Synthesis of optimum structural designs for conical and tension shell Mars entry capsules
Structural design of conical and tension shells using sandwich structures
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Structural design of conical and tension shells using sandwich structures
Pressure distribution effects on shape of tension shell entry vehicles determined analytically and experimentally
High oxygen tension effect on transport and incorporation of exogenous leucine and protein synthesis in Pseudomonas saccharophila cells
Tension stress and shearing strain vs time for simultaneous stress relaxation and creep in polyurethane
Displacements and stress intensity as function of crack length for compact tension specimen, considering load line and crack edge
Tension stress and shearing strain vs time for simultaneous stress relaxation and creep in polyurethane
Effects of pressure distributions on bluff tension shell shapes
Effects of sonic booms and subsonic jet flyover noise on skeletal muscle tension and paced tracing task
Low speed wind tunnel tests of all-flexible twin-keel tension structure parawings
Longitudinal tension impact tests on nylon tape and Apollo pilot parachute riser construction, determining wave propagation effects
Apparatus for measuring load on cable under static or dynamic conditions comprising pulleys pivoting structure against restraint of tension strap
Effects of simulated sonic booms with high and low intensity vibrational components on tracking task performance and muscle tension in human subjects
Differential-maximum-bubble-pressure apparatus used for surface tension measurements in air of liquid lubricants to 200 C
Single edge notch tension Al alloy specimens mechanical compliance measurement, solving stress functions for various gage length-sample width combinations
Chronic hypoxia effects on blood oxygen and carbon dioxide tensions and pH changes in unanesthetized chickens at high altitude compared to sea level control
Simple tool for measuring relative cable tension is described, which weighs approximately two pounds, and can be produced at one-tenth cost of present tools.
Wiper assembly is described for feedback potentiometers which provides self cleaning, self lubrication, and tension within controlled limits. Each end of the assembly contains loose fitting leather pad thoroughly soaked in wiper lubricating fluid. Cleaning and lubrication of potentiometer resulting from use of lubrication soaked leather accomplishes noise free operation.
Discussion of the propellant management system requirements derived for the Viking 75 mission, and review of a series of surface tension propellant management system design concepts. The chosen concept is identified and its mission operation described. The ullage bubble and bulk liquid positioning characteristics are presented, along with propellant dynamic considerations entailed by thrust initiation/termination. Pressurization design considerations, required to assure minimum disturbance to the bulk propellant, are introduced as well as those of the tank ullage vent. Design provisions to assure liquid communication between tank ends are discussed. Results of a preliminary design study are presented, including mechanical testing requirements to assure structural integrity, propellant compatibility, and proper installation.