Results 31 to 40 of about 29,759 (245)
Advanced Science, EarlyView.Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma +4 more
wiley +1 more source
Liquid Propulsion at IAE: Vision of the activities and future perspectives [PDF]
Journal of Aerospace Technology and Management, 2009 This paper presents the activities in the area of liquid propulsion, which received an effective boost at the end of the 90s. There is a consensus among specialists on the use of liquid propulsion in the next generation of satellite launcher vehicles in ...
Marco F. Carvalho Torres +4 more
doaj
Gravity‐Tolerant In‐Flight 3D Bioprinting Enabled by Stereolithography for Space Tissue Engineering
Advanced Science, EarlyView.A flight‐compliant, closed stereolithographic 3D bioprinting system enables robust fabrication of acellular and cell‐laden hydrogel constructs under varying gravitational conditions, including microgravity and hypergravity phases. Printed structures retain dimensional fidelity and high‐resolution features, while cell viability remains high ...
Bianca Lemke +8 more
wiley +1 more source
AIP Advances, 2022 The combined effects of radiative heat loss, curvature, and preferential diffusion on laminar non-premixed flames (or flamelets) are investigated in this work by using asymptotic analysis.
Yushan Gao +4 more
doaj +1 more source
Erosion of granular sediments by submerged impinging jets: Particle size effects and cohesion onset
AIChE Journal, EarlyView.Abstract This study investigates the erosion behavior and modeling of glass particle beds under impinging jet conditions, with a focus on particle size effects and the onset of cohesion. Ultrasonic profiling is implemented to scan and measure static crater profiles.
Ahmad Mohamadiyeh +4 more
wiley +1 more source
Performance Analysis of a Kerosene/Gaseous Oxygen Liquid Rocket Engine
Engineering ProceedingsOne of the most widely used rocket propulsion systems that uses liquid propellants is the liquid rocket engine. Due to their high density and specific impulse, liquid fuels and oxidizers are preferred.
Saravanan Ganesan +4 more
doaj +1 more source
Fault Diagnosis in Partially Observable Petri Nets with Quantum Bayesian Learning
Applied Sciences, 2023 This paper investigates the quantum Bayesian probability estimation of fault diagnosis based on Partially Observable Petri Nets (POPN) for a liquid-propellant rocket engine system.
Jiufu Liu +3 more
doaj +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT This study examines the economic consequences of Digital Technologies Disclosure (DTD), focusing on its impact on the cost of capital. The increasing significance of digital transformation in shaping corporate strategies and market perceptions motivates the study.
Hussein Mohsen Saber Ahmed +2 more
wiley +1 more source
Petri Nets Applied in Purge Algorithm Analysis for a Rocket Engine Test with Liquid Propellant
Aerospace, 2023 During the development stage of a space vehicle, instrumented tests are carried out on the ground to prove the operational capacity of each liquid-propellant rocket engine, which is installed in this type of vehicle.
Evandro Rostirolla Bortoloto +2 more
doaj +1 more source
Fluid thrust control system [PDF]
, 1968 A pure fluid thrust control system is described for a pump-fed, regeneratively cooled liquid propellant rocket engine. A proportional fluid amplifier and a bistable fluid amplifier control overshoot in the starting of the engine and take it to a ...
Howell, W. L. +2 more
core +1 more source