Results 121 to 130 of about 94,184 (315)

Failure in Motion: A Framework for Capability Erosion and Institutional Dysfunction

Strategic Change, EarlyView.
ABSTRACT Drawing on the literature on capability erosion and institutional dysfunction (ID), this study develops a conceptual framework that sheds new light on how the interaction between capability erosion and ID creates conditions for business failure across borders. By articulating two dimensions of heterogeneous capability and resource erosion (i.e.
Joseph Amankwah‐Amoah, Ahmed Adel Tantawy   +1 more
wiley   +1 more source

A Rapid Method of Integrated Aeropropulsive Analysis for the Conceptual Design of Airbreathing Hypersonic Aircraft

Aerospace
A special feature of airbreathing hypersonic aircraft is the complex coupling between aerodynamic and propulsive performances. This study presents a rapid analysis methodology for the integration of these two critical aspects in the conceptual design of ...
Yalin Dai, Zhouwei Fan, Jian Xu, You He, Xiongqing Yu   +4 more
doaj   +1 more source

Parametric study of transport aircraft systems cost and weight [PDF]

The results of a NASA study to develop production cost estimating relationships (CERs) and weight estimating relationships (WERs) for commercial and military transport aircraft at the system level are presented.
Beltramo, M. N., Kimoto, B. W., Marsh, D. P., Trapp, D. L.   +3 more
core   +1 more source

Impact and Post‐Impact Properties of Carbon Fiber Fabric Laminates Reinforced With Carbon Nanofibres

Polymer Composites, EarlyView.
Carbon nanofiber addition on the low‐velocity impact response of carbon fiber laminates. ABSTRACT The use of carbon fiber reinforced polymers (CFRPs) is limited by their susceptibility to low‐velocity impact (LVI) damage. This study investigates the effect of incorporating 0.75 wt.% carbon nanofibres (CNFs) into the epoxy matrix of carbon fiber fabric ...
Paulo Santos, Abílio P. Silva, Paulo N. B. Reis   +2 more
wiley   +1 more source

Conceptual Design of a Hydrogen-Hybrid Dual-Fuel Regional Aircraft Retrofit

Aerospace
A wide range of aircraft propulsion technologies is being investigated in current research to reduce the environmental impact of commercial aviation.
Ulrich Carsten Johannes Rischmüller, Alexandros Lessis, Patrick Egerer, Mirko Hornung   +3 more
doaj   +1 more source

Feasibility of Electrified Propulsion for Ultra-Efficient Commercial Aircraft Final Report [PDF]

MIT, Aurora Flight Sciences, and USC have collaborated to assess the feasibility of electric, hybridelectric, and turbo-electric propulsion for ultra-efficient commercial transportation.
Byahut, S., Courtin, C., Dowdle, A.P., Gonzalez, J.J., Greitzer, E.M., Hall, D.K., Hoburg, W.W., Kruger, M., Lang, J.H., Sabnis, J.S., Spakovszky, Z.S., Thalheimer, W., Trollinger, L., Tylko, J., Uranga, A., Varney, N., Yutko, B.   +16 more
core   +1 more source

The Role of Interfacial Shear Strength in Composite Performance

Polymer Composites, EarlyView.
Plasma‐modified fibre interfaces: effects on interfacial shear strength and composite fracture behaviour. ABSTRACT This study investigates the role of interfacial shear strength (ISS) in governing the mechanical behavior of fiber‐reinforced composites through an experimental approach.
G. Scarselli, N. Murphy, D. Dowling, P. S. Rao, N. P. O’Dowd, A. Ivankovic   +5 more
wiley   +1 more source

Conceptual design of single turbofan engine powered light aircraft [PDF]

The conceptual design of a four place single turbofan engine powered light aircraft was accomplished utilizing contemporary light aircraft conventional design techniques as a means of evaluating the NASA-Ames General Aviation Synthesis Program (GASP) as ...
Baisden, D. N., Heinrich, A. M., Snyder, F. S., Voorhees, C. G.   +3 more
core   +1 more source

Development of Vertical Wind Turbine Blades Using 4D Printing of Composites

Polymer Composites, EarlyView.
Vertical axis wind turbine: White blade: Commercial. Black blade: Composite. ABSTRACT This paper presents the procedure to make vertical wind turbine blades using the technique of 4D printing of composites (4DPC). The blades are made using carbon/epoxy composite materials with a fiber volume fraction of about 60%.
Emad Fakhimi, Suong Van Hoa
wiley   +1 more source

Parametric Geometry Modeling for Conceptual Design of Supersonic Tailless Combat Aircraft

Aerospace
The fully tailless configuration has lower observability, less structural weight and less drag, and it is considered one of the preferred designs for the next generation of efficient supersonic combat aircraft.
Jian Xu, Xiongqing Yu
doaj   +1 more source