Results 41 to 50 of about 36,758 (316)
Small-body encounters using solar sail propulsion [PDF]
, 2004 Cometary Rendezvous and Flybys have large V requirements, which impose almost unattainable, and sometimes prohibitive, demands on the propellant budget of conventional, chemical propulsion.
Colin R. McInnes +6 more
core +1 more source
Zhongguo Jianchuan Yanjiu, 2022 ObjectivesAiming at the replacement of propellers behind surface ships with pumpjet propulsion systems, this paper introduces a novel method for predicting full-scale power performance based on statistical learning.
Qiongfang YANG +5 more
doaj +1 more source
Tailoring Laser Propulsion for Future Applications in Space [PDF]
, 2010 Pulsed laser propulsion may turn out as a low cost alternative for the transportation of small payloads in future. In recent years DLR investigated this technology with the goal of cheaply launching small satellites into low earth orbit (LEO) with ...
Eckel, Hans-Albert, Scharring, Stefan
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Background X‐linked adrenoleukodystrophy (X‐ALD) is a neurometabolic disorder caused by pathogenic variants in ABCD1, leading to slowly progressive spinal cord disease in nearly all affected men. Sensitive biomarkers to quantify disease severity and predict progression are needed for clinical care and trial design.
Eda G. Kabak +4 more
wiley +1 more source
Modelling & integration of advanced propulsion systems [PDF]
, 2008 This research study focuses on the design of advanced propulsion cycles, having as primary design goal the improvement on noise emissions and fuel consumption.
Doulgeris, Georgios C.
core
Performance prediction and design of wind-assisted propulsion systems [PDF]
, 2021 Wind-assisted propulsion is seen as one of the main alternatives to potentially achieve large emission reductions in shipping. However, wind-assisted propulsion introduces new challenges in the design, retrofitting and performance prediction as well as ...
Ringsberg, Jonas,, Thies, Fabian,
core
On the Effect of a Rudder on Propulsive Performance
Journal of the Society of Naval Architects of Japan, 1981 In designing a ship, it is important to estimate the effects of the propeller-rudder interaction, as the rudder behind a propeller has a great effect on the propulsive performance of a ship. This interaction problem has been treated theoretically by applying the thin wing theory to the rudder, and the hydrodynamical forces have been discussed.In this ...
openaire +2 more sources
A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems
International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam +2 more
wiley +1 more source
Kite dynamics for ship propulsion [PDF]
, 2013 Kite propulsion has emerged as an attractive means to harness wind power in a way that yields environmental and financial benefits. An understanding of the dynamics that affect kite motion and the resulting forces is required to facilitate the design and
Dadd, George M.
core
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source