asteroza + coaxial   20

New dual-propeller drone can fly twice as long
Ducted coax UAV, but not clear if using cyclic control
ducted  coaxial  multicopter  UAV  drone  research  technology 
july 2019 by asteroza
MIR | MIR is launching a new UAV design to automate rope access work
Interesting, using 2 xis gymbal for each rotor stack so have full 6 DoF all the time (aside from gymbal-lock scenarios). Should allow high agility, and potentially allowing the body to go vertical.
UAV  drone  quadcopter  multicopter  hardware  electronics  devices  coaxial  rotor  propeller  gymbal  6DoF 
april 2018 by asteroza
Cleo Robotics – Get a glimpse into the future
might have some coanda effect from the fuselage/duct lip?
coaxial  ducted  fan  UAV  drone 
february 2018 by asteroza
New patented tilted coaxial VTOL
Interesting coaxial monocopter UAV build, with the motor mount providing roll and pitch. I wonder how yaw is done with a single motor though?
coaxial  monocopter  helicopter  UAV  drone  FPV  hardware  electronics  devices  Delicious 
august 2015 by asteroza
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
The iPhone Controlled Ball Dropping Bomber - Hammacher Schlemmer
iStrike Shuttle, for when absolutely positively must need to drop ping pong balls on people with your iPhone...
gifts  devices  electronics  hardware  humor  attack  dropper  ball  bomber  helicopter  coaxial  RC  control  remote  iPad  iOS  iPhone  Delicious 
october 2012 by asteroza
Orbital Technologies Corporation - Propulsion, Space Resources and Energy Systems
Apparently working on a microwave electric thermal thruster using water as a plasma monopropellant. Sort of like VASIMR?
Orbitec  vortex  combustion  cold  wall  coaxial  reverse  microwave  electric  electrothermal  thermal  thruster  MET  space  propulsion  technology  research  plasma  water  monopropellant  propellant  fuel  liquid  VASIMR  Delicious 
october 2011 by asteroza

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