Results 191 to 200 of about 1,531,293 (230)

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
exaly   +2 more sources

Restart transients of hybrid rocket engines.

Journal of Spacecraft and Rockets, 1973
Experimental investigation of the problems associated with restarting hybrid rocket motors (i.e., motors wherein a liquid or gaseous oxidizer is injected into the port of a solid fuel grain with subsequent mixing and combustion of the oxidizer and fuel) following a brief period of extinguishment. The results include the finding that the ignition delay
M. A. SARANIERO, L. H. CAVENY, M. SUMMERFIELD   +2 more
openaire   +1 more source

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.
openaire   +1 more source

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.
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Hybrid Rocket Engines Design for Materials Characterization

2023
Hybrid Rocket Engines (HREs) have generated positive interest in the scientific community due to their ability to combine the special characteristics pertaining to solid and liquid propulsion I [ 1]. Eligible as promising technology enablers for the future of space industry, HREs are valuable for their safe and controlled design nature, simplified ...
Mangioni G., Marocco R., Crispino G. M., Bianchi D., Mungiguerra S., Savino R.   +5 more
openaire   +2 more sources