Extended temperature range rocket injector

A rocket injector is provided with multiple sets of manifolds for supplying propellants to injector elements. Sensors transmit the temperatures of the propellants to a suitable controller which is operably connnected to valves between these manifolds and propellant storage tanks. When cryogenic propellant temperatures are sensed, only a portion of the valves are opened to furnish propellants to some of the manifolds. When lower temperatures are sensed, additional valves are opened to furnish propellants to more of the manifolds

Increasing the Hardwood Content on the Furnish by Separate Refining

Introduction It is an old papermaker\u27s adage that paper is made in the beater. This means that the performance and the physical properties of the paper are determined by the type and the extent of the mechanical action to which the fibers are subjected before they are joined to form paper. The terms used to describe the function of refining; free beaten, wet beaten, et al are all traditionally vague, by reason of the complicated structure of the fibers and the even more complicated changes these fibers undergo during the refining process

The Effects of Fiber Furnish on Physical Properties of Paper

This experiment was designed to determine the effects of fiber furnish on the physical properties of paper. To do this various pulps and combinations of these pulps were formed into handsheets and their physical properties determined. The tests performed on the handsheets were tear, fold, tensile, stretch and tensile energy absorption. The findings of this report indicates possibilities of a linear relationship between percent of pulp in a sheet and the fold and tensile. Stretch values increase by various degrees as more of the higher stretch fiber is added. The TEA follows the stretch values very closely

Boydbolt, a positive-latch, simple-release fastener

Fastener /Boydbolt/ has recently been designed to furnish positive lock and release characteristics that positively prevent accidental adverse functions of lock or release

Improved Useage of Recycled Board in Corrugating Medium

Research was conducted to determine the optimum furnish of corrugating medium with the intentions of increasing the amount of recycled fiber in this furnish. Furnishes were made up of various ratios of a recycled fiber source to a virgin fiber source, along with three different levels of refining. A starch additive was also used on a second set of these groups to help increase some of the properties by increasing the interfiber bonding. The results indicated that increased recycled fiber produced the sheet with the optimum conditions. Also, with an addition of starch as a dry strength additive, the results improved even better than the non starch samples

Method of injecting fluid propellants into a rocket combustion chamber

A rocket injector is provided with multiple sets of manifolds for supplying propellants to injector elements. Sensors transmit the temperatures of the propellants to a suitable controller which is operably connected to valves between these manifolds and propellant storage tanks. Additional valves are opened to furnish propellants to more of the manifolds when cryogenic propellant temperatures are sensed. Only a portion of the valves are opened to furnish propellants to some of the manifolds when lower temperatures are sensed

Tension is servo controlled in film advance system

Servocontrol device feeds film into a roller system. Two linear potentiometers connected to spring loaded tension rollers furnish servo input signal. Can be used in any continuous material transport system