asteroza + pulsed   24

Transient Plasma Systems – Pulsed Power
Working on pulsed plasma alternatives to conventional sparkplugs
pulsed  plasma  ignition  research  technology  sparkplug  alternative  spark  automotive 
july 2019 by asteroza
On the Use of a Pulsed Nuclear Thermal Rocket for Interplanetary Travel | 52nd AIAA/SAE/ASEE Joint Propulsion Conference
Fission pulses do neutron heating of hydrogen propellant to plasma conditions, but you need to liquid metal cool the fuel. Neat result is propellant can get hotter than the fuel due to neutron flux. Though a NTER strikes me as easier to implement...
pulsed  nuclear  thermal  rocket  engine  space  propulsion  research  technology  fission 
october 2018 by asteroza
Transactions of the Symposium on Space Nuclear Power Systems, (5th) Held at Albuquerque, New Mexico on January 11, 1988. | National Technical Reports Library - NTIS
The PDF contains info on wheelguns, giant counterrotating flywheel hoops in space to supply power to SDI weapons, mainly railguns/particle accelerator cannons/free electron lasers that need huge amounts of power right now. Appears to expect to be trickle charged over time by a small space nuclear reactor (SNAP? atomic teakettle?). Also has an interesting microwave power beaming scenario from a nuke in mars synchronous orbit to a ground rover, high performance radiators, including a fabric heatpipe radiator, a curie point magnetic liquid droplet radiator, and other power conversion concepts.
SDI  wheelgun  space  counterrotating  flywheel  hoop  energy  storage  power  generator  FEL  free  electron  laser  railgun  neutraal  particle  accelerator  cannon  military  WPT  microwave  transmission  mars  MSO  rectenna  rotating  loop  pulsed  fabric  radiator  heat  thermal  management 
march 2018 by asteroza
Phys. Rev. Lett. 116, 185003 (2016) - Enhanced Multi-MeV Photon Emission by a Laser-Driven Electron Beam in a Self-Generated Magnetic Field
Laser pumped gamma ray synchrotron radiation beam emitter, firing a laser on a plastic target within a mag field, causing electron zigzag and thus gamma ray lasing within the result plasma for a terawatt level pulsed beam
laser  pumped  gamma  ray  pulsed  beam 
november 2017 by asteroza
GERA Technical Papers | GERA.co
Nuclear piston engine, using gaseous "fuel" and hydrogen gas moderator, with neutron reflector piston and cylinder. Uses piston top-dead-center compression effects and a "spark" (external neutron source, like an ADSR particle accelerator neutron spallation target, or some sort of cylinder wall embedded neutron source). Wonder if LiquidPiston reverse wankel would also work well here. Negative void coefficient is nice too.
nuclear  nanofuel  internal  engine  piston  reciprocating  plutonium  hexaflouride  hydrogen  gas  otto  cycle  wankel  rotary  power  generator  external  neutron  source  spark  ignition  ADSR  gaseous  pulse  pulsed  core 
june 2017 by asteroza
Recent Advances in Power Cycles Using Rotating Detonation Engines with Subcritical and Supercritical CO2
So rocketdyne has been doing interesting RDWE plasma assisted combustors, in this case intended for oxyfuel powerplants with CO2 capture
aerojet  rocketdyne  RDE  RWDE  PDE  rotating  wave  detonation  engine  pressure  rise  combustor  supercritical  CO2  combustion  cycle  oxyfuel  gas  turbine  research  technology  pulse  pulsed  plasma  assist  carbon  capture  Delicious 
november 2014 by asteroza
Space Propulsion « MSNW LLC
Interesting electric thrusters that have 500-3000 sec ISP with a variety of propellants, and is basically fuel agnostic (provided it is properly vaporized first). Water, CO2, nitrogen,hydrogen, it's all good (and some of those are ISRU resources too)
pulsed  electrodeless  electromagnetic  plasmoid  lorentz  force  thruster  space  electric  propulsion  research  technology  rocket  engine  ELF  EMPT  fuel  propellant  agnostic  Delicious 
may 2014 by asteroza
The Ghost Ship | Project Icarus Workshop Update #3/4 | Icarus Interstellar
Like a car engine that runs off it's own supercharger (which makes starting a bit of an issue...), this starship propulsion concept uses waste neutron pulses from the pulsed fusion reaction to neutron pump a nuclear pumped laser which fires for the next ICF fusion pulse.
ghost  ship  startship  project  icarus  space  propulsion  technology  research  pulsed  laser  intertial  confinement  deuterium  fusion  nuclear  pumped  BiS  Delicious 
may 2014 by asteroza
BNL Newsroom | Breakthrough Iron-based Superconductors Set New Performance Records
New high current/high magnetic field/high temperature superconductor that is iron based that beats the pants off of existing iron and cuperate superconductors. Demonstrated 1MA/cm2 critical current, 200KA/cm2 at 30T at 43K (not quite LN2 temps but close), and they think they can up the temperature by further tweaking the layering.
HTS  high  temperature  superconductor  iron  layered  composite  chalcogenide  thin  film  selenium  tellurium  pulsed  laser  deposition  cerium  oxide  materials  science  research  technology  Delicious 
january 2013 by asteroza
Microwave Weaponry, High Power (HPM) - HPM capabilities, HPM uses
Interesting anecdote about using carbon graphite coils as part of of a high powered microwave weapon. Though it claims they generate the EMP, so is it a single shot pulsed power supply then?
carbon  graphite  coil  pulsed  pulse  power  geenrator  EMP  HPM  DEW  military  weapons  research  Delicious 
october 2012 by asteroza
Laser_induced_fission_of_Th.pdf (application/pdf Object)
A variation on the accelerator driven thorium system theme, with a laser induced plasma pumping electrons into a tantalum target, dumping gamma (X-ray) into thorium. Rather than a traditional ADSR which fires electrons into a target for neutron spallation into thorium.
bremsstrahlung  radiation  photofission  thorium  xray  pulsed  laser  tartget  tantalum  fission  nuclear  physics  research  filetype:pdf  media:document  Delicious 
august 2011 by asteroza

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