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Analysis of a Lunar Sling Launcher
Geoffrey Landis PDF on a lunar surface sling launch system, feasibility, and performance. looks doable and can go places. If you can fire the sling towards a lunar frozen orbit (86 degrees) or similar, you could do fairly regular launches. Being a tether based sling makes it easier to pack up/deploy compared to a fixed mass driver complex. Wonder how well you could catch with one too...
moon  lunar  surface  sling  launch  launcher  space  research  tether 
3 days ago by asteroza
Pure lead cooled (not eutectic) uranium oxide reactor design, using new aluminum coating for the coolant systems
Sweden  uranium  oxide  lead  cooled  nuclear  reactor  power  generator  materials  science  research  technology  aluminum  surface  coating  metal  corrosion  resistance 
21 days ago by asteroza
Surface Mount Technology Components - SMT Components
Provides an intro to various types of SMT components, both passive and active. Examples of passive components are resistors, capacitors and coils. Examples of active components are SOIC, SSOP, TSSOP, SOJ. Chip-On-Board components are discussed. Various types of passive components have been compared.
smt  components  passive  soic  ssop  tssop  soj  chip  on  board  surface  mount  technology 
27 days ago by anandsoft
Surface Pen malfunctions after installing Win10 Fall Creators Update | Computerworld
Instead, it looks like there’s a bug in 1709 that makes “pinch to zoom” fail – or simply disables the pen as a whole.
surface  Microsoft 
5 weeks ago by jasonsamuels
Growth of solid conical structures during multistage drying of sessile poly(ethylene oxide) droplets - Physical Chemistry Chemical Physics (RSC Publishing)
Sessile droplets of aqueous poly(ethylene oxide) solution, with average molecular weight of 100 kDa, are monitored during evaporative drying at ambient conditions over a range of initial concentrations c0. For all droplets with c0 ≥ 3%, central conical structures, which can be hollow and nearly 50% taller than the initial droplet, are formed during a growth stage.

via nature retrospective on droplet surface drying
science  droplet  surface  drying 
6 weeks ago by madamim

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