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A combustible mixture is compressed in the crankcase of a four-stroke cycle engine and forced into a boost plenum which houses the camshaft. The compressed mixture is metered by a throttle to intake valves of the engine. The engine is constructed from identical engine block elements rotated and joined to enclose centrally disposed crankcase and common boost plenum with the cylinders horizontally o ...

APPLICATION OF BIOTECHNOLOGY TO THE PRODUCTION OF 4-HYDROXYBENZOCYCLOBUTENE WILL ALLOW BULK MANUFACTURE OF THIS POLYMER PRECURSOR BY MORE ECONOMICAL MEANS THAN IS CURRENTLY AVAILABLE. DEVELOPMENT OF SUCH A PROCESS WOULD ALLOW INDUSTRIAL APPLICATIONS OF BCB-BASED POLYMER MATERIALS.

SPACE STRUCTURES REQUIRE PROTECTION FROM DISASTEROUS IMPACTS OF METEOROID AND MAN-MADE SPACE DEBRIS POPULATIONS. LIMITATIONS ON EXPERIMENTS CREATES A NEED FOR A THEORETICALLY-SOUND BASIS FOR EXTRAPOLATION TO FASTER AND LARGER IMPACTING PARTICLES. THIS RESEARCH WILL DEVELOP THE THEORETICAL FOUNDATIONS FOR THE POWER-LAW SCALING RELATIONS COMMONLY USED. THE PRIMARY BASIS FOR THOSE FORMS IS A SINGLE S ...

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THIS PROJECT PROPOSES TO DEVELOP A TELEROBOTIC CONTROL GLOVE (TCG) FOR THE CONTROL OF ROBOTIC DEXTROUS HANDS. THE GLOVE WILL BE CAPABLE OF CONTROLLING BOTH THE POSITION OF AND THE FORCES EXERTED BY THE FINGERS OF THE ROBOTIC HAND. FEEDBACK OF BOTH TACTILE AND FORCE INFORMATION WILL BE PROVIDED TO THE OPERATOR. THE SYSTEM WILL BE EASILY INTEGRABLE WITH TELEROBOTIC ARM CONTROL SYSTEMS. THE TCG WILL ...

ORBITEC PROPOSES TO DEVELOP A MEANS TO PRODUCE AND UTILIZE SOLID OXIDIZERS IN A COMBUSTION CHAMBER. CONDENSION GASEOUS OXYGEN DIRECTLY TO THE SOLID STATE APPEARS AN INTRACTABLE APPROACH BECOUSE OF LOW DENSITY OF THE FROST FORMATION. RAPID FREEZING FROM THE LIQUID PHASE HOWEVER, ASSURES A DENSE, COHERENT SOLID PHASE FORMATION. TO SIMPLIFY DELIVERY TO THE COMBUSTION CHAMBER, WE PROPOSE TO USE THE CO ...

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CURRENT TREATMENTS OF METAL SURFACES FOR ADHESIVE BONDING ARE PRIMARILY BASED ON CHEMICAL PROCESSES. THE MAIN PROBLEM OF CHEMICAL PROCESSESS IS THE USE OF TOXIC OR HAZARDOUS MATERIALS, SUCH AS STRONG ACIDS, VOLATILE CHEMICALS AND CHROMATES. ANOTHER PROBLEM IS RELATED TO THE LOW THERMAL STABILITY OF THE ADHESIVE BOND DUE TO FORMATION OF HYDRATES IN THE CHEMICALLY GROWN OXIDE FILMS. THIS WORK WILL D ...

PROJECTILES LAUNCHED AT HYPERVELOCITIES AT THE BALLISTIC RANGES OF ARNOLD ENGINEERING DEVELOPMENT CENTER ARE SUBJECT TO EXTREME LOADS OF OVER 100,000 G'S AND OCCASIONALLY FAIL. THE ULTIMATE MATERIAL STRENGTH, IN PRACTICE, LIMITS THE MAXIMUM SPEED TO WHICH THE PROJECTILE CAN BE LAUNCHED AND STILL REMAIN INTACT. THE PROJECTILES ARE CONSTRUCTED FROM A VARIETY OF MATERIALS INCLUDING METALS, PLASTICS, ...