Results 71 to 80 of about 351,466 (302)

Development of a stand for measuring thrust of micro-jet thrusters based on machine vision [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение"
In the presented work, the issues of measuring the thrust force of spacecraft thrusters are considered. A program for determining the thrust force based on machine vision has been developed.
V. V. Fedyanin   +3 more
doaj   +1 more source

Aerodynamics of thrust vectoring [PDF]

open access: yes
Thrust vectoring as a means to enhance maneuverability and aerodynamic performane of a tactical aircraft is discussed. This concept usually involves the installation of a multifunction nozzle.
Lan, C. Edward, Tseng, J. B.
core   +1 more source

Device measures reaction engine thrust vector deviations [PDF]

open access: yes, 1966
Gimbal mounted test device measures thrust vector deviation of reaction engines in terms of angular displacement and thus precludes force ...
Leonard, K., Shieber, H.
core   +1 more source

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou   +4 more
wiley   +1 more source

Large-scale static investigation of circulation-control-wing concepts applied to upper surface-blowing aircraft [PDF]

open access: yes
The use of a circulation control to deflect turbofan engine thrust beyond 90 deg. has been proven in full-scale static ground tests of the circulation-control-wing/upper-surface-blowing (CCW/USB) concept. This powered high-lift system employs a circular,
Englar, R. J.   +3 more
core   +1 more source

Tectonic evolution of a continental collision zone: A thermomechanical numerical model [PDF]

open access: yes, 2004
We model evolution of a continent-continent collision and draw some parallels with the tectonic evolution of the Himalaya. We use a large-scale visco-plasto-elastic thermomechanical model that has a free upper surface, accounts for erosion and deposition
Avouac, J.-P., Burov, E., Toussaint, G.
core  

Host‐Directed Biomaterials for Combatting Bloodstream Infections: From Macrocyclic Peptides to Immune‐Activating Cell Backpacks

open access: yesAdvanced Functional Materials, EarlyView.
Bloodstream infections (BSI) are one of the leading causes of mortality and morbidity in both civilian and military populations. This paper summarizes recent progress in novel treatment strategies to manage BSI arising from both bacterial and fungal pathogens using molecules, particles, and materials to elicit host‐directed immunity.
Thomas Thomou   +11 more
wiley   +1 more source

Design and Multi‐Objective Optimisation of Double‐Sided Flux‐Concentrating and Stacked‐Winding Permanent Magnet Linear Motor

open access: yesIET Electric Power Applications
Aiming at the problems of large normal force, large electromagnetic force pulsation and high cost of permanent magnet track of permanent magnet linear motor (PMLM), this paper proposes a novel double‐sided flux‐concentrating and stacked‐winding permanent
Ying Wang   +4 more
doaj   +1 more source

Experimental performance of a ventral nozzle with pitch and yaw vectoring capability for SSTOVL aircraft [PDF]

open access: yes
Aircraft with supersonic, short takeoff, and vertical landing capability were proposed to replace some of the current high-performance aircraft. Several of these configurations use a ventral nozzle in the lower fuselage, aft of the center of gravity, for
Esker, Barbara S., Mcardle, Jack G.
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

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