asteroza + beamed   28

Two-Stage-to-Orbit Transporting System Combining Microwave Rocket and Microwave Thermal Rocket for Small Satellite Launch
Mirabo's air breathing laser lightcraft used lasers to ignite air plasma, this is proposing something similar using microwaves for a rocket booster stage, then beamed microwave thermal for the second stage.

Notable here is the determination that you can cheat the trajectory to favor a higher altitude initial vertical boost, take the gravity loss hit during a cold coast to the second beam director LoS, then have a longer second stage beamed thermal burn. Allegedly 3x payload compared to a UAV air drop launch to a single beam director site?

But how does a common microwave beam work here for first and second stages? Is the first beaming site only a pulsed microwave system? Does microwave PDE even work with continuous wave microwaves?
pulsejet  microwave  pulse  detonation  engine  PDE  rocket  thermal  beamed  propulsion  space  research  technology  japan 
december 2018 by asteroza
Polymath: Beamed propulsion doable now, and with it space solar power.
microLED's have parallel but non-coherent output, which may be servicable for use as a light beam source for beamed propulsion, aka laser launch
microLED  noncoherent  light  source  beamed  power  propulsion  space  research  technology  laser 
december 2018 by asteroza
Microwave Rocket Team | Komurasaki Lab., UT, Japan.
Looking at laser/microwave beam powered air breathing pulsejet propulsion, which may be attractive as an SRB booster replacement for ground launch.
airbreathing  pulsejet  ground  launch  microwave  laser  beamed  propulsion  research  technology  space  rocket  engine 
december 2018 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 
may 2018 by asteroza
NIMPH: Nano Icy Moons Propellant Harvester | NASA
This requires a beamed laser power system from orbiter to lander for ISRU ops
NASA  NIAC  laser  beamed  power  ISRU 
april 2018 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 
april 2018 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 
april 2018 by asteroza
Fission-activated laser as primary power for CW laser propulsion
This seems to go over the FALCON nuclear pumped laser reactor as a 10MW prototype for a laser thermal beamed power SSTO.
laser  thermal  beamed  power  SSTO  rocket  space  nuclear  pumped  reactor 
december 2017 by asteroza
EUEC 2014 talk.ppt - Google Drive
Interesting bootstrapping proposal for SPS, using a laser boosted Skylon with a dedicated laser beaming station in orbit. The difference is to cut down on the time to initial orbital beaming, rather than outfit a full SPS in orbit, commit to a ground station beaming microwave power up to a laser relay satellite, which in turn beams back a laser to Skylon. This changes the mass budgets such that you aren't hauling up solar panels for an ostensibly first pseudo SPS. The physics of microwaves means you can cheat and make a larger ground antenna to fire microwaves up, plus then you have electric fiber lasers, though the kicker is the huge radiator array to deal with waste heat from the lasers.
laser  beamed  propulsion  Skylon  relay  satellite  space  technology  research  bootstrapping  Delicious 
february 2014 by asteroza
20120002761_2012003334.pdf (application/pdf Object)
New review of beamed propulsion concepts by Nasa. Features a new laser thermal design with a offset heat exchanger plate "wing" on a conventional rocket design. Millimeter wave thermal rocket design resembles past spherical SSTO designs with a half cylinder wrap around heat exchanger. Note that the laser thermal one is sized for double the payload of the millimeter wave design. They also throw in a Myrabo lightcraft for comparison. Nice side design is a beamed power interorbital tug design that looks kinda workable (though the primary reflector/concentrator is a solid single piece design that is asymmetric, rather than a balanced twin reflector "butterfly" design, and the reflector isn't an expanding or inflatable type so it has to fit in the launch shroud)
NASA  beamed  energy  space  propulsion  research  technology  laser  milimeter  wave  thermal  rocket  lightcraft  orbital  tug  LEO  transfer  GEO  Delicious 
april 2012 by asteroza
NASA - NASA Announces Two Game-Changing Space Technology Projects
This contract had LaserMotive written all over it, but Escape Dynamics didn't get a piece. Which is strange since LaserMotive, is, well, all about lasers, while Escape Dynamics is all about microwaves.
NASA  beamed  power  propulsion  research  laser  microwave  space  technology  beaming  aerospace  Delicious 
september 2011 by asteroza
Appears these guys may already have chips in production to support this. Seems to use a rectenna for power receiving.
powercast  remote  beamed  power  transmission  technology  research  recharge  RF  energy  wireless  electricity  hardware  electronics  devices  rectenna  Delicious 
april 2007 by asteroza

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