|
|
|
|
|
Hamada Mohmed Abdelmotalib Ahmed, Byung-Guk Ahn and Jeekeun Lee
The current study addresses the effect of different designs of the exhaust mixer and aft-deck on the performance of a two-dimensional convergent nozzle represented by the internal and external flows and heat transfer process. The effect of different exha...
ver más
|
|
|
|
|
|
|
|
|
|
|
Bin Chang, Jie Huang and Wei-Xing Yao
In order to improve the thermal protection performance of the active thermal protection system (TPS) based on the spike and jet, an adjustable non-ablative thermal protection system, of which the spike can be rotated in the direction of the free stream, ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Penghui Li, Dong Yang, Zixuan Fang, Qingfei Fu and Lijun Yang
Gelled fuels have promising applications in the aerospace field. Higher density and calorific value can be achieved with the addition of energetic metal particles to gelled fuels, which can also effectively improve the combustion efficiency of the fuel a...
ver más
|
|
|
|
|
|
|
|
|
|
|
Pureum Kim and Sang-Young Park
This study investigates the preliminary trajectory design for high-thrust missions to near-Earth asteroids (NEAs), considering distance and phase angle constraints during the approaching phase to enable pre-rendezvous optical navigation and the scientifi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yanzhong Wang, Delong Dou and Xiaoyan Dong
The non-return mechanism is the key device that plays the role of braking in the opening-and-closing electric actuator of an amphibious aircraft hatch door. The ball-and-socket contact pair, providing the pressing force, and the multi-disc friction pair,...
ver más
|
|
|
|
|
|
|
|
|
|
|
John-Paul Mosele, Andreas Gross and John Slater
Shock wave boundary layer interactions are common to both supersonic and hypersonic inlet flows. Wall-resolved implicit large-eddy simulations of a canonical Mach 2.5 axisymmetric shock wave boundary layer interaction experiment at Glenn Research Center ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Simonetta D?Ercole, Tatiane Cristina Dotta, Giovanna Iezzi, Alessandro Cipollina, Vinicius Pedrazzi, Adriano Piattelli and Morena Petrini
This in vitro study aims to evaluate the bacterial microleakage of three conometric connections. Sixty dental implants (3P implafavourite Scalenghe) were divided in groups (n = 20): Cone?Morse with passing screw (Group 1); Cone?Morse with solid abutment ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Nikolay Makarov, Piero Papi, Vincenzo Santomauro, Gabriele Di Carlo, Antonella Polimeni, Bianca Di Murro and Matteo Saccucci
Background: Recently, intraoral scanning (IOS) has been proposed as a new tool to evaluate the accuracy of static computer-assisted implant surgery (s-CAIS); however, further research is needed to improve the precision of IOS for full-arch impressions. T...
ver más
|
|
|
|
|
|
|
|
|
|
|
Giannino Ponchio Camillo, Alexander Wagner, Takahiko Toki and Carlo Scalo
This work investigates a hypersonic turbulent boundary layer over a 7°" role="presentation">7°7°
7
°
half angle cone at a wall-to-total temperature ratio of 0.1, M∞=7.4" role="presentation">??8=7.4M8=7.4
M
8
=
7.4
and Re∞...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ibtihal Ahmed Alablani and Mohammed Amer Arafah
In Underwater Sensor Networks (UWSNs), the energy sources of sensor nodes are limited and difficult to recharge and solar energy cannot be used in that environment. The power issue is one of the most significant constraints in underwater sensor networks ...
ver más
|
|
|
|
|
|