Results 11 to 20 of about 1,531,293 (230)

Thermoacoustic instabilities in future hybrid rocket engines

open access: yes
This thesis investigates the thermoacoustic behaviour of the PB1–HX3 subsystem—comprising a preburner and heat exchanger—within SABRE (Synergetic Air-Breathing Rocket Engine), a single-stage-to-orbit propulsion concept by Reaction Engines Ltd. SABRE integrates advanced heat exchangers with conventional turbomachinery to operate in air-breathing and ...
Giraudi, Pietro
openaire   +2 more sources

On Soot and Its Environmental Impact in Hybrid Rocket Engines

open access: yesAerospace
Hybrid rocket engines (HREs) are increasingly considered for space transportation due to their inherent safety, cost-effectiveness, and operational flexibility.
Valerio Santolini, Christian Paravan
doaj   +2 more sources

HYBRID ROCKET ENGINE TEST FACILITY DESIGN

open access: yesHavacılık ve Uzay Teknolojileri Dergisi, 2016
Hybrid rocket engines is relatively less researched subject of chemical rockets. Using fuel and oxidizer in different phases hybrids are safe and cheap. Yet, they are not generating enogh thrust to deliver heavy payloads to edge of space.
Ali Emre Samur   +2 more
doaj   +1 more source

Sublimation of ice particles from rocket exhausts in the upper atmosphere [PDF]

open access: yes, 2003
The process of sublimation of ice particles from a rocket exhaust in the upper atmosphere is examined. Heating by solar radiation and losses of energy by means thermal radiation and sublimation are taken into account in the thermal balance of the ice ...
Kosch, Mike J., Platov, Y. V.
core   +4 more sources

Characterization of Advanced Hybrid Rocket Engines

open access: yes, 2015
In the last years, the discovery of high regression rate liquefying fuels has generated a renewed interest in hybrid propulsion systems due to some advantages in certain applications compared to solid or liquid rockets. The intrinsic safety, simplicity
Petrarolo, Anna   +2 more
openaire   +2 more sources

CD8+ T cell memory is sustained in mice by hepatic stellate cells

open access: yesHepatology, EarlyView., 2022
HSC role in memory CD8+ T cell maintenance. Abstract Background and Aims Long‐lasting immunological memory is the ultimate goal of vaccination. Homeostatic maintenance of memory CD8+ cytotoxic T cells (MemCD8TCs) is thought to be mediated by IL‐15/IL‐15R heterodimer (15HD)‐expressing myeloid cells.
Yi‐Ting Chen   +4 more
wiley   +1 more source

DESIGN FEATURES OF ENGINES WITH PULSED DETONATION CAMERAS

open access: yesАвіаційно-космічна техніка та технологія, 2020
The pressure of the products of chemical reactions in the chamber of a rocket engine increases significantly if the rocket fuel components burn in the detonation mode.
Олександр Євгенович Золотько   +4 more
doaj   +1 more source

Engine Use In Hybrid Rocket - A Review

open access: yesGraduate Research in Engineering and Technology, 2022
Despite all the other rocket motors on the market such as solid and liquid. A historically failed motor was in the market which was handicapped in performance but now with technological development in the previous years, hybrid rocket motor is the most influential talk in the market. Deeper in the paper we will discuss the hybrid motor focusing on the
Shantanu. U. Bayaskar   +2 more
openaire   +1 more source

Hybrid Rocket Engine Noise: Measurements and Predictions of Acoustic Environments from Horizontal Static Fire

open access: yesApplied Sciences, 2023
A rocket’s turbulent jet radiates intense acoustic waves, which are an acoustic load for structural components like payload, launch structure, and rocket avionics, and impact communities near the launch site.
Giovanni Fasulo   +4 more
doaj   +1 more source

Optimal Design of Electrically Fed Hybrid Mars Ascent Vehicle

open access: yesAerospace, 2021
The optimal design of the propulsion system for a potential Mars Ascent Vehicle is analyzed, in the context of the Mars Sample Return Mission. The Mars Ascent Vehicle has to perform an initial ascent phase from the surface and then circularize into a 170
Lorenzo Casalino   +2 more
doaj   +1 more source

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