What are you using for for networking/on board computing? The article mentions 2G is used in China - however here in the US such services are being depricated [1].
Hey stevenrace, I'm Derrick, one of the co-founders of Spin. Given our roots in the US, we're building our bikes for the local market, and use different tech than the Chinese companies, for example, FCC-compliant devices or networks that are available in the US (3G and newer).
Since you are one of the co-founders you should be able to spend at least some effort on answering the actual question or explain why you would chose not to do so.
The resin has a low Tg (temp at which it turns goopy again) - somewhere around 500*F even for 'aerospace' stuff. Whereas recycling aluminum requires roughly double that temperature to begin to melt aluminum.
The carbon fiber is then chopped and used as reinforcement in other material likes plastics. SGL Group, who supplies/partners in production with BMW, even uses reclaimed and production waste in it's production process for the new 7-series.
>Nobody's bothered to try to figure out how to create a
small-scale EMP without a nuclear blast
Additionally the US DoD has an EMP weapon that comes in guided missile form via Raytheon/Boeing Phantom Works' CHAMP (publicly tested in 2012, confirmed in operation thereafter [1][2]) for taking out buildings, power grids, and such. It can be discharged 100 times per sortie.
Targeting power grids 'the old fashioned way' in Desert Storm, Lockheed F-117As dropped a cluster bomb full of carbon graphite filaments (BLU-114/B). This shorted out power lines/transformers and destroyed 85% of Iraq's power grid. Later used in Serbia and accidentally in SoCal during testing [3].
"The idea for these soft bombs apparently grew out of a training accident in souther California. Military aircraft were dropping chaff - hundres of metallic strips used to confuse enemy radar. An airplane released its chaff near a power switching station and many of the strips fell onto a power switching station, blacking out a large area of Orange County."
- Weapons of Mass Casualties and Terrorism Responce Handbook - Charles Stewart MD FACEP
To mitigate issues with cold weather, 2nd generation Nissan Leaf battery packs with the 'cold weather package' include a 'battery warmer' between banks. This is controlled via the BMS which was already monitoring temperature with some thermistors. It's a resistive element like that used in heated seats or an electric blanket.
The Tesla battery is a liquid cooled battery and thus can be warmed via coolant that is heated by the inductive heater for the HVAC. Same for the GM Volt/Bolt.
I was also wondering about two things I've heard they have in northern climes called heated garages and engine block warmers[1]. I assume if one were charging a batter one could also divert some power to keep it warm. Lowered range aside one bonus of an electric car in cold climates is they'll probably start.
[1] As a Californian these things frighten and confuse me.
> I assume if one were charging a batter one could also divert some power to keep it warm
The Tesla is always diverting power to keep the batteries warm in the winter. In fact, if you park it outdoors in freezing temperatures, and plug it in to an American single-phase 120V outlet using a long extension cord, all the power will go to keeping the batteries from freezing and it won't charge at all.
Kinda conundrum there, you want good thermal coupling to the environment to shed heat when the batteries are charging. When the car is sitting in the cold you want the batteries insulated.
The Mendelmax 3 & Fusematic from Makers Tool Works are built in the USA and sourced from US suppliers. The guy behind it has done more for the RepRap mechanical bits, aside from Joeseph Prusa.
The Lulzbot mentioned below was based on the Mendelmax 1.5. This line of printers moved RepRap from a threaded rod construction to extruded aluminum. Also the first to have linear rails instead of steel rod+linear bearings. The new Mendelmax3 is a mix of laser cut parts and extrusions - and has required less service than any of my printers to date.
While there isn't a specific section covering endnotes, they are interspersed sparingly as tonal changes in the narrator's voice. This effect is used in other readings of his works and is easy to follow.
While that was designed in 1984, the US DoD had successfully tested laser weapons over a decade earlier:
'The first was in 1973 when the USAF shot down a winged drone at their Sandia Optical Range, New Mexico, using a carbon dioxide GDL and a gimballed telescope. Subsequently, in 1976, the US Army employed an electrically pumped HEL to destroy a number of winged and helicopter drones at the Redstone Arsenal in Alabama. The USN, in March 1978, then engaged and destroyed an Army TOW missile in flight' [1]
The first targets destroyed from an airborne platform (KC-135) were in 1979.
The 'Waveglider' [1] by Liquid Robotics employs a variation of this. Tethered to a buoy on the surface, the main underwater vehicle is propelled forward by the wave's upward force acting on spring loaded foils.
FWIW the CERT ('US Computer Emergency Readiness Team') report on the 19th [1] delves a bit deeper into the exploit methods.
If you search for the MD5 hashes of the code you can find code snippets and incidents where such code was used in the past (hacking attempts at DHS, etc). Even though none of these were '0-days' or written by those with ties to NK, the attribution seems to be based on such code reuse.
[1] https://www.att.com/esupport/article.html#!/wireless/KM10848...