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3篇 您的检索式:作者名="Joseph Kalman"
    题名 作者 年代 出处 被引量
1A study of solid ramjet fuel containing boron–magnesium mixtures显示文摘Solid fuel ramjets (SFRJ) are known for their operational simplicity and high specific impulse. The performance of the SFRJ propulsion system is directly tied to the energy density and combustion behavior of the fuel. A typical solid fuel used in a ramjet application is a collection of metal particles suspended in a polymeric binder. Boron is the ubiquitous candidate when considering metal additives for fuels due to an impressive 122.5 kJ/cm3 energy density. However, boron requires long residence times in combustors due to its high melting and boiling points. Magnesium appears to be a natural complement to boron;while possessing a lower energy density (42.1 kJ/cm3), it burns with a high flame temperature and readily reacts in combustion with a low melting point. In this study, several HTPB–boron–magnesium fuels are studied on a small scale to evaluate performance for ramjet application. Holography experiments are conducted, as well as laser ignition tests, to study particle behavior just above the fuel surface. Small, center-perforated fuel grains are examined in a direct-connect SFRJ test stand configuration to measure ignition temperatures and performance parameters. Combustion efficiency of the HTPB–boron–magnesium fuel is found to significantly increase for one of the fuels studied.Eric T.Sandall Joseph Kalman John N.Quigley Scott Munro Trevor D.Hedman 2017Propulsion and Power Research2017,6,4:4
2Sensitivity and specificity of concealed entrainment for the identification of a critical isthmus in the atrium: relationship to rate, anatomic location and antidromic penetration显示文摘Joseph B Morton Prashanthan Sanders Vincent Deen Jithendra K Vohra Jonathan M Kalman 2002Journal of the American College of Cardiology2002,,5:1
3Electrical Remodeling of the Atria in Congestive Heart Failure: Electrophysiological and Electroanatomic Mapping in Humans显示文摘Prashanthan Sanders Joseph B. Morton Neil C. Davidson Steven J. Spence Jitendra K. Vohra Paul B. Sparks Jonathan M. Kalman 2003Circulation: Journal of the American Heart Association2003,,:1
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