Results 21 to 30 of about 31,818 (301)
Generative adversarial networks with physical evaluators for spray simulation of pintle injector
AIP Advances, 2021 Due to the adjustable geometry, pintle injectors are especially suitable for liquid rocket engines, which require a widely throttleable range. However, applying the conventional computational fluid dynamics approaches to simulate the complex spray ...
Hao Ma +3 more
doaj +1 more source
A Coupled Heat Transfer Calculation Strategy for Composite Cooling Liquid Rocket Engine
Aerospace, 2023 To better understand the characteristics of coupled heat transfer in liquid rocket engines, a calculation scheme is proposed in this paper. This scheme can simulate the coupled heat transfer processes, including combustion and flow in the thrust chamber,
Bo Xu +4 more
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Original Romanian Research for a Rocket Engine with Multiple Combustion Chambers during 1940 - 1944 [PDF]
INCAS Bulletin, 2020 The paper presents certain points of view regarding the history of Romanian rocket engines, during 1940-1944. Working independently of other scientists, during 1942 – 1944 the Romanian Nicolae Văideanu has invented and designed, independently of other ...
Nicolae-Florin ZAGANESCU +2 more
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Applied Sciences, 2022 This paper compares various optimization techniques and objective functions to obtain optimum rocket engine performances. This research proposes a modular optimization framework that provides an optimum design for Gas Generator (GG) and Staged Combustion
Suniya Sadullah Khan +5 more
doaj +1 more source
JAPANESE JOURNAL OF MULTIPHASE FLOW, 1997 PURPOSE:To boost propellant to a high pressure without using a subcombustor by reheating a part of the propellant heated by the heat of a combustor by using a heat exchange means in a nozzle part. CONSTITUTION:The liquid hydrogen as fuel and liquid oxygen as oxidizer are pressurized to each high pressure by boosters 3 and 4.
openaire +2 more sources
Effect of Secondary Combustion on Thrust Regulation of Gas Generator Cycle Rocket Engine
Applied Sciences, 2022 Thrust regulation is applied to maintain the performance of the liquid propellant rocket engine. The thrust level of a rocket engine can be readily controlled by adjusting the number of propellants introduced into the combustion chamber. In this study, a
Sohaib Khan +4 more
doaj +1 more source
Optimizing the Cooling System of an LH2/LOX Rocket Engine using the Bees Algorithm [PDF]
مکانیک هوافضا, 2023 Upgrading the thermal efficiency of the cooling system of liquid rocket engines is one of the most significant and intricate problems in designing modern rocket engines in the missile industry.
Navid Bozorgan
doaj
CrystalsA single batch of AlSi10Mg powder was used to fabricate two groups of round bars via horizontal printing, employing an identical strategy except for one parameter in the process of powder bed fusion-laser beam. The parameter is layer thickness, set at 50
Lu Liu, Shengnan Wang, Yifan Ma
doaj +1 more source
Advanced Science, EarlyView.Tracking physical impacts is important in many fields. Self‐assembled microparticles made from polydiacetylene and silk fibroin that change color from blue to red when hit can provide an alternative approach to traditional mechanical transducers, quantitatively visualizing impact with responses ranging from <100 to 770 N.
Marco Lo Presti +4 more
wiley +1 more source
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