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Practical Application Limits of Fuel Cells and Batteries for Zero Emission Vessels
Uh, they only cover batteries or liquid/gaseous hydrogen PEM fuel cells in the comparison, so kinda incomplete. So no LNG fuel cells, no fuel cell/microturbine hybrids using the microturbine combustor as a topping cycle. Also, the basic conclusion is huge vessels could run a full trip, but on liquid hydrogen only, and short trip ferries should look at batteries instead.
sandia  fuelcell  cargo  ship  propulsion  research  marine  engineering  design  vessel  green  transportation 
18 days ago by asteroza
Phase Four wins NASA and commercial deals for electric propulsion system -
Formerly the CAT thruster guys, making the cubesat equivalent of a lowtech VASIMR plasma thruster, running on water or argon or xenon (in this case)
newspace  space  propulsion  cubesat  plasma  thruster  CAT 
25 days ago by asteroza
(U//FOUO) DIA Study: Warp Drive, Dark Energy, and the Manipulation of Extra Dimensions | Public Intelligence
DIA spent money to build up a wide ranging report covering theoretical FTL drives and their implications.
DIA  FTL  space  propulsion  research  warp  drive  dark  matter  energy  hyperdrive  Alcubierre 
28 days ago by asteroza
Development and Short-Range Testing of a 100 kW Side-Illuminated Millimeter-Wave Thermal Rocket
So Parkin and crew as part of the MTLS project got to phase 2, demoing a millimeter wave beamed thermal rocket launch. Some reports are 33kW received rather than 100kW though
microwave  millimeter  wave  beamed  thermal  propulsion  rocket  space  research  technology 
4 weeks ago by asteroza
Hybrid geared-fan and piston concept could slash fuel-burn
Like old combined cycle aviation diesel designs, this appears to be either a diamond D-16, or perhaps even a deltic triangular configuration. Difference is LP turbine drives geared turbofan, while pistons drive HP compressor with no HP turbine. Makes for a supercharged diesel turboprop of sorts.
general  aviation  propulsion  combined  cycle  diesel  engine  geared  turbofan  GTF  turboprop  supercharger  turbocharger 
5 weeks ago by asteroza
Modular spacecraft with integrated structural electrodynamic propulsion
Idea is if you have large enough structures (booms), then you can do some interesting attitude control and propulsion tricks
space  technology  research  spacecraft  attitude  control  propulsion  design  integrated  structure  boom  electrodynamic  tether 
6 weeks ago by asteroza
Development and Experimental Validation of a Hall Effect Thruster RAM-EP Concept
Air breathing electric hall thruster concept for low orbital altitude satellites to maintain speed. Not a PROFAC air scooper per se, since this uses all inlet air for thrust. Beehive inlet as well.
PROFAC  low  orbital  altitude  drag  compensation  air  breathing  hall  effect  electric  thruster  space  propulsion  aerodynamics  research  technology  ramscoop  beehive  inlet 
10 weeks ago by asteroza
Solar Thermal Propulsion for Small Spacecraft - Engineering System Development and Evaluation
Using fiber optics to simplify the arrangement between a solar concentrator rig and the actual solar thermal thruster
smallsat  small  spacecraft  space  propulsion  CSP  fiber  optic  solar  thermal  thruster  decoupled 
11 weeks ago by asteroza
A Breakthrough Propulsion Architecture | NASA
Thin film solar array/solar sail powered by a long range laser feeds a lithium ion thruster
NASA  NIAC  thin  film  solar  array  laser  beamed  propulsion  hybrid  electric  ion  thruster 
11 weeks ago by asteroza
PROCSIMA: Diffractionless Beamed Propulsion | NASA
Hybrid beamed propulsion rig, using favorable interactions between a neutral particle beam and a colinear laser to self focus and shepard the other.I wonder how applicable this is to conventional laser beam stuff (though the minimum beam strength probably stops anything less than a propulsion laser)
NASA  NIAC  beamed  propulsion  hybrid  neutral  particle  beam  laser  diffractionless 
11 weeks ago by asteroza
Apollo Fusion - Home
Some sort of hall thruster newspace startup, that wants to segway into fusion reactors?
space  propulsion  hall  effect  plasma  ion  thruster 
march 2018 by asteroza
Inverted Aerobaking - a possibly cheaper concept to launch space ships from earth
So, um, this is basically expecting to fire gas from the moon to ddrag a vacuum cehile to orbital speeds. So an extreme case of a wind sail...
inverted  inverse  aerobraking  space  propulsion  popup  launcher  wind  drag 
march 2018 by asteroza
Satellite extension services company, using secondary spacecraft to dock with existing sats to provide attitude control/station keeping. Basically an auxiliary propulsion pack. Currently not doing refueling/module replacement/power though
newspace  GEO  satellite  servicing  secondary  auxiliary  propulsion  attitude  control  space  service 
march 2018 by asteroza
So LEO propellant depots always have an alignment problem if using a single burn from the depot, making them unattractive. But if you can handle an extra few weeks (and a long duration upper stage), 3 burn departure basically fixes all the sins of a prop depot.
NASA  space  propulsion  propellant  depot  departure  orbit  design  3  burn  interplanetary  escape  LEO  navigation  astrogation  trajectory 
february 2018 by asteroza
New power generation and propulsion system for satellites | UC3M
Some sort of low work function aluminum tape, that emits electrons more easily in sunlight, appears to be the working principle behind this electrodynamic tether
space  propulsion  materials  science  research  technology  low  work  function  aluminum  tape  electrodynamic  tether  propellantless 
january 2018 by asteroza
Air-Breathing Electric Propulsion
So air PPT might be doable for a PROFAC thruster, but an inductively coupled plasma (AKA a helicon, the core of a VASIMR) is looking pretty good...
space  propulsion  PROFAC  atmosphere  air  electric  thruster  PPT  inductively  coupled  plasma  helicon  VASIMR 
january 2018 by asteroza
Aviation Renaissance: NASA Advances Concepts for Next-gen Aircraft | NASA
An aviation renaissance, one focused on energy efficiency and economic impact, is on the horizon, and it’s changing how NASA engineers are looking at aircraft power and design.
STARC-ABL  NASA  aviation  aerospace  BLI  boundary  layer  ingestion  turboelectric  electric  airplane  aircraft  propulsion 
november 2017 by asteroza
Tough SF: Liquid Rhenium Solar Thermal Rocket
Interesting solar thermal concept using a liquid primary heat receiver. Needs some work on the solar window end of the barrel design.
space  solar  thermal  propulsion  liquid  metal  heat  receiver 
october 2017 by asteroza
Neander Shark
Makers of an interesting diesel engine that features two conrods per piston for extreme smoothness. Now teamed up with Yanmar for a diesel outboard.
Yanmar  diesel  outboard  engine  marine  propulsion 
october 2017 by asteroza
Working an electric somewhat distributed propulsion general aviation aircraft. Sorta interesting design, sorta reminiscent of WingCo's BWB Atlantica
electric  distributed  propulsion  aircraft  airplane  general  aviation  research  technology  israel 
september 2017 by asteroza
Rocket motor concept could boost CubeSat missions
Somehow gasifying a solid fuel, which then is piped to and reacts with a solid oxidizer section
cubesat  space  propulsion  segregated  solid  fuel  oxidizer  thruster  rocket 
july 2017 by asteroza
Thrustme | Lets the small satellite space revolution begin
Uses a gridded ion thruster with solid iodine fuel, but fuel vacuum sublimation may put upper limits on lifetime? Though the size does look interesting for cubesats
grid  ion  thruster  cubesat  small  form  factor  space  propulsion  europe  france  EU  solid  iodine  fuel 
june 2017 by asteroza
First Breakthrough for Future Air-Breathing Magneto-Plasma Propulsion Systems - ...
pulse plasma engine working at 1 atmosphere, sorta PDE, looks interesting but needs high power (remote beaming?), so looking like something for airships for now.
dense  plasma  focus  ignition  discharge  pulse  detonation  engine  propulsion  air  breathing  aviation  aerospace  research  technology  PDE  Delicious 
may 2017 by asteroza
Wright Electric
Distributed electric propulsion research now backed by an airline
electric  airplane  aircraft  propulsion  general  aviation  research  technology  distributed 
march 2017 by asteroza
.: Energy Observer :.
Traction kite propulsion included, wonder if it's SkySails...
france  solar  hydrogen  ship  boat  yacht  vehicle  transportation  electric  traction  kite  sail  marine  engineering  propulsion  Delicious 
february 2017 by asteroza
Variable Element Launcher
Apparently Aerojet pulled some work from their dual mode ramjet work to demo a working TAN rocket nozzle, with LOx/LH2 with LOx/RP-1 TAN injection, for a working tripropellant setup.
aerojet  dual  fuel  TAN  tripropellant  LOx  LH2  RP-1  space  rocket  engine  propulsion  test  Delicious 
february 2017 by asteroza
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