Results 151 to 160 of about 439 (179)

Thrust modulation in hybrid rocket engines

Journal of Propulsion and Power, 1988
An experimental investigation of hybrid rocket engines (HRE) is performed to study the throttling performance within a thrust range of 10:1. In order to improve the throttling properties over the entire thrust range, the method of secondary gas injection (gasification) was used. The injection gases were reactive (O2) and inert (N2). High-pressure tests
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Hybrid Gas Generator for a Staged Hybrid Rocket Engine

Journal of Propulsion and Power, 2017
The two-stage combustion hybrid rocket engine with a hybrid gas generator method offers numerous advantages over a solid-propellant gas generator and classical hybrid rocket engines. These advantages include a higher specific impulse in operation, lower lifecycle costs, and lower sensitivity to combustion pressure.
Dongeun Lee, Changjin Lee
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Evaluation of Paraffin-based Fuels for Hybrid Rocket Engines

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2014
This paper summarizes the investigations on the combustion behavior of paraffin-based hybrid rocket fuels with gaseous oxygen (GOX) as oxidizer. Combined experimental activities have been done at the DLR Institute of Space Propulsion in Lampoldshausen and at the Space Propulsion Laboratory (SPLab) of Politecnico di Milano.
Kobald, Mario, Schmierer, C., Ciezki, Helmut, Schlechtriem, S., Toson, E., De Luca, T.   +5 more
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Optimal battery selection for hybrid rocket engine

AIP Conference Proceedings, 2022
In the present paper, the optimal selection of batteries for an electric pump -fed hybrid rocket engine is analyzed. A two -stage Mars Ascent Vehicle, suitable for the Mars Sample Return Mission, is considered as test case. A single engine is employed in the second stage, whereas the first stage uses a cluster of two engines.
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Hybrid Rocket Engines

2012
The hybrid rocket engine utilizes a combination of solid rocket and liquid rocket technology to meet some flight mission applications. In terms of performance, cost, availability of materials and safety, the hybrid approach does potentially have some advantages.
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Secondary combustion in a staged hybrid rocket engine

Journal of Mechanical Science and Technology, 2017
The staged Hybrid rocket engine (HRE) is a relatively new concept that minimizes a loss of combustion performance with an oxidizer to fuel ratio shifting, while maintaining the key advantages of HREs. Knowing that a key component of the staged HRE is the secondary combustion, in this study a reacting flow Computational fluid dynamics (CFD) based tool ...
Dongeun Lee, Changjin Lee
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Hybrid rocket engine

2019
Предлагается новый гибридный (комбинированный) ракетный двигатель, на который получен патент Украины («Спосіб комбінування реактивного і прямоточного повітряно-реактивного двигунів». 25.08.2015 ¹100987). Обсуждаются некоторые аспекты его конструкции и работы в сравнении с аналогами.
Semenov, К, Kopiyka, A
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Scalability and dynamic stability of hybrid rocket engines

Proceedings of 5th International Conference on Recent Advances in Space Technologies - RAST2011, 2011
This paper is divided in two parts. The purpose of the first part is to tackle the problem of geometrical scalability of hybrid rocket engines while the second part of the paper the stability of hybrid rocket motor is investigated using Liapunov theory.
Teodor Viorel Chelaru, Mingireanu Florin, Enache Vasile, Neagu Ion   +3 more
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The Stepped Helix Hybrid Rocket Engine

AIAA AVIATION 2023 Forum, 2023
Christopher Glaser, Jouke Hijlkema, Jean-Yves Lestrade, Jerome Anthoine   +3 more
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Optimal Robust Design of Hybrid Rocket Engines

2016
Hybrid rocket engines are flexible, safe, reliable, and low-cost and can be used in many aerospace applications. The engine design and operation are contingent on the type of designated mission and engine design is strictly related to trajectory optimization.
PASTRONE, Dario Giuseppe, CASALINO, LORENZO   +1 more
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