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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 169 for “"Trim"”.
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Analysen zu TRIM-Genen in Primaten
… dieser Dissertation wurde die Evolution von TRIM-Genen mit identischer Domänenstruktur wie das antivirale TRIM5a (RBCC-B30.2) untersucht. Die analysierten TRIM-Gene lokalisieren innerhalb zweier Gencluster auf Chromosom 6 und Chromosom 11 (MHC- und 11p15-Cluster). Diejenigen TRIM-Gene, die …
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Fixed-trim re-entry guidance analysis
The terminal guidance problem for a fixed-trim re-entry body is formulated with the objective of synthesizing a closed-loop steering law. A transformation of variables is made that reduces the order of the state system for the guidance problem, and a subsequent linearization with motion along the …
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The Archaeology and History of Medieval Trim, County Meath
… Butler wrote four editions of his history of Trim.2 In the 140 years since that time, the publication of a large corpus of primary documents relating to medieval Irish towns has been accompanied by a revolution in approaches to source material and research methodology. More recently, …
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A pattern enumeration approach to the trim loss problem
… the characteristics of practical one dimensional trim loss problems. As a result of the wide range of these characteristics, previous scheduling methods have only had a limited range of applicability. A heuristic approach is proposed, based on pattern enumeration, which can be used to develop …
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Trim Angle of Attack of Flexible Wings Using Non-Linear Aerodynamics
… (previously McDonnell Douglas) Long Beach. The trim angle of attack is calculated for a range of desired lift values. In addition to the Newton's method algorithm, a non derivative method (NDM) based on fixed point iteration, typical of fixed angle of attack calculations in aeroelasticity, is …
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Aerodynamic pitch-up of cranked arrow wings: estimation, trim, and configuration design
… new method to the analysis of tail designs for trim at high lift coefficients. The survey of past research placed emphasis on 1) understanding the problem of pitch-up, 2) ascertaining the effects of leading and trailing edge flaps, and 3) determining the benefits and shortfalls of tail, …
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A Fractal Surface Model for Multi-Component Trim: Applications to Boron-Carbon Materials
Made available in DSpace on 2017-07-06T18:56:18Z (GMT). No. of bitstreams: 3 Shaheen_Mohammad_A_MS.pdf: 69106845 bytes, checksum: aad990c3541ed3c23a7f82a1da5953cc (MD5) Shaheen_Mohammad_A_MS_ABS.pdf: 609449 bytes, checksum: b42b81c22582d72b2618813e145223bf (MD5) license.txt: 4813 bytes, checksum: …
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Trim, Control, and Performance Effects in Variable-Complexity High-Speed Civil Transport Design
Numerous trim, control requirements and mission generalizations have been made to our previous multidisciplinary design methodology for a high speed civil transport. We optimize the design for minimum take off gross weight, including both aerodynamics and structures to find the wing planform and …
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Conceptual Assessment of an Oblique Flying Wing Aircraft Including Control and Trim Characteristics
… as well as showing that the aircraft could be trimmed at given conditions. Wave drag was investigated to determine benefits for an oblique flying wing. This form of drag was reduced by the distribution of volume afforded by the slewing of the aircraft's wing. Once a reasonable concept was …
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An investigation into the thermal coefficients of precast concrete trim and Virginia limestone
… that mortar joints, where precast concrete trim and limestone building blocks are used in conjunction, tend to crack in the course of one or two years to such an extent as to admit water. It seemed possible that a difference in the thermal coefficients of the two materials might cause …
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Trajectory optimization for a fixed trim re-entry vehicle using direct collocation with nonlinear programming
… optimal trajectories for a class of fixed-trim atmospheric re-entry vehicles. A four degree-of-freedom vehicle model is introduced and appropriate environmental models are chosen and implemented. Software is developed to discretize the optimal control problem using a direct collocation …
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Active structural acoustic control of aircraft interior flow noise via the use of active trim panels
… actuators to the aircraft interior cockpit crown trim panel and use them to actively control aircraft interior noise with feed-forward adaptive LMS control algorithms. The experiments were performed on a Cessna Citation III fuselage with the production crown interior trim panel in place. Flow …
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Implementation of a trim routine in a rotor model for the numerical simulation of helicopter flow-fields
… project is to develop, validate and implement a trim routine for a numerical rotor model, developed for the use in simulations of a helicopter exterior flow-field. In this investigation a ROBIN fuselage geometry was utilised. Simulations of the fuselage without the rotor were carried out …
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A computer model for a fixed-trim re-entry vehicle using the Gracey guidance law with evasive capabilities
Advances in strategic missile systems are needed to provide a capability to attack targets that are hardened and, perhaps defended. In this study a point-mass simulation employing an advanced guidance law is examined for its accuracy and evasive capabilities. A nonlinear programming (NLP} …
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The work-family balance experiences of production couples operating Chinese Cut, Make and Trim factories in Newcastle, South Africa
… of women in production couples in cut, make and trim factories in Newcastle, South Africa. A production couple is first and foremost a business partnership that involves joint ownership of a clothing factory, however the relationship is also a strategy the women use to satisfy their emotional …
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Aeroelastic Modeling of Blade Vibration and its Effect on the Trim and Optimal Performance of Helicopter Rotors using a Harmonic Balance Approach
<p>This dissertation concerns the optimization of the aeroelastic performance of conventional</p><p>helicopter rotors, considering various design variables such cyclic and higher</p><p>harmonic controls. A nite element model is introduced to model the structural</p><p>eects of the blade, and a …
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Highline Rescue Boat Systems: A study of the load created by tethered rescue boats with respect to stream velocity, trim and hull size.
… the current vector. The independent variables of trim (relative positioning of the load within the boat) and average stream velocity were investigated. Under low flow conditions, when trimmed neutrally (the crew were positioned centrally), the Eurocraft induced the highest force on the high line …
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Improving sawmill residue chip quality
… of material entering a residue chipper. Trim ends and oversize chips contributed the most pieces, but only 10% of the residue weight. Two-foot trim blocks accounted for the remaining material, 90% by weight. A number of these pieces resulted from slashing entire boards or cutting longer …
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MODELING AND DESIGN OF A SMART DOUBLE-PANEL SYSTEM FOR THE CONTROL OF SOUND TRANSMISSION INTO AIRCRAFT CABIN
… materials are now used in the design of trim panels and additional sound absorption materials are also used in fuselage structures. However, this improvement in interior noise reductions is limited to mid-range and high-range frequencies (above about 1000 Hz). In fact, double-panel …
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A comprehensive approach to determining the nutritional and sensory properties of today's cooked pork
The effects of carcass fat, trim level, cooking method, and final internal temperature on the composition, nutrient content and retention of cooked pork were determined. Cooking method (broiling, braising or frying) and final internal temperature (70$\sp\circ$C or 80$\sp\circ$C) significantly …
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