Results 231 to 240 of about 1,322,041 (279)

Ballistic limit equations for spacecraft shielding

International Journal of Impact Engineering, 2001
This paper provides equations describing the ballistic performance capability of meteoroid/orbital debris (M/OD) shield systems employed on the International Space Station (ISS). Hypervelocity impact (HVI) tests and analysis were used in developing the semi-empirical ballistic limit equations (BLE).
Eric L Christiansen
exaly   +2 more sources

Ballistic Limit of Single and Layered Aluminium Plates

Strain, 2011
Abstract:  This paper presents an experimental and finite‐element investigation of ballistic limit of thin single and layered aluminium target plates. Blunt‐, ogive‐ and hemispherical‐nosed steel projectiles of 19 mm diameter were impacted on single and layered aluminium target plates of thicknesses 0.5, 0.71, 1.0, 1.5, 2.0, 2.5 and 3 mm with the help ...
Narinder Kumar Gupta
exaly   +2 more sources

Limitations to ballistic transport in semiconductors

IEEE Electron Device Letters, 1981
Limitations to the range of ballistic transport in semiconductors are discussed on the basis of electron correlation within an ensemble. It is shown that transport equations, correct in the fast transient regime, include these correlation effects.
D.K. Ferry, J. Zimmermann, P. Lugli, H. Grubin   +3 more
openaire   +1 more source

A model for carbon nanotube FETs in the ballistic limit

Microelectronics Journal, 2011
As we know, a ballistic MOS-Like carbon nanotube FET can be simulated by using a self-consistent procedure between the charge and the Poisson equations. Because of the integral form of the charge equation, this model cannot be implemented in the commercially available circuit simulators, such as SPICE.
Reza Yousefi, Mohammad Shabani
openaire   +2 more sources

Ballistic fractures — the limited value of existing classifications

Injury, 2005
We have assessed a number of ballistic fracture classifications but were unable to identify one that could adequately grade the severity of the injury, assist in determining the optimal treatment or predict outcome. Many of the existing classifications are based on experimental studies or radiological appearance and do not take into account the soft ...
P A E, Rosell, J C, Clasper
openaire   +2 more sources

Ballistic limit of aluminium tank: An experimental study

2014 IEEE International Conference on Control System, Computing and Engineering (ICCSCE 2014), 2014
This paper presents the details of experimental set-up to determine the ballistic limit for the aluminium tank for two cases, empty and water-filled tank. The experiment was carried out at Science and Technology Research Institute for Defense (STRIDE) Batu Arang. The aluminum tank was 3 mm thick, 150 mm wide and 750 mm long. At the end of the tank were
Mohd Rozaiman Aziz, Wahyu Kuntjoro, N. V. David   +2 more
openaire   +2 more sources

Carbon Nanotube Ballistic Thermal Conductance and Its Limits

Physical Review Letters, 2005
Calculations of the quantum-mechanical ballistic thermal conductance of single-walled carbon nanotubes, graphene, and graphite are presented, which explain previous experimental results, and directly disprove earlier theoretical calculations. The ballistic thermal conductances are smaller than had been previously thought, whereas the maximum sample ...
N, Mingo, D A, Broido
openaire   +2 more sources

Physical Limitations in Electron Ballistics*

Bell System Technical Journal, 1945
The subject of this talk is “Physical limitations in electron ballistics”. It is pleasant to have a chance to talk about such physical limitations, because there is so little we can do about them. And, although these limitations are apt to be discouraging, a knowledge of them is very valuable, for it keeps us from spending time trying, like the ...
openaire   +1 more source

A new Ballistic Limit Equation for thin tape tethers

Acta Astronautica, 2016
Abstract Electrodynamic tethers represent one of the possible means to de-orbit defunct satellites from Low-Earth-Orbit at end of life. However, tethers survivability to orbital debris impacts is still debated because of the large area they expose to the space environment.
FRANCESCONI, ALESSANDRO, GIACOMUZZO, CINZIA, BETTIOL, LAURA, LORENZINI, ENRICO   +3 more
openaire   +2 more sources

Modelling and simulation challenges for nanoscale MOSFETs in the ballistic limit

Solid-State Electronics, 2004
Abstract In this paper, we present the main issues and the modelling approaches for the simulation of nanoscale MOSFETs in which transport is dominated by ballistic electrons. We show that is indeed possible to compute in an accurate way the density of states in the channel in the case of quantum confinement without solving the complete two ...
CURATOLA G, FIORI, GIANLUCA, IANNACCONE, GIUSEPPE   +2 more
openaire   +2 more sources