Engineering TV - All Comments

re: MAARS Robot - Part 1

Brian Huse — Thu, 05 Nov 2009 13:39:23 GMT

Interesting spotlight on developments in battlefield robotics and thinking behind the MAARS device.

re: Opposed Piston Opposed Cylinder Engine

Kasey — Wed, 04 Nov 2009 13:09:42 GMT

It may be able to be timed to let one set of con rods work at the point of ignition with more leverage than normal? as in the Scuderi S/C engine

re: EOS Laser Sintering Technology

Jack Dale — Sun, 01 Nov 2009 23:39:06 GMT

Dear Sirs: the sintering machine via laser, is SO COOL! I know Jay Leno (Entertainer, car builder/collector/restorer) uses some similar type of machine to build "un-obtainable" replacements to keep his almost 200 different cars running/maintained. Could parts as strong as forgings be made(--as in one-off small sets of rods used for race/other hi-performance IC-engines)? Why is there a limitation of only 10" or so in height? There might be applications where one wanted to do an engine-block that would have a height of way more than 10", yet would need a "one-off technology (--as in a marine diesil powering a cruise ship/oil tanker/military aircraft-carrier/cruiser/other?

re: Rollerized Engines

SSG. HillBilly — Sat, 31 Oct 2009 22:47:02 GMT

the lower the work load on the engine the less fuel it needs so less carbon production thus this would reduce maintainance DON'T LET THE OIL COMPANIES FOOL YOU THEY WANT AUTOS TO BURN AS MUCH FUEL AS POSSIBLE

re: Rollerized Engines

davetiye — Sat, 31 Oct 2009 08:10:19 GMT

güzel davetiye sözleri ve davetiye metinleri

re: SolarMagic Power Optimizer

Dale Whitworth — Thu, 29 Oct 2009 04:12:40 GMT

This is identical, I believe, to what "Inphase Technology" does with their microinverter. A friend has 24 panels on his roof; at times, clouds/trees/etc. will shade a panel or two and the whole string is degraded in performance. By selectively cutting out non-producing panels, the string's output is not effected. Remember, when one panel is dark, it begins to act like a resistor, causing a significant problem for the inverter. Also, a smaller inverter can be used since tolerances are easier to maintain, lowering the total cost for the system. These small "microinverters" usually cost about $100 - $200 dollars and are guaranteed for 10-15 years. I personally have not included solar panels in my "efficient" home as of yet because of the difficulty in panel placement and the extensive design choices that have to be made when calculating the panel size. One major point I see to these small units is this: a single panel can be added at a time, instead of requiring strings of 8-12 units or more. This alone is an attraction for most people. You simply add panels as money becomes available.

I believe these units are the single biggest advance to come along in solar electric design in a very long time and will greatly influence how quickly panels become commonplace on roofs across the country!

re: SolarMagic Power Optimizer

Dennis Finegan — Sat, 24 Oct 2009 06:16:47 GMT

But what is the efficiency loss. Like she said, you don't get something for nothing. Power loss from 100%?

re: GhostSwimmer AUV - Part 1

Steve Fleeman — Fri, 23 Oct 2009 02:38:55 GMT

Brilliant technology! While we all recognize the need to blow up the bad guys, I am also thinking the "ghostswimmer" could also be used to monitor undersea turbines as part of the overall alternative energy initiative.

Thanks for an outstanding report. I am a professor who welcomes this opportunity to inspire students. Cool!

re: Opposed Piston Opposed Cylinder Engine

john — Wed, 21 Oct 2009 00:45:48 GMT

This engine is alot different, it solves alot of problems of normal 2 strokes. First of all your tubo is going to be more efficent , exhaust port open and charge air ports closed. Next, you can pressurise the cyclinder with the intake charge. And most important, Low amount of ring drag. To get the same amount of power with a 4 stroke, the amount of dead piston movement would be measure in feet..Detroit diesel stated that on their engine that just .5 inches longer stroke would kill efficiency.

re: Zoombak Personal GPS Locator

cjo — Tue, 20 Oct 2009 16:34:47 GMT

I bought one to track my cheating spouse. It works great in real time locating. Cell phone alerts as to the vehicle leaving a designated area lags by 10-15 minutes at times. I use it with a separate passive system that records the track for permanent proof.

re: Commercial Solar Water Heating Systems

Building Materials Supplies — Fri, 16 Oct 2009 08:56:22 GMT

Commercial Solar Water Heating Systems

Thanks for sharing!

re: Opposed Piston Opposed Cylinder Engine

RiCarGuy — Thu, 15 Oct 2009 15:38:38 GMT

I remember sketching an opposed piston engine in my 7th grade school notebook. The whole powertrain would fit inside the track of a snowmobile. Ahh memories.

Mr_fluffi, you are an Obama supporter, aren't you? Just an innocent question.

re: A160T Hummingbird - Part 1

SMSgt Mac — Thu, 15 Oct 2009 07:45:59 GMT

It should be noted that while Boeing will be able to claim any future success of the features that make this a weapon 'system', nowhere in this piece is it noted that the key technology highlighted in Part 1 came from the mind of the brilliant Abe Karem, and that Boeing, to their credit, merely saw a good thing and bought the rights to use a great idea.

re: Soft Servo Motion Control and Robotic Hand

linear actuator — Mon, 12 Oct 2009 07:06:52 GMT

Actuators are really needed for complex tasks in the high power market.If the load requires accurate positioning, High power actuators has the advantage among others...

re: Solar Decathlon Refract House - Part 1

Elise Vagadori — Sun, 11 Oct 2009 17:33:24 GMT

I am so proud to be the Godmother of one of the young men working on this outstanding decathalon. His late Godfather (an Engineer also), would have been so proud......Great job Sean!