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Topic: Diametric drive

Related Topics

Pitch drive

Bias drive

Breakthrough Propulsion Physics Program

Differential sail

Rocket propulsion

Tsiolkovsky rocket equation

Alcubierre drive

Momentum wheel

Gaseous fission reactor

Antimatter rocket

Solar thermal rocket

Tripropellant rocket

Hybrid rocket

Hungerford

Carthage, North Carolina

	Breakthrough Propulsion Physics Program - Wikipedia, the free encyclopedia
		Some examples include the Diametric drive, the Pitch drive, the Bias drive, the Alcubierre drive, the Disjunction drive, and the Differential sail.
		The pitch drive is a diametric drive which uses the principle of a disjoint field (as in the disjunction drive) to eliminate the need for the field to be generated on the spacecraft itself.
		The bias drive is a pitch drive that functions by altering the gravitational constant G in front of and behind the craft.
	en.wikipedia.org /wiki/Diametric_drive (530 words)

	Drive assembly having an improved sun gear mounting - Patent 4191073
		An output sprocket is carried on a first carrier of the drive assembly to be driven from the drive shaft by means of a gear assembly including a plurality of sun gears and planetary gears.
		It has heretofore been conventional to provide a drive gear assembly including a plurality of sun gears and planetary gears in the final drive of a vehicle, such as a tractor, wherein an input driver shaft driven by the vehicle engine is connected to an output sprocket for driving the track of the vehicle.
		The present invention comprehends an improved drive assembly wherein the second sun gear is rotatably carried by the housing and locked for rotation with the drive shaft by means permitting the second sun gear to move with the housing under the twisting loads applied thereto by the track.
	www.freepatentsonline.com /4191073.html (1760 words)

	Method of molding unitary roller of homogeneous material for tape cartridge - US Patent 5961905 (Site not responding. Last check: 2007-10-08)
		A drive roller for a belt-driven tape cartridge is molded of composite polymeric material in a single step to include outer segment and inner segment integrally formed together with a radial web segment between the outer and inner segments to provide highly concentric operating surfaces on the outer segment and in the inner segment.
		Electrical conductivity throughout the molded drive roller is provided by including in the composite material a quantity of carbon powder, and selective shrinkage of the composite material during cooling from molding temperatures provides desirable bearing surface within the inner bore through the inner segment.
		The drive roller thus serves as the intermediate coupling between a rotating capstan shaft or roller in a tape drive unit and the belt which then contacts the outer layers of tape moving between reels.
	www.patentstorm.us /patents/5961905.html (2496 words)

	Ship Drives and Propulsion (Site not responding. Last check: 2007-10-08)
		Reaction mass drives have functional characteristics determined by the exhaust velocity and the maximum mass-flow rate.
		The diametric drive has the drawback of needing highly detectable point sources ahead and behind the ship, making it unsuitable for stealthy approaches and maybe vulnerable to damage to the source generators.
		The bias drive can produce higher velocities with less accelerations, but the central singularity is hard to manage and might under certain circumstances become dangerously unstable.
	www.orionsarm.com /ships/propulsion.html (703 words)

	Drive mechanism having separable housing - Patent 4082156
		The drive mechanism of claim 1 wherein the brake assembly is carried by said second housing for removal as a unit therewith.
		The final drive disclosed therein includes a modular parking brake assembly detachably mounted between a hydrostatic drive motor and the speed reduction gear train which is operatively connected to the drive motor.
		The present invention comprehends an improved drive mechanism having a steering clutch assembly formed of a plurality of subassemblies, a brake assembly formed of a plurality of subassemblies, and a final drive assembly wherein a plurality of housings are removably secured to define a unitary housing for the mechanism.
	www.freepatentsonline.com /4082156.html (1742 words)

	Drive Sails
		The brief renaissance of drive sail ships in the Inner Sphere ended in tyeh early 2nd millenium, when the diametric drive became possible.
		Drive sails are usually visible on close range through bluish Cherenkov radiation from particles passing through their surface layer and into regions of Casimir vacua.
		Drive sails are sometimes confused with solar sails, but a drive sail is an active engine rather than a passive sail reflecting external directed energy.
	www.orionsarm.com /ships/drive_sail.html (652 words)

	Bearing arrangement for power drive - Patent 4067427
		In one conventional power drive assembly, a clutch is mounted to an input shaft and a brake is mounted to an output shaft, with the shafts being disposed in coaxial alignment.
		The present invention comprehends an improved power drive assembly having a spread-bearing means extending between the drive components carried by the input and output shafts for maintaning mutually coaxial parallelism of the drive components.
		In the exemplary embodiment of the invention as disclosed in the drawing, a power drive assembly generally designated 10 is shown to include an input shaft 11, an output shaft 12, a first housing 13, a second housing 14, and a case assembly 15.
	www.freepatentsonline.com /4067427.html (1020 words)

	OtherSpace Lexicon: Glossary
		The gravitic drive is sometimes colloquially referred to as the gravitric drive.
		Because of the law of conservation of momentum and energy, the forward velocity (directly related to kinetic energy) is directly proportional to the amount of energy in the form of electricity imparted on the graviton generator.
		The antimatter drive uses matter-antimatter annihilation to create a shower of subatomic particles that are ejected out the rear of the ship at relativistic speeds.
	web.wt.net /~dmqpw/htw/propulsion.html (1882 words)

	Bicycle drive sprocket system - Patent 4173154
		The drive mechanism described in claim 1, wherein said upper and lower pairs of sprockets are of a relatively large size and have overlapping peripheries.
		The drive mechanism described in claim 1, wherein said drive member is a sprocket engaging a chain leading to a ground engaging driven member.
		The drive sprocket 18 is also secured to the shaft 40 and transfers this force imparted to it from the sprockets 21 and 21' to the chain 17.
	freepatentsonline.com /4173154.html (2787 words)

	Space Drive
		The Diametric Drive works with field sources, the Pitch Drive with the field itself, the Bias Drive with the properties of the space that contain the field, and the Disjunction Drive with the properties of matter that create and react to a field.
		The diametric drive can also be considered analogous to creating a pressure source and sink in a space medium as suggested previously with the Induction Sail.
		In contrast to the diametric drive presented earlier, it is assumed that such a slope can be created without the presence of a pair of point sources.
	www.zamandayolculuk.com /cetinbal/SPACEDRIVE.HTM (5369 words)

	Bandwidth Market, Ltd (Site not responding. Last check: 2007-10-08)
		As defined in this article, a space drive is an idealized form of propulsion where the fundamental properties of matter and space time are used to create propulsive forces anywhere in space, without having to carry and expel a reaction mass.
		Millis is hypothetical field drives, of which four types, namely "diametric drive", "pitch drive", "bias drive" and "disjunction drive" are presented.
		By using a pair of parallel drive engines 26 and 28 employing charged particles rotating in opposite directions, the opposing torques applied through the engines to the cabin 20 of the space craft is canceled.
	www.telequipment.com /resources/patents/apps/2002/7/20020085661.html (4104 words)

	SPACECRAFT PROPULSION FACTS AND INFORMATION (Site not responding. Last check: 2007-10-08)
		Because the ion drive's needs much less fuel, the total launched mass is usually lower, which typically results in lower overall cost.
		Drives such as VASIMR, and to a lesser extent other Ion thrusters have exhaust velocities that can be enormously higher than this ideal, and thus end up powersource limited and give very low thrust.
		It turns out that to a reasonable approximation, for these drives, that fuel use, energetic efficiency and thrust are all inversely proportional to exhaust velocity.
	www.dontpayyourtaxes.com /Spacecraft_propulsion (3077 words)

	Diametric Drive (Site not responding. Last check: 2007-10-08)
		Standard drives use a modular design that allows the amount of negative matter to be tailored to the amount of positive mass aboard the ship.
		When the drive is engaged electromagnetic forces are used to pull the mass of negative matter toward the rear of the vessel.
		The Class Three Diametric Drive uses ultra dense positive and negative masses to permit a vessel to achieve high acceleration while still protecting its passengers and cargo from acceleration forces.
	www.orionsarm.com /ships/diametric_drive.html (748 words)

	NASA - Ideas Based On What We’d Like To Achieve
		In the case of the Alcubierre warp drive, this moving section of spacetime is created by expanding spacetime behind the ship (analogous to where the sidewalk emerges from underneath the floor), and by contracting spacetime in front of the ship (analogous to where the sidewalk goes back into the floor).
		A "space drive" can be defined as an idealized form of propulsion where the fundamental properties of matter and spacetime are used to create propulsive forces anywhere in space without having to carry and expel a reaction mass.
		Hypothetical Diametric Drive: This concept considers the possibility of creating a local gradient in a background scalar property of space (such as gravitational potential) by the juxtaposition of diametrically opposed field sources across the vehicle.
	www.nasa.gov /centers/glenn/research/warp/ideachev.html (1475 words)

	Double-helix zero insertion force connector system (US5154626)
		The receptacle is configured as a double-helix formed from a single length of wire which may be a stripped length of insulated hookup wire thus providing two integrally connected insulated leads for highly reliable external interconnections, which may include coaxial cables.
		The double-helix is formed into a diametric loop at one end of the double-helix, and the other end is constrained against rotation by a pair of leads emerging at diametrically opposite sides captured within conduit slots of a protective insulated casing.
		Alternatively part of all of the total contact pressure may be provided from an external torque source via the drive head and the loop, preferably including resilient linkage such as spring lever arms to maintain constant torque, and particularly in the case of multiple contact connector assemblies, to evenly distribute torque to multiple double-helix receptacles.
	www.delphion.com /details?pn=US05154626__ (242 words)

	T. I. Specialty - 1962 Through 1972 Tach Drive Distributor Restoration by Dave Fiedler
		GM used (38) different main shaft cams in tach drive distributors from 1962 to 1972.This cam is fundamental to the centrifugal advance curve because it determines the shape of the curve as well as controlling other functional characteristics (see article “All TI Distributors Are Not Equivalent” THE CORVETTE RESTORER Vol.
		Distributor housing where tach drive gear contacts the inside surface- The tach drive gear is heat-treated steel, which makes it very hard, unlike the cast iron housing which is relatively soft.
		Main shaft centerline to tach drive gear centerline problem- This is not a wear problem, but it is a condition that exists in an estimated ten percent of tach drive distributor housings.
	www.tispecialty.com /articles/article6.htm (2609 words)

	Real world star drives - Hero Games Discussion Index (Site not responding. Last check: 2007-10-08)
		The Diametric Drive, a generic version of a 1957 "negative mass propulsion" concept, uses the interaction of a positive and negative fiedl to propel the spacecraft.
		The FTL drive is a variant of the Alcubierre drive.
		Since warp drives are more efficient as one approaches the sun, most system defenses and sensors will concentrate around the center of the system.
	www.herogames.com /oldForum/StarHero/000014.html (4109 words)

	Burton Daniels' Home Page: Beyond Self Psychology: The "Apex" Paradox (Site not responding. Last check: 2007-10-08)
		Indeed, it is precisely because of the individual's direct contact and interaction with their significant others that Kohut conceived of the term selfobject, so as to indicate the inherently conjoined nature of the self and its objects.
		Each of the diametrics is reemphasized during the subsequent juvenile and adolescent periods.
		the first diametric tends to dominate the motivational side of Kohut's bipolar self, while the second diametric tends to dominate the morality side of Kohut's bipolar self, creating the impression that each diametric is the sum total of its given side of the structure.
	www.burtondaniels.com /beyond_self_psychology/apex_paradox.html (12079 words)

	Saga E-Zine: Behind the Stories: Lexicon: OtherSpace Archives
		Val Shohob: Homeworld of the Mystics, it was apparently destroyed by a supernova in 2651, triggered by the Gettysburg's OtherSpace Drive mishap near the star, Volshovir.
		When King Colin Neidermeyer tried to drive off the Maltarians in 3003, it sparked a conflict in which the Guardian Fleet used a coreseeker missile to decimate the Maltarian fleet - and the Maltarians used one of their weapons to destroy Ganymede.
		Diametric drive: A diametric drive uses negative matter to achieve propulsion without the need for a reaction mass.
	saga.jointhesaga.com /mt/archives/cat_lexicon_otherspace.html (21925 words)

	AR11 - Escape From Gravity By Jeanne Manning
		Inertia is the tendency of objects in motion to keep on moving in the same direction, and of a body at rest to remain on the sofa.
		A space drive would propel the perfect starship, it could use the fundamental properties of matter and space-time in order to whisk itself to anywhere in space without having to carry and expel an explosive fuel.
		The hypothetical field drives such as diametric drive, pitch drive, bias drive, disjunction drive and his collision sails are too technical for this article.
	www.atlantisrising.com /issue11/ar11gravity.html (2479 words)

	diametric drive
		One of the seven types of hypothetical space drives suggested by Marc Millis of the Breakthrough Propulsion Physics Program at NASA's Glenn Research Center (see Millis drives).
		A generic version of a 1957 negative mass propulsion concept, the diametric drive would somehow create an asymmetric field around itself.
		The interactions of the positive and negative field would then, it is conjecture, propel the spacecraft.
	www.daviddarling.info /encyclopedia/D/diametric_drive.html (140 words)

	The Facts About Interstellar Space - Bad Astronomy and Universe Today Forum (Site not responding. Last check: 2007-10-08)
		Hypothetical Induction Sail: Analogous to creating a pressure gradient in a fluid, the energy density of the impinging space radiation is raised behind the sail and lowered in front to create a net difference in radiation pressure across the sail.
		I also like the Diametric drive, which could produce thrust if only negative inertia were available (which in theory it might be, if negative energy is available in useful amounts).
		And the field densities would have to be enormous...however...even the case of permanent magnetic fields illustrates that it's possible to generate a spacetime distortion, vis-a-vis- the Diametric Drive...albeit a vanishingly small one.
	www.bautforum.com /showthread.php?t=16564 (2609 words)

	Tooling & Production - Nov 2000 - Product Spotlight
		The lathes offer a range of feeds--inch, metric, module, and diametric pitch threads can be cut by simply changing levers.
		The high torque 18-speed spindle is supported by precision taper roller bearings, and driven by a single speed drive motor equipped with and electromagnetic spindle brake.
		The AR servo offers absolute and incremental encoders supported by the amplifier and a built-in brake control function which is synchronized with the actuator's on/off functions.
	www.manufacturingcenter.com /tooling/archives/1100/1100ps.asp (817 words)

	Alcubierre-Warp Drive
		Let f be a function that is zero far from the warp loop and is at a maxima of one at (z = 0, r = R).
		Notice that in this spacetime there is no diametric nature to the space immediately behind and in front of the ship.
		The Van Den Broeck Warp Drive was actually a case of a more general type of Alcubierre-Broeck Warp Drive SpaceTime.
	www.zamandayolculuk.com /cetinbal/RelativityEinsteinwormhole.htm (617 words)

	Linux Forum: No Sound From CD Player - Linux Operating System Help
		Now days, most programs like Windows media Player, winamp, MS cdplayer etc etc etc actually read raw data from the drive and use your cpu to decode the audio data and send it to your sound card through the pci bus.
		Your pgram was sendng data through the little cable...which is probably not attached as most pc manufacturors assume you will be using an up to date version of windows.
		Hi diametric - don't know if you got your xmms working, but I was having the same prob and found the solution at xmms.org.
	www.linuxforum.com /forums/index.php?showtopic=9230 (1360 words)

	Electrical impedance tomography method and apparatus - Patent 5919142
		EIT involves the application of spaced electrodes to the skin surface of a body under investigation, usually in the form of a belt around the body such that the electrodes lie in the plane of the body to be investigated.
		In a typical biomedical EIT system, low voltage alternating electrical current is applied between two neighboring electrodes (known as a drive pair) and the resulting potentials measured between pairs (known as driven pairs) of all the remaining electrodes.
		It is to be noted that neither the drive pair nor the receive pair need to comprise two adjacent electrodes, and in some cases a diametric drive pair and/or receive pair may offer certain advantages for clinical measurements.
	www.freepatentsonline.com /5919142.html (3958 words)

	Distractions
		The only suggestions for Faster Than Light travel that appear to have scientific credibility (for very lenient values of "credibility") are Wormholes and the Alcubierre drive (original paper here), both of which rely on Exotic Matter (matter with negative mass).
		Exotic matter probably gives us reactionless drives as well, like the diametric drive (cool name).
		For an SFish treatment of these concepts, the Orion's Arm project has nice entries on Wormholes and Reactionless Drives.
	corky.net /dotan/log/2004/05/faster-than-light.html (127 words)

	A diamond hull will not be enough! - Forums powered by UBBThreads™ (Site not responding. Last check: 2007-10-08)
		Freeman Dyson's experiments with the Orion Drive 'put-put' pulse drive rockets showed that a pulse drive gives the pusher plate time to cool down between explosions; so perhaps the Daedalus concept could be made to work using an intermittent fusion reaction.
		But the key to interstellar missions is not to expect excessive speeds; it may never be possible to reach more than 10% cee, so we should concentrate on strategies for a very-long-term but relatively low mass mission.
		If such drive systems were possible, I have no doubt that ships far into the future could exceed 30% C. I’m sure we are all aware that such concepts are being given consideration by NASA (http://www.grc.nasa.gov/WWW/bpp/) even if they’re not being all that serious about it.
	uplink.space.com /showflat.php?Cat=&Board=sciastro&Number=44199&page=&view=&sb=&o=&fpart=4&vc=1 (1376 words)

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