Results 91 to 100 of about 44,118 (256)
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
Vox Sanguinis, EarlyView.Abstract Blood transfusion is life‐saving for patients in emergencies, but low‐ and middle‐income countries (LMICs) often face a severe shortage of banked blood. Establishing blood banks in rural areas presents substantial logistical and economic challenges for many LMICs.
Suvro Sankha Datta +4 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
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
Hybrid geared traction transmissions [PDF]
, 1983 The basic configuration of geared traction drives, geometric and structural factors to be considered in their construction, and current work on hybrid helicopter transmissions rated at 500 and 3000 hp are ...
Nasvytis, A. L., White, G.
core +1 more source
The gate studies: Assessing the potential of future small general aviation turbine engines [PDF]
Four studies were completed that explore the opportunities for future General Aviation turbine engines (GATE) in the 150-1000 SHP class. These studies forecasted the potential impact of advanced technology turbine engines in the post-1988 market ...
Strack, W. C.
core +1 more source
Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)
Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki +5 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
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2019 To solve the fatigue resistance problems of gas turbine engine elements using the existing principles of regulation based on the use of safe load factors for various loading schemes we suggest exercising controlled influence upon the loading sources in ...
V. V. Chervonyuk, B. B. Korovin
doaj +1 more source
Bearing restoration by grinding [PDF]
A joint program was undertaken by the NASA Lewis Research Center and the Army Aviation Systems Command to restore by grinding those rolling-element bearings which are currently being discarded at aircraft engine and transmission overhaul.
Bull, H. L. +4 more
core +1 more source