Coupled bending-bending-torsion flutter of a mistuned cascade with nonuniform blades

A set of aeroelastic equations describing the motion of an arbitrarily mistuned cascade with flexible, pretwisted, nonuniform blades is developed using an extended Hamilton's principle. The derivation of the equations has its basis in the geometric nonlinear theory of elasticity in which the elongations and shears are negligible compared to unity. A general expression for foreshortening of a blade is derived and is explicity used in the formulation. The blade aerodynamic loading in the subsonic and supersonic flow regimes is obtained from two dimensional, unsteady, cascade theories. The aerodynamic, inertial and structural coupling between the bending (in two planes) and torsional motions of the blade is included. The equations are used to investigate the aeroelastic stability and to quantify the effect of frequency mistuning on flutter in turbofans. Results indicate that a moderate amount of intentional mistuning has enough potential to alleviate flutter problems in unshrouded, high aspect ratio turbofans

Spartan Daily, February 13, 1948

Volume 36, Issue 83https://scholarworks.sjsu.edu/spartandaily/11043/thumbnail.jp

Roswell Daily Record, 12-14-1906

https://digitalrepository.unm.edu/roswell_record_news/2005/thumbnail.jp

A new class of semiclassical wave function uniformizations

We present a new semiclassical technique which relies on replacing complicated classical manifold structure with simpler manifolds, which are then evaluated by the usual semiclassical rules. Under circumstances where the original manifold structure gives poor or useless results semiclassically the replacement manifolds can yield remarkable accuracy. We give several working examples to illustrate the theory presented here.Comment: 12 pages (incl. 12 figures

Soft OR and practice : the contribution of the founders of Operation Research

This paper explores the work of some 43 founders of operations research. In particular, it considers the links between soft operations research (OR) and these founders. Several of the founders were direct influencers of the soft OR proponents, whereas others related to the context, process, and content of soft OR. Coupled with the deductive and inductive reasoning approaches of soft OR, it is argued that soft OR is a legitimate branch of OR. The paper also focuses on the embeddedness of the founders, and the soft OR proponents, in practice and argues that, for academics, engagement with practice has been and will continue to be an important driver for the health and development of operations research

Hieronymus Bosch\u27s Dismantled Triptych and the \u3ci\u3e\u27Devotio Moderna\u27\u3c/i\u3e

Flemish painter Jeroen van Aken, better known as Hieronymus Bosch, created a triptych depicting the folly of humanity. This dismantled triptych includes the Ship of Fools, the Allegory of Intemperance, the Death of the Miser, and the Rotterdam Wayfarer, completed between 1500 and 1510. Throughout his career, Bosch explored a peculiar take on the traditional forms of wellknown religious motifs throughout Renaissance Europe by populating his scenes with fantastical creatures and monsters. Scholars have long since suggested that these forms were inspired by illuminated manuscripts. However, scholars provided no explanation as to why these texts drew Bosch’s attention. This thesis argues that the practice of Devotio Moderna inspired Bosch to mine the pages of illuminated manuscripts for the fantastical images found throughout his oeuvre. The Devotio Moderna movement also functions as a lens through which we can understand the meaning behind his work

Current, November 01, 1973

https://irl.umsl.edu/current1970s/1104/thumbnail.jp

Mustang Daily, November 8, 2001

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.https://digitalcommons.calpoly.edu/studentnewspaper/6801/thumbnail.jp