ABSTRACT In-line poppet valves are used in fuel supply lines as on/off and metering valves. In certain instances, the fluid mechanic characteristics and dynamic behavior of such valves become extremely important. Such instances include the use of these valves in rocket engines' fuel lines, where it is critical that precise amounts of liquid oxygen and liquid hydrogen are introduced into the engine. To study the flow characteristics of these valves, various experiments were performed, and a summary of these tests and results are outlined in this paper.
