asteroza + 3   29

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
chaos/scrub: disk overwrite utility
Used by governments. Generally for civilians, DoD 3 pass should be good for conventional HDD's, but maybe not those new shingled/HAMMER drives.
data  erasure  scrub  cleaning  hard  drive  erase  DoD  3  pass  opensource  software  linux  sysadmin  tools  utilities 
february 2018 by asteroza
Lotus Range Extender Engine headed for market
I can understand the desire to reuse known technology, but wouldn't a microturbine be a better choice? I know someone was working on a wankel range extender as well, but wankels chew through rotor lube oil.
Lotus  PHEV  EV  range  extender  ICE  engine  motor  generator  3  three  cylinder  car  automotive  vehicle  technology  transportation  Delicious 
june 2010 by asteroza

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