Results 11 to 20 of about 4,749,326 (300)

Prediction of the aerodynamic performance of re-usable single stage to orbit vehicles [PDF]

open access: yes, 2011
Re-usable single stage to orbit launch vehicles promise to reduce the cost of access to space, but their success will be particularly reliant on accurate modelling of their aero-thermodynamic characteristics.
Maddock, Christie   +3 more
core   +3 more sources

Towards robust aero-thermodynamic predictions for re-usable single-stage to orbit vehicles [PDF]

open access: yes, 2012
Re-usable single stage to orbit launch vehicles promise to reduce the cost of access to space, but their success will be particularly reliant on accurate and robust modelling of their aero-thermodynamic characteristics.
Wuilbercq, Romain   +3 more
core   +4 more sources

Oriented vehicles travelling in spherical space [PDF]

open access: yes, 2009
This paper tackles the path planning problem for oriented vehicles travelling in the non-Euclidean 3-Dimensional space; spherical space S3. For such problem, the orientation of the vehicle is naturally represented by orthonormal frame bundle; the ...
Biggs, James   +5 more
core   +3 more sources

Robust multi-disciplinary design and optimisation of a reusable launch vehicle [PDF]

open access: yes, 2014
For various technical reasons, no fully reusable launch vehicle has ever been successfully constructed or operated. Nonetheless, a range of reusable hypersonic vehicles is currently being considered as a viable alternative to the expensive but more ...
Minisci, Edmondo   +4 more
core   +4 more sources

The Sliding-Aperture Transform and Its Applicability to Deep-Level Transient Spectroscopy

open access: yesApplied Sciences, 2022
A mathematical method is presented for the extraction of defect parameters from the multiexponential decays generated during deep-level transient spectroscopy experiments. Such transient phenomenon results from the ionization of charge trapped in defects
Walter R. Buchwald   +5 more
doaj   +1 more source

HF-induced airglow at magnetic zenith: theoretical considerations [PDF]

open access: yesAnnales Geophysicae, 2005
Observations of airglow at 630nm (red line) and 557.7nm (green line) during HF modification experiments at the High Frequency Active Auroral Research Program (HAARP) heating facility are analyzed.
E. V. Mishin, W. J. Burke, T. Pedersen
doaj   +1 more source

Review of Radiation-Induced Effects in Polyimide

open access: yesApplied Sciences, 2019
Polyimide (PI, Kapton-H®) films are widely utilized in the spacecraft industry for their insulating properties, mechanical durability, light weight, and chemical resistance to radiation.
Elena A. Plis   +5 more
doaj   +1 more source

Occurrence Characteristics of VHF Scintillation and Equatorial Spread F over Kwajalein during Moderate Solar Activity in 2012

open access: yesAtmosphere, 2023
The occurrence probability of equatorial plasma bubbles and the associated spread F (ESF) irregularities have been derived from ground-based and space-borne measurements.
Chao-Song Huang
doaj   +1 more source

Metal Matrix Composite Solar Cell Metallization

open access: yesE3S Web of Conferences, 2017
Advanced solar cells are moving to ever thinner formats in order to save mass and in some cases improve performance. As cells are thinned, the possibility that they may fracture or cleave due to mechanical stresses is increased. Fractures of the cell can
Wilt David M.   +9 more
doaj   +1 more source

Distributions of Ion Density Irregularities and Their Gradients Inside Low‐Latitude Ionospheric Plasma Bubbles Based on C/NOFS Planar Langmuir Probe Data

open access: yesSpace Weather, 2021
Data from the planar Langmuir probe onboard the Communication/Navigation Outage Forecasting System has been processed, with focus on the: (1) identification of Equatorial Plasma Bubbles located within the eclipse sections of the satellite orbits; (2 ...
Emanoel Costa   +2 more
doaj   +1 more source

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