Results 101 to 110 of about 891,158 (301)
, 2017 Majority of today's fixed-pitch, electric-power quadrotors have short flight endurance ($
Chen, B. M., Lin, F., Pang, T., Peng, K.
core +1 more source
Choice Feminism and the Opt‐Out Phenomenon: Is It Possible to Speak of Free Will?
Gender, Work &Organization, EarlyView.ABSTRACT The aim of this research was to question choice feminism in the light of the opt‐out phenomenon, through a thematic narrative analysis of the professional trajectories of five Brazilian women with university degrees. As a result of the research—and the main contribution to the advancement of knowledge in the field—it was found that although ...
Paula Furtado Hartmann de Queiroz Monteiro +3 more
wiley +1 more source
Helicopter far-field acoustic levels as a function of reduced main-rotor advancing blade-tip Mach number [PDF]
During the design of a helicopter, the weight, engine, rotor speed, and rotor geometry are given significant attention when considering the specific operations for which the helicopter will be used. However, the noise radiated from the helicopter and its
Lemasurier, Philip +2 more
core +1 more source
Journal of Fish Biology, EarlyView.Abstract Pink salmon originate from the North Pacific area but were introduced into northwest Russia from the late 1950s onwards. Since 2017, the alien species has increased dramatically in abundance and rapidly invaded adjacent areas of the North Atlantic region.
Jaakko Erkinaro +10 more
wiley +1 more source
SIMULATION AND OPTIMIZATION OF ULTRALIGHT HELICOPTER AERODYNAMIC CHARACTERISTICS
Advanced Engineering Research, 2012 The simulation and optimization of the ultralight helicopter aerodynamic characteristics at the design stages and phases which permit to determine optimal values of the engine power and speed are performed.
Viktor P. Zharov, Sergey P. Lisin
doaj
A helicopter handling-qualities study of the effects of engine response characteristics, height-control dynamics, and excess power on nap-of-the-Earth operations [PDF]
The helicopter configuration with an rpm-governed gas-turbine engine was examined. A wide range of engine response time, vehicle damping and sensitivity, and excess power levels was studied.
Corliss, L. D.
core +1 more source
That sinkin’ feeling: Environmentally induced distress on a disappearing island
Medical Anthropology Quarterly, EarlyView.Abstract Residents of Tangier Island, Virginia, a subsiding island in the Chesapeake Bay, embody psychosocial dimensions of environmental change. Analysis of ethnographic data shows islanders’ experiences and articulations of anxiety, panic, and despair as “that sinkin’ feeling,” resulting from the stress of living with the long‐term threat of imminent
Jonna Yarrington
wiley +1 more source
An economic comparison of three heavy lift airborne systems [PDF]
, 1975 Current state of art trends indicate that a 50-ton payload helicopter could be built by the end of the decade. However, alternative aircraft that employ LTA principles are shown to be more economically attractive, both in terms of investment and ...
Carson, B. H.
core +1 more source
Transfusion, EarlyView.Abstract Background Rapid access to surgical care has demonstrated a survival benefit in trauma. We sought to describe a state's trauma system with a single Level one trauma center. Study Design and Methods All available trauma encounters from 2015 to 2023 were classified as direct from scene and transfer cohorts.
Andrew D. Fisher +6 more
wiley +1 more source
SIMULATION AND OPTIMIZATION OF ULTRALIGHT HELICOPTER AERODYNAMIC CHARACTERISTICS
Вестник Донского государственного технического университета, 2018 The simulation and optimization of the ultralight helicopter aerodynamic characteristics at the design stages and phases which permit to determine optimal values of the engine power and speed are performed.
Viktor P. Zharov, Sergey P. Lisin
doaj