Results 231 to 240 of about 20,111 (287)

Lock-in Amplification Enhanced Network: A Physics-Data Hybrid Strategy for Early Fault Diagnosis of Liquid Rocket Engine Turbopump Bearings

open access: green
Hongli Zhang   +9 more
openalex   +1 more source

The regolith rocket—A hybrid rocket using lunar resources

Acta Astronautica, 2021
Abstract The use of lunar hybrid rockets, that connect the Moon surface with a lunar gateway and provide it with resources, are evaluated. Therefore, the composition of lunar regolith and its use for specific rocket subsystems is assessed. In particular, this work evaluates the use of oxygen and aluminum from regolith as oxidant/fuel mixture as well ...
Stoll, Enrico   +4 more
openaire   +2 more sources

Hybrid rocket instability

29th Joint Propulsion Conference and Exhibit, 1993
The paper provides a brief review of theoretical and experimental studies concerned with hybrid rocket instability. The instabilities discussed include atomization and mixing instabilities, chuffing instabilities, pressure coupled combustion instabilities, and vortex shedding.
B. GREINER, R. FREDERICK, JR.
openaire   +1 more source

Analysis of hybrid rocket combustion

Acta Astronautica, 1980
Abstract The problem involving flow of a turbulent boundary layer with mass injection and combustion is studied to investigate the hydrid rocket combustion. Because of the presence of combustion, the momentum equation is coupled to the energy and species equations.
Cherng, D. L., Tao, C. C.
openaire   +1 more source

Hybrid rocket combustion study

29th Joint Propulsion Conference and Exhibit, 1993
The objectives of this study of 'pure' or 'classic' hybrids are to (1) extend our understanding of the boundary layer combustion process and the critical engineering parameters that define this process, (2) develop an up-to-date hybrid fuel combustion model, and (3) apply the model to correlate the regression rate and scaling properties of potential ...
L. STRAND, R. RAY, N. COHEN
openaire   +1 more source

Transient behavior in hybrid rockets

33rd Joint Propulsion Conference and Exhibit, 1997
The combustion dynamics in hybrid rockets is studied to provide a basic input into transient motor processes, such as ignition, throttling, thrust termination and instability. The model treats the time dependent heat flow into the fuel, with ablation at the surface. The gasification uses a single effective heat to account for surface processes, such as
M. Karabeyoglu   +3 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

Development of a Student Hybrid Rocket

48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2012
Nammo Raufoss AS with the support from Andoya Rocket Range has developed a novel small diameter hybrid rocket, the SHR110, for carrying student experiments and small payloads to 10km altitude approximately. The rocket engine is based on a nitrous oxide hybrid rocket motor providing an environmentally clean alternative to the surplus military rockets ...
Jan Erik Ronningen   +2 more
openaire   +1 more source

A Neural Network for Sensor Hybridization in Rocket Guidance

2020 Winter Simulation Conference (WSC), 2020
Improving accuracy is cornerstone for ballistic rockets. Using inertial navigation systems and Global Navigation Satellite Systems (GNSS), accuracy becomes independent of range. However, during the terminal phase of flight, when movement is governed by non-linear and highly changing forces and moments, guidance strategies based on these systems provoke
Raúl de Celis   +2 more
openaire   +1 more source

Home - About - Disclaimer - Privacy