Performance Measurements of Direct Air Injection in a Cavity-Based Flameholder for a Supersonic Combustor
For several years the Air Force Research Lab Propulsion Directorate has been studying the difficulties in fueling supersonic combustion ramjet engines with hydrocarbon based fuels. Recent investigations have focused on the use of direct air injection into a directly-fueled cavity-based flameholder. Direct air injection has been shown qualitatively to be a valuable tool for improving cavity combustion. Little quantitative data is available that characterizes the performance of cavity-based flameholders. The objective of this research was to quantitatively determine the specific advantages and disadvantages of the direct air injection scheme. This was accomplished via intrusive probing into a supersonic free stream flow at an axial location behind the cavity flameholder. Pitot and static pressure, total temperature, and gas sampling measurements were taken and the corresponding values were processed to yield relevant engineering quantities. Data were taken over a range of fuel and air injection rates. Direct air injection resulted in increased combustion throughout the area of interest behind the cavity. Air injection increased the static temperature and pressure throughout the area of interest. Enthalpy spread into the free stream was also increased through the use of air injection. Total pressure losses increased as a result of the direct air injection scheme. The ratio of enthalpy increase to increase in total pressure losses increased with higher fuel flow rates, indicating that the direct air injection technique shows more promise for higher fuel loadings.
| yazar | Scott G. Edens |
|---|---|
| Boyutlar ve boyutlar | 18,9 x 0,6 x 24,6 cm |
| Tarafından yayınlandı | 2 Ekim 2012 |
HardPress Publishing 1 x 13,5 x 21 cm 31 Ağustos 2012 5 Ocak 2017 Kolektif 18,9 x 0,6 x 24,6 cm Icon Group International Collectif 21,6 x 0,2 x 27,9 cm 20,3 x 0,6 x 25,4 cm United States Congress 28 Şubat 2018 3 Ocak 2017 14.81 x 0.48 x 21.01 cm Babadada Gmbh 17.78 x 0.61 x 25.4 cm 30 Ekim 2011 4 Ocak 2017
okumak okumak kayıt olmadan
Sürüm ayrıntıları
| yazar | Scott G. Edens |
|---|---|
| isbn 10 | 1249578701 |
| isbn 13 | 978-1249578703 |
| Yayımcı | LIGHTNING SOURCE INC |
| Dilim | İngilizce |
| Boyutlar ve boyutlar | 18,9 x 0,6 x 24,6 cm |
| Tarafından yayınlandı Performance Measurements of Direct Air Injection in a Cavity-Based Flameholder for a Supersonic Combustor | 2 Ekim 2012 |
En son kitaplar
The Politics of Crisis Management: Public Leadership under Pressure
Siyaset ve Hükümet
okumak kayıt olmadan
Powell, L: Marcus Agrippa: Right-Hand Man of Caesar Augustus
Siyaset ve Hükümet
okumak kayıt olmadan
LA APOSTASÍA DE ESPAÑA: Del Régimen del 78 al Nuevo Orden Mundial (Dominio de R – Libros, Band 13)
Siyaset ve Hükümet
okumak kayıt olmadan
ABC-Rätsel: SingLiesel Kompakt. Kurze Geschichten für Senioren. Auch mit Demenz.: 23
Siyaset ve Hükümet
okumak kayıt olmadan
Trends und Determinanten sozialer Probleme in reichen Ländern: Eine Zeitreihenanalyse über drei Dekaden (BestMasters)
Siyaset ve Hükümet
okumak kayıt olmadan
benzer kitaplar
Yang 46: Election 2020 College Ruled Composition Notebook 7.44" x 9.69" 100 pages 50 sheets
okumak kayıt olmadan
Is the U.S. Navy Prepared to Conduct Peace Operations in Support of the National Security Strategy?
okumak kayıt olmadan
By Deploying Weapons in Space, Is the U.S. Opening a Theater of Engagement That Could Disadvantage the U.S. in the Long Term?
okumak kayıt olmadan
Yang 46: Election 2020 College Ruled Composition Notebook 7.44" x 9.69" 100 pages 50 sheets
okumak kayıt olmadan
Is the U.S. Navy Prepared to Conduct Peace Operations in Support of the National Security Strategy?
okumak kayıt olmadan
By Deploying Weapons in Space, Is the U.S. Opening a Theater of Engagement That Could Disadvantage the U.S. in the Long Term?
okumak kayıt olmadan
