Transporte

Transporte

Metal fuels production for future long-distance transportation through the carbothermal reduction of MgO and Al2O3: A review of the solar processes
01/01/2022 - The need for sustainable zero-carbon fuels to substitute the conventional fossil fuels in the transport field becomes unavoidable to overcome the depletion of petroleum reserves and global...
Composited Film of Poly(3,4-ethylenedioxythiophene) and Graphene Oxide as Hole Transport Layer in Perovskite Solar Cells
11/11/2021 - It is important to lower the cost and stability of the organic–inorganic hybrid perovskite solar cells (PSCs) for industrial application. The commonly used hole transport materials (HTMs) such as...
Activation Energy of Deformation Processes in Polymer Textile Materials
09/11/2021 - Traditionally, prediction of functioning processes of uniaxially oriented polymeric materials faces objective difficulties due to inhomogeneity of the rheological structure of these materials....
The Control Algorithm and Experimentation of Coaxial Rotor Aircraft Trajectory Tracking Based on Backstepping Sliding Mode
- In view of the uncertainty of model parameters, the influence of external disturbances and sensor noise on the flight of coaxial rotor aircraft during autonomous flight, a robust backstepping sliding...
State Monitoring Method for Tool Wear in Aerospace Manufacturing Processes Based on a Convolutional Neural Network (CNN)
- In the aerospace manufacturing field, tool conditions are essential to ensure the production quality for aerospace parts and reduce processing failures. Therefore, it is extremely necessary to...
Nonlinear Ballistic Response of Quantum Spin Hall Edge States
- Topological edge states (TES) exhibit dissipationless transport, yet their dispersion has never been probed. Here we show that the nonlinear electrical response of ballistic TES ascertains the...
Multi-phase trajectory optimization of aerospace vehicle using sequential penalized convex relaxation
- This paper presents a novel methodology for solving the multi-phase trajectories of aerospace vehicles in the framework of convex optimization. As a result of the inherent non-smooth, non-linear,...
Learning prediction-correction guidance for impact time control
- This paper investigates the problem of impact-time-control and proposes a learning-based computational guidance algorithm to solve this problem. The proposed guidance algorithm is developed based...
PLD-VINS: RGBD visual-inertial SLAM with point and line features
- It is a big challenge for autonomous robots to estimate state efficiently and generate high-precision 3D maps under low texture indoor scenes. This paper proposes a visual-inertial simultaneous...
On integrated experimentation and simulation of a counter-turning swirling mixer, part I: Experimentation
- Success in developing advanced combustor concepts relies significantly on achieving rapid and uniform mixing of fuel with combustion air through a fuel/air preparation device called mixer. To...
Dual-layer optimization-based control allocation for a fixed-wing UAV
- Many existing control allocation methods separate the high-level control design from their low-level allocation design, assuming that the constraints of actuators can be guaranteed by the...
Global exponential angular velocity estimation of rigid-body spacecraft from quaternion and vector measurements
- Two observer-based angular velocity estimation approaches for rigid-body spacecraft are presented in this paper, where quaternion and direct vector measurements are respectively adopted as...
Comparison of different lobe-injectors on fuel mixing characteristics of single jet at the supersonic combustion chamber
- The successful operation of the scramjet engine considerably relies on the mixing performance of the fuel and air in the combustor where fuel has short residence time to mix with the supersonic...
Underactuated attitude reorientation method based on a novel decoupled characteristic of the plane-axis rotation
- Adequate understanding of rotational properties is significant for the orientation and control of solar energy, robotic, and spacecraft. This paper investigates a rotational decoupled...
Identify the spatially-correlated random fluctuating pressure on structure from strain data
- Distributed load information is essential for the design and monitoring of aerospace structures. A frequency domain method for the identification of correlated random fluctuating pressure is...
NTA-assisted mineral element and lead transportation in Eremochloa ophiuroides (Munro) Hack
06/11/2021 - Lead (Pb) is one of the most toxic and harmful pollutants to the environment and human health. Centipedegrass (Eremochloa ophiuroides (Munro) Hack.), an excellent ground cover plant for urban...
Research on Control of Stewart Platform Integrating Small Attitude Maneuver and Vibration Isolation for High-Precision Payloads on Spacecraft
- The Stewart platform, a classical mechanism proposed as the parallel operation apparatus of robots, is widely used for vibration isolation in various fields. In this paper, a design integrating both...
Sustainable Supersonic Fuel Flow Method: An Evolution of the Boeing Fuel Flow Method for Supersonic Aircraft Using Sustainable Aviation Fuels
- This paper discloses a new algorithm, called sustainable supersonic fuel flow method, to complement the conceptual design of future supersonic aircraft with pollutant and greenhouse gases emissions...
Novel Polyurethanes Based on Recycled Polyethylene Terephthalate: Synthesis, Characterization, and Formulation of Binders for Environmentally Responsible Rocket Propellants
05/11/2021 - Novel polyurethane-based binders, specifically designed for environmentally responsible rocket propellant composites, were obtained by employing the polyester-polyols that resulted from the...
Measurement of surface heat transfer caused by interaction of sonic jet and supersonic crossflow near injection hole
- This paper investigates the surface heat transfer caused by interaction of a jet and a supersonic crossflow near the jet injection hole. A sonic jet with different momentum ratios (J=0.510, 1.018,...