An engineering modification of the blade element momentum equation for vertical descent : an autoration case study

An engineering modification of blade element/momentum theory is applied to describe the vertical autorotation of helicopter rotors. A full non-linear aerodynamic model is considered for the airfoils, taking into account the dependence of lift and drag coefficients on both the angle of attack and the Reynolds number. The proposed model, which has been validated in previous work, has allowed the identification of different autorotation modes, which depend on the descent velocity and the twist of the rotor blades. These modes present different radial distributions of driven and driving blade regions, as well as different radial upwash/downwash patterns. The number of blade sections with zero tangential force, the existence of a downwash region in the rotor disk, the stability of the autorotation state, and the overall rotor autorotation efficiency, are all analyzed in terms of the flight velocity and the characteristics of the rotor. It is shown that, in vertical autorotation, larger blade twist leads to smaller values of descent velocity for a given thrust generated by the rotor in the autorotational state.

A Divine Round Trip: the Literary and Christological Function of the Descent/Ascent Leitmotif in the Gospel of John

The thesis of this dissertation is that the Descent/Ascent Leitmotif, which includes the language of not only descending and ascending, but also going, coming, and being sent, performs a significant literary and christological function in the Gospel of John. The Evangelist's Descent/Ascent Leitmotif becomes the Gospel's organizing principal, drawing together a constellation of verbs and a number of themes, including Jesus-Son's origin, identity, relationship to God, authority, signs and works, life, and glory. In the introductory chapter, after providing a layout of the dissertation, the discussion turns to the spacial dimensions and christological importance of the vertical and horizontal depictions of the descending, ascending, coming, going, and being sent verbs. The focus of chapter two is to explain and illustrate, using a version of the Cinderella story, a method that serves to identify the Leitmotif and the verbs, motifs, and themes the Leitmotif draws within its constellation. This approach, titled a thematic structural method, integrates works from thematic scholars Horst Daemmrich and Eugene Falk with works from literary structural scholars A. J Greimas and Roland Barthes, and is a tool to analyze the influence of the Leitmotif as the Gospel's organizing principal on the relationships between the Leitmotif and numerous themes from which John's Christology emerges. The task of chapter three is to explain the rationale for the selection of the Leitmotif's verbs of descending, ascending, coming, going, and being sent. Chapters four and five investigate how the Evangelist, with the repetition of the Leitmotif, constructs his narrative to tell the story of the historical Jesus and shape the Evangelist's Christology. Additionally, the focus is to analyze the transforming influences of the Descent/Ascent Leitmotif on the themes of Jesus-Son's origin, identity, relationship to the Father, and authority, through his signs and works, life, and glory. The Descent/Ascent Leitmotif depicts a divine round trip, and the emphasis of chapter six is to examine the role of the Leitmotif in Jesus-Son's departure from the world and return to God. The Evangelist's use of the Leitmotif in Jesus' prayer to the Father (John 17) and the promise of the Paraclete are included in this chapter. Due to the Descent/Ascent Leitmotif's inherent spatial overtones, elements related to Jesus' return, including heaven, world, the hour, and his form after his resurrection, are explored from a cosmological and ontological perspective.

Descent from banking union to political chaos. CEPS Commentary, 24 January 2014

To counteract the powerful anti-Europe sentiments swirling throughout the EU today and to motivate EU citizens to vote in a constructive spirit in the upcoming European elections, Karel Lannoo argues in this commentary that the functioning of the EU institutions needs to be openly discussed and proposals need to be aired for improving the decision-making process to render it more transparent and democratic. This process would encompass, in his view, the proper role and functioning of the European Commission, the European Parliament and the member states in the EU Council and the interrelationships between these institutions.

Differential educational attainment among "at-risk" youth : a case study of language minority youth of Mexican descent and low socioeconomic status /

"August 1982."

On mammalian descent : being nine lectures delivered in the theatre of the Royal College of Surgeons during February, 1884 /

Mode of access: Internet.

Observations in surgery : being a collection of one hundred and twenty eight different cases : with particular remarks on each, for the improvement of young students : wherein not only the method of practice in difficult labours, but other distempers incident to the female sex are copiuosly enlarged on : among others that of the descent of the womb, clearly proving the reality of such a disease in opposition to Mr. Veduc : to which are added the particular receipts of such remedies as were used by the author in each case /

Mode of access: Internet.

A grammar of the Pukhto, Pushto, or Language of the Afgháns ... together with translations from the articles of war, &c., and remarks on the language, literature, and descent of the Afghán tribes.

Paged contiuously.

Distaff descent.

An account of the Martin and Price families.

Primitive society : the beginnings of the family & the reckoning of descent /

Includes index.

Darwinism refuted. An essay on Mr. Darwin's theory of "The descent of man."

Mode of access: Internet.

The Descent from the Cross

Lucas Vosterman after Rubens; 1 ft. 10 29/32 in. x 1 ft. 5 1/8 in.; engraving

An extract from the will of Samuel Emlen, of Burlington, N.J., who died 12th month 29th, 1837, creating a trust for the benefit of persons of Indian and African descent.

Interleaved.

Debrett's baronetage of England : containing their descent and present state, their collateral branches, births, marriages, and issue, from the institution of the order in 1611... / by John Debrett.

Mode of access: Internet.

Essays upon several subjects concerning British antiquities; viz. I. Introduction of the feudal law into Scotland. II. Constitution of Parliament. III. Honour. Dignity. IV. Succession or descent.

Introduction signed: Henry Home.

Americans of royal descent. A collection of genealogies of American families whose lineage is traced to the legimate issue of kings.

Mode of access: Internet.