Showing papers in "Aircraft Design in 1998"

TL;DR: In this paper, the effect of Gurney flaps on the NACA 4412 airfoil was investigated using the one-equation turbulence model of Baldwin and Barth.

TL;DR: McMasters et al. as discussed by the authors developed a large C-wing transport configuration for which Boeing and the authors were granted a design patent in 1995 and the results of a Research Analysis contract (NAS1-20269) focused on a large, unconventional (C-wing) transport configuration.

TL;DR: In this paper, the effects of various flat-plate lift-enhancing tabs on a two-element airfoil with a slotted flap were studied at a constant Reynolds number, with computed results shown to be in good agreement with experimental data.

TL;DR: In this article, a fresh approximation for the phugoid mode is put forth by equating the coefficients of the product of the short period equation and the Phugoid equation (as yet unknown) to the coefficients in the fourth-order characteristic polynomial.

TL;DR: In this paper, a series of smart subsonic and supersonic flow controllers are presented with applications to the design of aircraft gas turbine engine components, which are on-demand vortex generators capable of injecting co-and counter-rotating streamwise vortices.

TL;DR: “Starting mass” gives the opportunity to combine these two heterogeneous sides of the equipment properties into one complex characteristic, which depends on the flight duration and on the aircraft engine parameters.

TL;DR: In this paper, the results of five graduate classroom design teams are reviewed in order to assess the feasibility of carriercapable tactical waverider-configured aircraft designed for cruise Mach numbers in the range 3≤M∞≤5.

TL;DR: A refreshing approach to present the derivation of the equations of motion of aircraft is exemplified in this paper based on the finding that the students appreciate the algebra better if they are enlightened about the logic behind it.

TL;DR: In this article, the authors introduce a risk analysis procedure to be applied when a completely new project is to be started, and the object of the analysis is a new aircraft project carried out in the Aerospace Department of the Polytechnic of Turin.

TL;DR: In this paper, the complexity of the equations and the number of parameters involved make it difficult to appreciate how a change to the specification of an aircraft alters the final design, and the analysis in this paper gives students an insight into the interaction between the many important parameters.

TL;DR: In this paper, a three-dimensional numerical examination of vortex trapping on the upper surface of a swept wing is presented, which is accomplished by the addition of two fences placed parallel to each other and to the leading edge.

TL;DR: In this paper, the authors developed and analyzed a representative notional design concept for a Next-Generation Attack Fighter (NGAF), then conducting trade studies of range, performance, payload, and technologies, followed by study of alternative approaches to attaining tri-service capability.

TL;DR: In this article, the authors present a flexible and relatively fast analytical method to carry out the off-design analysis of a powerplant installation for a supersonic transport aircraft (bypass engines).