asteroza + helicopter + rotor   13

Helicopter Could be 'Scout' for Mars Rovers
I would have expected larger rotors, more like one of those human powered helicopters. With the low pressure, you need hugely long rotors.
NASA  JPL  mars  coaxial  rotor  helicopter  space  research  technology  flight  aerospace  aviation  Delicious 
january 2015 by asteroza
Modlab » Archive » Underactuated Rotor for Simple Micro Air Vehicles
This appears to be a reimplementation the keyence revolutor mechanism for swashplateless rotor blade pitch control via motor pulse shifting.
offset  off  axis  hinge  rotor  blade  pitch  control  pulse  modulation  coaxial  underactuated  helicopter  multicopter  engineering  dynamics  keyence  revolutor  swashplateless  UAV  drone  research  technology  robotics  motor  Delicious 
december 2014 by asteroza
Sagita - Home
Looks like a semi-hot cycle helicopter, but instead of a potentially more complicated tip jet drive, it appears to use dual contra rotating direct drive turbines to spin the rotors, exhausting into the inter-disk area of the rotor hub. That exhaust choice is a bit odd though, but it might increase local air velocity over the blades.
rotor  direct  helicopter  aerospace  cycle  technology  turbine  semihot  coaxial  aviation  drive  hot  VTOL  Delicious 
june 2013 by asteroza
VTOL Technologies Ltd
Now if only they got together with Parrot to mix the AR.drone control software with this tilt duct flying wing quadcopter UAV
tilt  rotor  tiltrotor  duct  ducted  fan  flying  wing  quadrotor  quadcopter  helicopter  UAV  vehicle  aircraft  transportation  VTOL  quad  Delicious 
october 2010 by asteroza

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