset conditions such as high AoA, high sideslip, and ballistic damage, as well as capability to accurately account for scaling factors, is necessary to develop realistic engineering and training simulations. Such simulations should significantly reduce the risk of departure from controlled flight, loss of aircraft, and ease the airworthiness certification process. The characteristics of commercial derivative aircraft are exemplified by the P-8A Multi-mission Maritime Aircraft (MMA) aircraft, and the largest benefits of initial investigation are likely to be yielded from this platform. The database produced would also be utilized by flight dynamics engineers as a means to further develop and investigate vehicle flight characteristics as mission tactics evolve through the years ahead. This paper will describe ongoing efforts by the U.S. Navy to develop a methodology for simulation and training for large commercial-derived transport aircraft at unusual attitudes, typically experienced during an aircraft upset. This methodology will be applied to a representative Navy aircraft (P-8A) and utilized to develop a robust simulation that should accurately represen...

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“…Both the CBT and classroom instruction had the lowest low scores of "Good" (3). But, pilot comments were positive for both.…”

Section: A Pilot Commentsmentioning

confidence: 99%

Section: Nasa Ground Based Simulatormentioning

confidence: 99%

See 1 more Smart Citation

Upset Simulation and Training Initiatives for U.S. Navy Commercial Derived Aircraft

Donaldson

Priest²,

Cunningham

2012

AIAA Modeling and Simulation Technologies Conference

Self Cite

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show abstract

“…Moreover, the five envelopes defined in [3]: the adverse aerodynamics envelope, unusual Attitude envelope, structural integrity envelope, dynamic pitch control envelope, and dynamic roll control envelope, may also be represented in terms of inequality constraints (2).…”

Section: B the Safe Maneuvering Envelopementioning

confidence: 99%

“…Aircraft LOC accidents are complex, and as stated in Kwatny et al [2], are often associated with flight outside of the normal operating envelope, with non-linear influences, and with an inability of the pilot to control the aircraft. In an attempt to quantify LOC, Wilborn and Foster [3] defined metrics and criteria that can be used to identify LOC events from flight data. These metrics are collectively known as the Quantitative Loss-of-control Criteria (QLC) and consist of five envelopes related to the airplane flight dynamics, aerodynamics, structural integrity and flight control use.…”

Section: Introductionmentioning

confidence: 99%