Prospects of sea launches for Chinese cryogenic liquid-fueled medium-lift launch vehicles

Song, Zhengyu; Xie, Zhifeng; Qiu, Limin; Xiang, Dalin; Li, Jinglin

doi:10.1016/j.cja.2020.06.018

Cited by 14 publications

(6 citation statements)

References 7 publications

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“…Similarly, the advancement of this combination is even observable in commercial sea launch technologies and projects. For example, the medium-lift Chinese rocket CZ-8A/RH 25) was launched at sea and contained a second core or upper stage process operating with LOX/LH2 engines, resulted in the improved feasibility and commercial value of launching cryogenic liquid-fuelled rockets at sea. These cryo-fuels (LOx and LH2) typically have a lower volumetric energy density than most other fuels, and being bulky, large volume tanks are necessary for accommodating these propellants, which significantly arises drag penalties.…”

Section: 1lox -Lh2 Propellant Combinationsmentioning

confidence: 99%

A Review on Advancements and Characteristics of Cryogenic Propulsion Rocket Engine

R¹,

Jeyan²

2023

Evergreen

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Future space exploration missions will require the synergistic integration of potentially lightweight, high thrust producing, and environmentally sustainable rocket engines. This article guides through one such capable rocket engine, the cryogenic propulsion rocket engine and some cutting-edge characteristics and novel engineering advancements affiliated with it. A typical cryogenic-propulsion rocket engine works similarly to all other LPRE's (Liquid Propellant Rocket Engines), in which the primary fluid (Cryogenic fuel 1) reacts chemically to get vaporized and get ignited by an oxidizer to provide extremely hot rocket thrust that escapes the engine nozzle and generates thrust from the combustion process. Considerable efforts have been made to optimize the engine's performance and reliability in order to utilize the most desirable output from it. Therefore, a brief overview of the different models and research approaches associated with it to provide predictions and results about the stability, dynamics, and cooling characteristics of the given engine configuration is presented.

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Section: 1lox -Lh2 Propellant Combinationsmentioning

confidence: 99%

A Review on Advancements and Characteristics of Cryogenic Propulsion Rocket Engine

R¹,

Jeyan²

2023

Evergreen

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“…Sea launch represents a highly efficient and economically viable launch mode, providing substantial flexibility in the selection of launch sites and splashdown regions [1,2]. It ensures the effective mitigation of safety hazards within the flight corridors and debris fields associated with launch vehicles [3].…”

Section: Introductionmentioning

confidence: 99%

Rolling Mechanism of Launch Vehicle during the Prelaunch Phase in Sea Launch

Wang,

Xiao,

Shao

et al. 2024

Aerospace

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During the sea launch of a launch vehicle in low sea state, a rolling phenomenon of the launch vehicle has been observed. In rough sea conditions, launch may failure. This study utilizes dimensionality reduction-driven spatial system projection methods and virtual prototype modeling technology to reveal that the launch vehicle’s rolling is caused by differences in the motion paths of the center of mass. Additionally, during the prelaunch stage, the variation in the trajectory of the launch vehicle’s center of mass caused by the rolling and pitching motions of the transportation vessel has a significant impact on the roll motion of the launch vehicle. The motion in other degrees of freedom has minimal influence on the launch vehicle’s rolling. The minimum rocket rolling occurs when the dynamic coefficient of friction of the launchpad–launch vehicle contact is 0.05, and the dynamic coefficient of friction of the adapters and guideways is 0.4. The conclusions provide a theoretical foundation for optimizing the sea launch system and enhancing the reliability of sea launch in rough sea conditions.

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“…China's Long March series of launch vehicles are also speeding up the upgrade to the intelligent direction. The Long March 8 (CZ-8), which made its first flight on 22 December 2020, can identify flight faults online in the taxiing section and autonomously reconfigure attitude control under specific fault conditions [16,17]. The solid-liquid "hybrid version" launch vehicle, the Long March No.…”

Section: Introductionmentioning

confidence: 99%

Research and Development of Fault Diagnosis Methods for Liquid Rocket Engines

Wang

Ding

2022

Aerospace

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Currently, considerable efforts are being focused on the development of reusable rockets and smart rockets due to the heavy requirements of future next-generation aerospace transportation. Safety, low-launching cost, and repeatability are expected from liquid rocket for fulfilling the big dreams of space transportation, exploration, and travelling. Therefore, research on fault detection of the liquid rocket engines (LRE) is critical for satisfying the above claims. Therefore, a comprehensive survey on the research and development of fault diagnosis systems and methods for the liquid rocket engines is presented. First, development history of liquid rocket engine diagnostic systems is reviewed thoroughly. Then three broad headings of the fault detection approaches of liquid rocket engines are divided through the summary and analysis of the existing methods, including approaches using signal processing, model-driven approach, and approach using artificial intelligence (AI). Then the paper discusses the concrete algorithms according to the classification features of the algorithms. In the end, the future developments of the fault detection approaches are presented, which will mainly pay attention to the reusability and intelligence of the rockets.

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Prospects of sea launches for Chinese cryogenic liquid-fueled medium-lift launch vehicles

Cited by 14 publications

References 7 publications

A Review on Advancements and Characteristics of Cryogenic Propulsion Rocket Engine

A Review on Advancements and Characteristics of Cryogenic Propulsion Rocket Engine

Rolling Mechanism of Launch Vehicle during the Prelaunch Phase in Sea Launch

Research and Development of Fault Diagnosis Methods for Liquid Rocket Engines

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