Topic
Area rule
About: Area rule is a research topic. Over the lifetime, 129 publications have been published within this topic receiving 649 citations. The topic is also known as: Whitcomb area rule & transonic area rule.
Papers published on a yearly basis
1 / 2
Papers
8 Jul 1953
TL;DR: In this paper, the relation of the area rule to the linear formulas for wave drag at lightly supersonic speeds is discussed, and a theory for determining wing-body shapes of minimum drag at subsonic Mach numbers is discussed and some preliminary experiments are reported.
Abstract: The relation of Whitcomb's "area rule" to the linear formulas for wave drag at lightly supersonic speeds is discussed. By adopting an approximate relation between the source strength and the geometry of a wing-body combination, the wave-drag theory is expressed in terms involving the areas intercepted by oblique planes or Mach planes. The resulting formulas are checked by comparison with the drag measurements obtained in wind-tunnel experiments and in experiments with falling models in free air. Finally, a theory for determining wing-body shapes of minimum drag at supersonic Mach numbers is discussed and some preliminary experiments are reported.
80 citations
TL;DR: In this article, the inviscid transonic flow past a thin wing having swept leading edges, with smooth lift and thickness distributions, was shown to possess an outer nonlinear structure determined principally by a line source and a line doublet.
Abstract: The inviscid transonic flow past a thin wing having swept leading edges, with smooth lift and thickness distributions, is shown to possess an outer nonlinear structure determined principally by a line source and a line doublet. Three domains (the thickness-dominated, the intermediate, and the lift-dominated), representing different degrees of lift control of the outer flow, are identified; a transonic equivalence rule valid in all three domains is established. Except in one domain, departure from the Whitcomb-Oswatitsch area rule is significant; the equivalent body corresponding to the source effect has an increased cross-sectional area depending nonlinearly on the lift. This nonlinear lift contribution results from the second-order corrections to the inner (Jones) solution, but produces effects of first-order importance in the outer flow. Of interest is an afterbody effect dependent on the vortex drag, which is not accounted for by the classical transonic small-disturbance theory.
36 citations
1 Dec 1980
TL;DR: In this paper, the system uses linearized theory methods for the calculation of surface pressures and supersonic area rule concepts in combination with linearised theory for calculation of aerodynamic force coefficients. Interactive graphics were included in the system to display or edit input and to permit monitoring and readout of program results.
Abstract: The system uses linearized theory methods for the calculation of surface pressures and supersonic area rule concepts in combination with linearized theory for calculation of aerodynamic force coefficients. Interactive graphics were included in the system to display or edit input and to permit monitoring and readout of program results.
32 citations
TL;DR: In this article, the authors discuss various characteristics of the oblique wing as they relate to aircraft design, including lift-drag ratio, flight control and trim and aero-elastic stability.
30 citations
1 Dec 1980
TL;DR: In this article, an integrated system of computer programs was developed for the design and analysis of supersonic configurations, using linearized theory methods for the calculation of surface pressures and SUPA rule concepts in combination with linearised theory for calculation of aerodynamic force coefficients.
Abstract: An integrated system of computer programs was developed for the design and analysis of supersonic configurations. The system uses linearized theory methods for the calculation of surface pressures and supersonic area rule concepts in combination with linearized theory for calculation of aerodynamic force coefficients. Interactive graphics are optional at the user's request. Representative test cases and associated program output are presented.
27 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 2 |
| 2019 | 1 |
| 2018 | 1 |
| 2015 | 1 |
| 2014 | 3 |