Results 71 to 80 of about 38,554 (239)
A method for comparing the performance of power plants for vertical flight [PDF]
, 1952 A new method of power plant selection for vertical flight is proposed. It can be used to determine whether the performance of a rocket design can be improved by substituting for the rocket motor a different power plant such as a ramjet.
Tsien, H. S.
core +1 more source
Impact of Environmental Exposure on Infant Sleep : The Exposome Approach
Journal of Sleep Research, EarlyView.This review explores how exposure to environmental pollutants during the first 1000 days of life may affect infant sleep. Evidence suggests potential links between chemical exposures and sleep disturbances, underscoring the need for more research on early‐life vulnerability and the impact of pollutants in air, diet, and breast milk.
Zeina Halbouty +6 more
wiley +1 more source
Elements of cost comparison for planetary missions with advanced propulsion [PDF]
Cost and performance comparisons are made between chemical propulsion and nuclear electric propulsion for planetary missions at Jupiter and beyond. Nuclear rocket comparisons are made for performance only.
Stearns, J. W.
core +1 more source
Do deepfakes, digital replicas and human digital twins justify personality rights?
The Journal of World Intellectual Property, EarlyView.Abstract Unauthorised deepfakes are deeply problematic, from the spreading of misinformation to non‐consensual pornographic content. This paper asks whether deepfakes, digital replicas and human digital twins justify personality rights. To address this question, it examines the harms that deepfakes can cause through disinformation, demeaning content ...
Hayleigh Bosher
wiley +1 more source
Real-time fault diagnosis for propulsion systems [PDF]
Current research toward real time fault diagnosis for propulsion systems at NASA-Lewis is described. The research is being applied to both air breathing and rocket propulsion systems.
Delaat, John C. +3 more
core +1 more source
Studies in Ethnicity and Nationalism, EarlyView.ABSTRACT This article examines the Turkish state's Village Guard system, revived in the 1980s as part of its counterinsurgency strategy against the Kurdistan Workers Party (PKK). While often framed as a defensive militia, the Village Guards became central to the state's exceptional governance in Kurdistan, both facilitating military control and ...
Francis O'Connor +3 more
wiley +1 more source
Enhancing combustion performance of Al-H2O gelled propellants via polytetrafluoroethylene
Case Studies in Thermal EngineeringAluminum–water (Al-H2O) propellants are a novel class of solid propellants characterized by low cost and low signature observability. However, the inherently high aluminum content in these formulations often leads to severe agglomeration of aluminum (Al)
Songchen Yue +5 more
doaj +1 more source
Ion Propulsion for Spacecraft [PDF]
The theory of the ion-thruster propulsion system is discussed along with the Space Electric Rocket Test 1 and 2. The use of electric propulsion for stationkeeping and attitude control functions of geosynchronous satellites is described, and a comparison ...
Kerslake, W. R.
core +1 more source
Integrated launch and emergency vehicle system [PDF]
, 1992 A heavy launch vehicle is discussed. The launch vehicle is comprised of an expendable, multi-container, propellant tank that has a plurality of winged booster propulsion modules at one end and a payload supported by adapter structure at the other end ...
Martin, James A.
core +1 more source
Numerical Method for Chemical Non-Equilibrium Plume Radiation Characteristics of Solid Rocket Motors
AerospaceThe research objectives of engine plume radiation calculation primarily encompass two aspects: (1) addressing the additional heating induced by plume radiation on rocket thermal protection systems and (2) elucidating the variation patterns of spectral ...
Ruitao Zhang +5 more
doaj +1 more source