Hypersonic aircraft will need hypersonic engines. With that goal in mind, Ursa Major under a US Air Force Research Laboratory (AFRL) contract has conducted a series of hotfire tests of its ...
What is transdermal nitroglycerin used for? Transdermal nitroglycerin is commonly used to prevent chest pain caused by a type of heart disease (coronary artery disease). Transdermal nitroglycerin ...