This is the MarkIII(k), a planetary gear created by K. Eric Drexler. A planetary gear couples
an input shaft via a sun gear to an output shaft through a set of planet gears (attached to the
output shaft by a planet carrier). The planet gears roll between the sun gear and a ring gear
on the inner surface of a casing. The animation below was produced from a NanoEngineer-1
molecular dynamics simulation. A section of the casing atoms have been hidden to expose
the internal gearing assembly.
Planetary gears are attractive targets for molecular modeling because (with careful choice of
planet numbers and sun- and ring-gear symmetries) the overall symmetry of the system virtually
guarantees low energy barriers along the desired motion coordinate. They also pack
considerable complexity into a small structure.
Planetary gears are common mechanical systems used for speed reduction (= torque
multiplication). Macroscale versions are found in automobile transmissions, electric screwdrivers,
and Mars landers.
The MarkIII(k) gear updates an early 1990s design by Drexler and Merkle, modified to reduce i
nteractions between the sun gear and the bases of the planet gears. The original version was
designed with very small moving parts in order to fit the computational constraints of the time.
The planet gears are near the lower limits of diameter for functional gear components, and because
of this, the "gear teeth" in this system are better thought of as smooth, low-amplitude corrugations
in the gear surfaces.
The single covalent (sigma) bonds linking each of the nine planet gears to the carrier gear are easily seen in this POV-Ray image.
This information is collected from the bellow website
http://www.nanoengineer-1.com/content/
Posted by Abhishek Kumar Jaishwal. Sunday, 2nd November 2104
This is the MarkIII(k), a planetary gear created by K. Eric Drexler. A planetary gear couples
an input shaft via a sun gear to an output shaft through a set of planet gears (attached to the
output shaft by a planet carrier). The planet gears roll between the sun gear and a ring gear
on the inner surface of a casing. The animation below was produced from a NanoEngineer-1
molecular dynamics simulation. A section of the casing atoms have been hidden to expose
the internal gearing assembly.
output shaft by a planet carrier). The planet gears roll between the sun gear and a ring gear
on the inner surface of a casing. The animation below was produced from a NanoEngineer-1
molecular dynamics simulation. A section of the casing atoms have been hidden to expose
the internal gearing assembly.
Planetary gears are attractive targets for molecular modeling because (with careful choice of
planet numbers and sun- and ring-gear symmetries) the overall symmetry of the system virtually
guarantees low energy barriers along the desired motion coordinate. They also pack
considerable complexity into a small structure.
planet numbers and sun- and ring-gear symmetries) the overall symmetry of the system virtually
guarantees low energy barriers along the desired motion coordinate. They also pack
considerable complexity into a small structure.
Planetary gears are common mechanical systems used for speed reduction (= torque
multiplication). Macroscale versions are found in automobile transmissions, electric screwdrivers,
and Mars landers.
multiplication). Macroscale versions are found in automobile transmissions, electric screwdrivers,
and Mars landers.
The MarkIII(k) gear updates an early 1990s design by Drexler and Merkle, modified to reduce i
nteractions between the sun gear and the bases of the planet gears. The original version was
designed with very small moving parts in order to fit the computational constraints of the time.
The planet gears are near the lower limits of diameter for functional gear components, and because
of this, the "gear teeth" in this system are better thought of as smooth, low-amplitude corrugations
in the gear surfaces.
nteractions between the sun gear and the bases of the planet gears. The original version was
designed with very small moving parts in order to fit the computational constraints of the time.
The planet gears are near the lower limits of diameter for functional gear components, and because
of this, the "gear teeth" in this system are better thought of as smooth, low-amplitude corrugations
in the gear surfaces.
The single covalent (sigma) bonds linking each of the nine planet gears to the carrier gear are easily seen in this POV-Ray image.
This information is collected from the bellow website
http://www.nanoengineer-1.com/content/
Posted by Abhishek Kumar Jaishwal. Sunday, 2nd November 2104
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