1,465 research outputs found

    Aerodynamic characteristics, including effect of body shape, of a Mach 6 aircraft concept

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    Longitudinal aerodynamic characteristics for a hydrogen-fueled hypersonic transport concept at Mach 6 are presented. The model components consist of four bodies with identical longitudinal area distributions but different cross-sectional shapes and widths, a wing, horizontal and vertical tails, and a set of wing-mounted nacelles simulated by slid bodies on the wing upper surface. Lift-drag ratios were found to be only sightly affected by fuselage planform width or cross sectional shape. Relative distribution of fuselage volume above and below the wing was found to have an effect on the lift-drag ratio, with a higher lift drag ratio produced by the higher wing position

    Landing arrangement for aerospace vehicle Patent

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    Aerospace vehicle with variable planform for hypersonic and subsonic fligh

    Control system for rocket vehicles Patent

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    System for aerodynamic control of rocket vehicles by secondary injection of fluid into nozzle exhaust strea

    Landing arrangement for aerial vehicle Patent

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    Aerodynamic configuration for aircraft capable of high speed flight and low drag for low speed takeoff or landing upon presently existing airfield

    Experimental and theoretical aerodynamic characteristics of two hypersonic cruise aircraft concepts at Mach numbers of 2.96, 3.96, and 4.63

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    The longitudinal and lateral directional aerodynamic characteristics for two Mach 5 cruise aircraft concepts were determined for test Mach numbers of 2.96, 3.96, and 4.63. Estimates from hypersonic impact theory and first order supersonic linearized theory were compared with data to indicate the usefulness of these methods. The method which applied tangent cone empirical theory to the body and tangent wedge theory to the wings and to the horizontal and vertical tails provided the best estimates. The tangent cone empirical theory applied to all components showed poor agreement with data, and the linear theory estimates were accurate only for lift coefficient and drag coefficient at low angles of attack

    Subsonic maneuver capability of a supersonic cruise fighter wing concept

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    A theoretical and experimental investigation was conducted of the subsonic maneuver capability of a fighter wing concept designed for supersonic cruise. To improve the subsonic maneuver capability, the wing utilized full-span leading- and trailing-edge flaps that were designed with the aid of a subsonic-analysis computer program. Wind-tunnel tests were made at Mach numbers of 0.3, 0.5, and 0.7. Force and moment data obtained were compared with theoretical predictions of Mach 0.5 from two subsonic-analysis computer programs. The two theoretical programs gave a good prediction of the lift and drag characteristics but only a fair prediction of the pitching moment. The experimental results of this study show that with the proper combination of leading- and trailing-edge flap deflections, a suction parameter of nearly 90 percent can be attained at a Mach number of 0.5 and a lift coefficient of 0.73; this is a three-fold improvement from 30 percent for the basic wing

    How Infusing Music Into Elementary Mathematics Curriculum Affects Students’ Learning and Engagement

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    Mathematics is an academic subject that does not come easily to everyone. Many students who excel in extra curricular activities after school have a poor relationship with academics, but does it have to be this way? The research question addressed in this capstone project is: how does infusing music into elementary mathematics curriculum affect student learning and engagement? Research was compiled in regards to multiple intelligence theory, learning styles, teaching mathematics best practices, and music and math integration in the classroom. The capstone project was then developed in order to gain more insight into the potential benefits of incorporating music into elementary mathematics curriculum. This capstone project offers a revised version of 3 units of a second grade math curriculum. Within each of these unit plans, there are several opportunities for teachers to integrate music. Music is integrated during the lessons themselves as a teaching tool in the form of original songs with lyrics about different concepts, vocabulary, and procedures related to addition and subtraction. Music is also integrated within embedded brain breaks, calm music during work time, as well as in assessment options. Through this project, teachers have access to unit plans, lesson plan examples, three full lessons complete with slides and teacher’s script per unit, and a document containing lyrics to original songs. Each of these documents is editable and can be modified to meet the needs of individual teachers, learners, and classes. The goal of this project is to provide an access point to mathematics for students who do not thrive via traditional instructional methods while incorporating their passions, interests, and lived experiences.

    Causal Analysis on SEEG data

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    Marcellus of Ancyra in modern research

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    This thesis gives a detailed overview of modem research on Marcellus of Ancyra. It is divided into three parts: the first part deals with the person of Marcellus, his life, work, theology and historical influence as seen by different scholars. Especially in the questions of chronology and Marcellus' orthodoxy, a consensus is yet to be achieved. The second, largest part analyses in detail the ascriptions of certain pseudepigrapha to the pen of Marcellus by modem scholarship: the writings De Sancta Ecclesia, Sermo Maior de Fide, Ekthesis Pisteos, De Incarnatione et Contra Arianos, Contra Theopaschitas (or Epistula ad Liberium).A critical review of modem scholarly literature in this matter shows that only De Sancta Ecclesia and Contra Theopaschitas could have a claim to Marcellan authorship, but also that the real problem is one of methodological decisions: are the undisputed Fragments of Marcellus the only criterion for ascribing other works to him? Is the apparent shift towards orthodoxy which is documented in Fragment 129 (Epistula ad lulium) genuine? If so, does it open the way towards the ascription of clearly orthodox writings which show differences in their theology to the theology of the Fragments? Modern scholarship has not yet come up with a final answer to these questions; the thesis can only point to new fields of research and make French, Italian and especially German literature accessible to English scholars for this purpose by summarizing the results achieved so far. The third part of the thesis contains translations of some short texts dealt with in part two

    Jet aircraft configuration Patent

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    Upper surface, external flow, jet-augmented flap configuration for high wing jet aircraft for noise reductio
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