An Integrated Ignition and Combustion System for Liquid Propellant Micro Propulsion

2008 ◽  
Author(s):  
Richard A. Yetter ◽  
Vigor Yang ◽  
I. A. Aksay
Keyword(s):  
Combustion System ◽  
Liquid Propellant ◽  
Ignition And Combustion ◽  
Micro Propulsion

Experimental Study of Ignition and Combustion Characteristics of Mixed Rice Straw and Sewage Sludge Solid and Hollow Spherical Pellets in a Plasma Combustion System

2019 ◽  
Vol 797 ◽  
pp. 327-335 ◽  
Author(s):  
Mohamed E. Mostafa ◽  
Hao Tang ◽  
Jun Xu ◽  
Huan Ying Chi ◽  
Kai Xu ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Rice Straw ◽  
High Speed ◽  
High Surface ◽  
Combustion Process ◽  
Combustion Characteristics ◽  
Combustion System ◽  
Large Area ◽  
Char Combustion ◽  
Ignition And Combustion

In this work, the ignition and combustion characteristics of mixed rice straw and sewage sludge pellets in air atmosphere were investigated using a plasma combustion system. One common pellet shape (solid spherical pellet) and another new shape (hollow spherical) are used in this study. High-speed camera was used to record and observe ignition and combustion process of pellets. In case of hollow pellets, the shape and distribution of flame are found to be better compared to solid pellets. Also, it is clear that the values of volatile combustion times in case of hollow pellets are low compared to solid pellets. The overall heat transfer enhanced in case of hollow pellet due to the large area subjected to hot gases and the high surface to volume ratio. Hollow pellet consumed less time for internal ignition and volatiles char combustion compared to solid pellet. Volatiles and char combustion lasted for 63.05 and 61 s, respectively for hollow pellet while these values were found to be 72.8 and 83 s, respectively for solid pellet.

Investigation of Auto-Ignition of Heptane-CNG Mixture in HCCI Engine

2014 ◽  
Vol 695 ◽  
pp. 468-472
Author(s):  
Firmansyah ◽  
A. Rashid A. Aziz
Keyword(s):  
Combustion Process ◽  
Dual Fuel ◽  
Fuel Composition ◽  
Compression Ignition ◽  
Combustion System ◽  
Compressed Natural Gas ◽  
Hcci Combustion ◽  
Auto Ignition ◽  
Constant Volume Chamber ◽  
Ignition And Combustion

Homogeneous Charge Compression Ignition (HCCI) operating principals have been widely investigated yet the uncontrollable combustion of HCCI is the major obstacle in its development. This paper is trying to increase the understanding on the auto-ignition and combustion process of several fuels to be applied in HCCI combustion system. This paper investigates variation of fuel composition between heptane and compressed natural gas (CNG) with the composition ranges from 10-100% heptane/CNG. The investigation was done in a constant volume chamber with elevated temperature (800°C). Three lambdas were tested for each fuel, namely 0.8, 1, 1.2 and 2. From the results, it is found that the mixture composition highly affects the output of the combustion of dual fuel where CNG is able to suppress heptane combustion at CNG percentage more than 40%. Furthermore, homogeneity level highly determines the types of combustion produced by the mixture, distributed or propagation flame.

CORRECTION: "Liquid Propellant Handling, Transfer,and Storqage"

1956 ◽  
Vol 48 (7) ◽  
pp. 1189-1189
Author(s):  
P. Terrlizzi ◽  
Howard Strem
Keyword(s):  
Liquid Propellant
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