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Jan 18, 2009, 07:23 AM
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Pentarotor rides again


Made up a bolt-on penta rotor. It only takes 1 commute to convert between 4 & 5. The hardest part is rotating & realigning the IMU.

U might say it's payload on demand. U can't easily increase the payload of a unicopter without expanding the tail boom, but U can design a quad rotor to take bolt-on rotors.

Unfortunately, once again the penta rotor went nowhere fast. The longest flight was 4 min & that was with the battery always below the cutoff voltage for normal operations. GPS once again never locked, regardless of whether the ESC's were on. Suspect the carbon fiber arrangement is causing some kind of ground loop.

The connection of the 5th rotor did indeed wobble. The wobbling caused resonant oscillation with the rate controller. Spreading the weight more evenly between the 5 rotors may have increased flight time a hair. Now we're pretty sure the use of angled nacelles to defeat torque is sucking the power.

We can eliminate inefficiencies in inline propellers from the list of culprits in the penta rotor.
Last edited by Jack Crossfire; Jan 18, 2009 at 07:44 AM.
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