USAF (United States Air Force) Stability and Control DATCOM (Data Compendium)

Finck, Rafael

doi:10.21236/adb072483

Cited by 62 publications

(72 citation statements)

References 0 publications

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“…A diet manual from 1923 claimed that plump girls were more likely to marry than thin girls. 167 The male author sternly advised his female readers: "Ergo, put fat or flesh under your skin, willowy young lady! Don't try to look like the lean and lank caricatures in the awful fashion plates.…”

Section: Fall 2010mentioning

confidence: 99%

“…They never laugh at a plump girl, even if she overdoes it a little." 168 Despite the increase of normative pressure of the new slender body ideal that was promoted now in fashion magazines and beauty manuals, the messages about slenderness in women were still conflicted, while diet literature from and for men depicted slenderness and dieting as unambivalently positive.…”

Section: Fall 2010mentioning

confidence: 99%

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Regime Change: Gender, Class, and the Invention of Dieting in Post-Bellum America

Vester

2010

Journal of Social History

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"Regime Change" argues against commonly held interpretations that see dieting as a practice established in the 1920s to control women at a time when they gained suffrage and greater economic independence. This article offers an alternative reading, arguing that diet advice literature arrived in the US in the 1860s and originally targeted a male, white, middle-class audience. While the hegemonic beauty ideal for the female body was at its heftiest, men started to build muscle and reduce weight. The ideal of the slender male body was associated with white superiority, social mobility and the national ambition for an American empire. When white middle-class women eventually started dieting in greater numbers in the 1890s, it was because they claimed the same mastery over their bodies as men—and demanded the same privileges as their male peers over immigrants, African Americans and working-class people, who were increasingly imagined as overweight. Revising the history of dieting to show its origins as a masculine practice appropriated by women to stake a claim to class and race privilege invites a rethinking of power and resistance in the disciplining of the female body.

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Section: Fall 2010mentioning

confidence: 99%

Section: Fall 2010mentioning

confidence: 99%

Regime Change: Gender, Class, and the Invention of Dieting in Post-Bellum America

Vester

2010

Journal of Social History

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“…11 The option of using CFD codes e.g., FLUENT TM were ruled out because of the complexity involved, and the lack of detailed geometric data available during conceptual design stage. The Fig 7 shows the methodology of integration and the data flow of the Digital DATCOM with the design code.…”

Section: E Aerodynamics Modulementioning

confidence: 99%

Multi-criteria Optimization of Unmanned Aerial Vehicle for Snow studies over Himalayas

Dineshkumar¹,

Pant²

2010

13th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference

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This paper describes a methodology for conceptual design and sizing of an Unmanned Aerial Vehicle (UAV) to be used by scientists for snow cover evaluation and other scientific studies in lower Himalayas in India. The problem is posed in a multi-criteria optimization framework with wing span (representing size) and stall speed (representing performance) as the two conflicting objective functions. Eleven design variables are considered, which relate to the wing geometry and setting angle, flap size, propeller radius, fuel mass, air brake drag-coefficient, aircraft length and take-off mass. In addition, an engine selection parameter is used to select one among three existing engines suitable for this class of UAVs. Inequality constraints are imposed on take-off and landing distance, propeller tip Mach No. and stall speed. Two equality constraints on fuel mass required and total mass computed are also imposed for design balance. It was seen that in most cases, the optimum configuration has the lowest wing aspect ratio, highest wing t/c ratio, smallest aircraft length and highest flap area fraction. Low aspect ratio and high t/c for the wing result in lower wing weight; their adverse effect on drag coefficient and hence mission fuel weight is not significant since the mission is of short duration. Smaller aircraft length results in lighter tail-booms, and larger flap results in better field performance, which were found to be the dominant constraints.

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“…Formerly, the flight dynamics modeling of a fixed-wing UAV in the case of BPPT Wulung UAV [1] have been conducted using the linear systems approach [2] in which the analytical model aerodynamic coefficients are calculated using DATCOM software [3]. Flight test data of Wulung UAV has also been obtained to identify a linear model using grey-box method [4] that involves the analytical linear model.…”

Section: Introductionmentioning

confidence: 99%

“…This paper presents the development of a nonlinear flight dynamics model in any conditions of the flight altitude and airspeed by calculating aerodynamic coefficients as functions of altitude and airspeed. The program source of DATCOM software [3] are used as the basis to build analytical equations for aerodynamic coefficients using basic aerodynamics of lifting surfaces [10]. The advantage of this proposed nonlinear model is to eliminate the use of thirdparty software to obtain the aerodynamic coefficients, thus the geometry characteristic of the fixed-wing UAV such as wing span and wing chord can be directly applied.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Modeling of a Fixed-Wing Unmanned Aerial Vehicle: a Case Study of Wulung

Triputra

Trilaksono

Adiono

et al. 2015

J. Mechatron. Electr. Power Veh. Technol.

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Developing a nonlinear adaptive control system for a fixed-wing unmanned aerial vehicle (UAV) requires a mathematical representation of the system dynamics analytically as a set of differential equations in the form of a strict-feedback systems. This paper presents a method for modeling a nonlinear flight dynamics of the fixed-wing UAV of BPPT Wulung in any conditions of the flight altitude and airspeed for the first step into designing a nonlinear adaptive controller. The model was formed into 10-DOF differential equations in the form of strict-feedback systems which separates the terms of elevator, aileron, rudder, and throttle from the model. The model simulation results show the behavior of the flight dynamics of the Wulung UAV and also prove the compliance with the actual flight test results.

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USAF (United States Air Force) Stability and Control DATCOM (Data Compendium)

Cited by 62 publications

References 0 publications

Regime Change: Gender, Class, and the Invention of Dieting in Post-Bellum America

Regime Change: Gender, Class, and the Invention of Dieting in Post-Bellum America

Multi-criteria Optimization of Unmanned Aerial Vehicle for Snow studies over Himalayas

Nonlinear Dynamic Modeling of a Fixed-Wing Unmanned Aerial Vehicle: a Case Study of Wulung

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