Tuesday, March 8, 2011

CrazyEngineers Forum

CrazyEngineers Forum

PV/T system

Posted: 08 Mar 2011 01:49 PM PST

I need info on hybrid Photovoltaic/ Thermal system. someone please help me:confused:

Newtec’s FlexACM® Set To Take Centre Stage At SATELLITE2011

Posted: 08 Mar 2011 10:18 AM PST

Company will showcase technology that promotes end-to-end efficiency

WASHINGTON D.C., and SINT-NIKLAAS, Belgium, 8 March 2011. Newtec, a global industry leader shaping the future of satellite communications, will showcase its revolutionary, proven FlexACM® at the SATELLITE2011 show in Washington from 14-17 March. Newtec's FlexACM promotes end-to-end efficiency and is powered by new advanced technologies.

FlexACM enables satellite service providers and teleport operators to upgrade their legacy networks and the resulting bandwidth savings give operators the opportunity to either increase revenues by increasing their customer base, or reduce Operational Expenditure (OPEX) costs and increase the profitability of their business.

Serge Van Herck, CEO of Newtec, said: "At a time when budgets are being slashed and competition is high, satellite service providers are facing pressing challenges that they must address in order to be successful. Satellite services have become less competitive in comparison with terrestrial services in regions where those are already present. Therefore satellite service providers need to differentiate themselves." He continued: "Furthermore, they need to be profitable and OPEX must be kept at a minimum. Service providers must ensure that they can do more business with the same satellite capacity. They are looking for efficiency."

Newtec has responded to these challenges in an innovative way by creating FlexACM. Newtec's award-winning FlexACM solution is an advanced technology that provides auto-optimisation of satellite capacity through a one-stop, end-to-end solution for IP backbone and IP trunking networks. The solution utilises advanced technologies – ACM (Adaptive Coding Modulation), NoDE (Noise & Distortion Eliminator), Cross-Layer-Optimization and ThiMM (Thin Margin Manager). All can be used individually to optimize the satellite link. However, when combined, they further enable the user to get the very most out of the bandwidth available to them, doubling on average the throughput, pushing down costs and pushing up profitability.

Koen Willems, product marketing director at Newtec stated: "As a market trend, Newtec has identified the convergence of telecom, broadcast, government and trunking services towards IP. Newtec's FlexACM solution encapsulates all these market requirements for high and medium speed trunking networks over satellite. Moreover FlexACM has been implemented on multiple satellite links towards rain fade sensitive areas, on inclined orbit satellites and in satellite networks driving for optimal efficiency."

Willems added: "Additionally, Newtec brings fixed rates to ACM. We address the service providers point-to-multipoint configurations by providing constant throughput at optimal availability in the most efficient way. End-to-End."

Visitors to the SATELLITE2011 can find out more about FlexACM by visiting Newtec at booth 511.

Engineering Project Help

Posted: 08 Mar 2011 09:09 AM PST

Hello,
I am a high school senior working on my CAPSTONE project.
What I'm thinking of doing is a LED ANALOG CLOCK, or anything else involved with LED.
Can anybody give me tutorials on how to make them or offer me any other ideas?
Any help would be highly appreciated.
Thank you!

Google Chrome 10 Released. Download It Now!

Posted: 08 Mar 2011 09:04 AM PST

Google has finally took the browser out of Beta. THe new browser is faster, has new UI for settings page and sync facility across various mobile devices.

Check out our coverage here: Update: Google Chrome 10 Released. 66% JavaScript Performance Boost - CrazyEngineers

For those who waste their food at home

Posted: 08 Mar 2011 08:30 AM PST

Do watch this video and place yourself in place of parvesh

This is one of the best scene i liked too much

Pulsed Lasers for Coherent Energy Projectile

Posted: 08 Mar 2011 08:00 AM PST

Hi all Im new to this forum and am interested in mechanical engineering with a focus on projectile acceleration/Directed Energy weapons
I was conducting a thought experiment to reproduce the APPEARANCE not funtion(as of yet) of a coherent energy projectile, i.e, a phaser or laser burst. I have been researching slow light propagation and reduction in speed through pulsing lasers and partial cancellation.
I was wondering if it is possible to combine several individual light waves in a way that a single wave packet is formed and travels at a speed observable to the eye (on the order of 100-1000m/s) without the use of temperatures near 0K. Could a device be built that sends a pulse of light down a beam(of smaller amplitude as to pronounce the effect of the pulse), in a star wars style laser blast?

Need Help On Software Engineering

Posted: 08 Mar 2011 07:13 AM PST

I want to learn Software Engineering. I tried Software Enginnering By Roger Pressman. But it is very vast, could you suggest me some web resources that are precise and small.

ITrix - 2011

Posted: 08 Mar 2011 07:01 AM PST

ITrix - 2011
March 28 - 29
Department of Information Science and Technology
College of Engineering Guindy, Anna university


About
The Information Science and Technology Association (ISTA) is honored to present ITrix, the annual technical fest of the Department of Information Science and Technology (DIST), College of Engineering Guindy, Anna University, Chennai. ITrix has every ingredients of a successful symposium with fascinating and novel events, thought provoking workshops adding to the flavor. To more details visit ITrix 2011 : The National Technical Festival of Department of Information Science and Technology, Anna University Chennai.

Quote:
"One small step for man, one giant leap for mankind" - Neil Armstrong
The Information Science and Technology Association (ISTA) is a closely knit group of individuals working together to propel the Department of Information Science and Technology (DIST) into limelight. To trace the lineage of ISTA you need not go deep into history! ISTA was officially formed on January 2011.ISTA believes that the history is trivial and only the determination to achieve will truly result in success. So what has this got to do with ITrix?

ISTA's first attempt to unify the DIST and to make a mark in history of College of Engineering, Guindy is the symposium which has been christened ITrix. ITrix being one among the newly conceived symposiums strives to distinguish its events from the traditional array of events. ITrix 11 being the first edition of ITrix is going to be an enigma to most students since most events of ITrix are going to be a surprise. The fact that ITrix 11 will serve as a benchmark for forthcoming editions rests on the minds of the ISTA and hence ITrix 11 has been made as enchanting as possible. Enough with the introduction! Go ahead and leap into the world of ITrix.

Samsung Corby II Review

Posted: 08 Mar 2011 06:59 AM PST

Samsung Corby II has been launched in SEA Forum at Singapore. The phone banks on the success of Corby series. Check our coverage: Samsung Corby II GT-S3850 Tech Specs, Review & Price In India - CrazyEngineers

Proscenium 2011 @ ait, delhi

Posted: 08 Mar 2011 06:36 AM PST

IEEE-AIT (student branch of IEEE) presents.......
PROSCENIUM-2011........
the theater of war,is now open.....
and this time...its GREEN....March 11-13th, 2011
one of the most watched out technical Festival in the city is back....
loads of prizes to be won..Robotics....Quizzes...LAN gaming...and much more.....
lots of money at stake....participate enthusiastically....
for more details, please visit:
http://proscenium.ieeeait.com

Ashish Sharma :cean:
ashish.sharma@ieee.org
Ambedkar Institute of Technology,
GOVT. of NCT of Delhi
http://ait.delhigovt.nic.in

Tejj cycle

Posted: 08 Mar 2011 05:46 AM PST

I HAVE DEVELOPED NEW DRIVING MECHANISM FOR BICYCLE/RICKSHAW HAVING FOLLOWING ADVANTAGES OVER CONVENTIONAL SYSTEM.

I AM READY TO SELL THE INVENTION ALONG WITH PATENT RIGHTS / COMMERCIAL DEVELOPMENT & SELLING RIGHTS ON MUTUALLY AGREED TERMS & CONDITIONS.

IN CASE YOUR COMPANY IS INTERESTED, PL. CONTACT ME. MY MOBILE NO. IS +919424140739.



ADVANTAGES OF NEW DRIVING MECHANISM


BY- R. P. NAIK


1. Both legs can drive simultaneously: Due to independent nature of driving both of the legs can be utilised for driving simultaneously whenever required. This will help in dead start or accelerating with high load at step gradients or rough tar rain etc.

2. Continuous driving torque: The driving force on the rear wheel (s) will be a continuous one. As soon as a leg finishes its driving stroke the other leg will start its driving stroke and hence virtually there will be no time of zero torque.

3. More force than driver’s weight can be applied without fatigue: The backrest provided will give support to driver in such a way that by utilizing reaction from backrest, the driver can put on force more than his own weight whenever required.

4. No stress in portion above the waist: Due to same backrest, there will be no stress developed above the waist and back pen and hand tension will be eliminated.

5. More angle turned by thighs & knees ensure more force available when required: Due to position of seat and paddle, the angle turned through by thigh and knee for any stroke of driving will be more than corresponding angle in case of ordinary cycle (rickshaw) hence there will be more work done available per driving stroke of the paddle.

6. Crippled persons can use their able leg: The same system of driving can be utilised for handicapped person’s tricycles. In these, the handicapped person can use his able leg along with his hand for driving the tricycle. If the amputation of a leg is below the knee; than he can use even his stump as well as his able leg for driving with the help of suitable padding and paddle modification.

7. Easy adaptability for existing manufacturers: Once this system proves its utility and is accepted for increased speed /load carrying capacity of rickshaw, the existing cycles or rickshaw manufactures can easily convert to this design without altering many of their facilities.

8. Gear arrangements: Suitable gear arrangements will enhance speed / load carrying capabilities tremendously.

Graphical comparison of torque from existing & new driving system is available at "http://www.scribd.com/doc/13731738/CYCLE-MANUFACTURERS-INTERESTED-IN-JOINT-PATENTING-WE-CAN-REAP-BENIFITS-TOGETHER".

Tejj constant torque ic engine

Posted: 08 Mar 2011 05:43 AM PST

TEJJ IC ENGINE
(CONSTANT TORQUE RECEPROCATING IC ENGINE)
In all IC engines built so far, the reciprocating motion of the connecting rod
is converted in to rotary motion for wheel through crankshaft. This was
most appropriate technology when the engine was invented. However, with
continuously rising fuel prices around the world, many attempts are being
made for improving engine efficiency.

I have studied existing technology in detail & have found out following
disadvantages with existing system.

DISADVANTAGES IN EXISTING SYSTEM
1. The torque generated is always in a sine wave form.
2. Although, fuel combustion exerts tremendous force on piston from
TDC to BDC (can be considered constant for any particular power
stroke); all of it is never converted in to desired torque. When piston
is near TDC or BDC, the force is wasted in compressing / stretching
crankshaft radial arms towards / away from crankshaft bearings. Due
to this repetitive cyclic force, crankcase is required to be designed
adequately strong & robust for bearing non converted force from
Pistons.
3. Due to sine wave nature of torque conversion, maximum torque is
available ONLY AT CRANKSHAFT ROTATION AT MULTIPLES OF 90 deg..
For all other times, the torque available is LESS THAN MAXIMUM
POSSIBLE.
4. For a 4 cylinder engine with cranks placed at 90 deg. apart & firing order
1,3,2,4; cylinder 1 (say) has power stroke from 0 deg. to 180 deg.of
crankshaft rotation; then other cylinders will fire as under
· Cylinder 1: 0 deg. to 180 deg..
· Cylinder 3: 180 deg. to 360 deg..
· Cylinder 2: 270 deg. to 450 deg..
· Cylinder 4: 450 deg. to 630 deg..
For cylinder 1, next power stroke starts at 720 deg. only & hence it can be
seen that from 630 deg. to 720 deg., there is no power available in any of the cylinders. Engine has to cross this zone only by means of inertia of
the over all system.

Considering all these disadvantages, I have developed a new concept in IC
Engine, which WILL NOT HAVE ANY OF ABOVE DISADVANTAGES.
I have named it TEJJ IC ENGINE having following advantages:

ADVANTAGES OF TEJJ IC ENGINE
1. This Engine WILL PRODUCE CONSTANT TORQUE OVER ALL
POSITIONS OF CRANKSHAFT ROTATION. Torque wave will be a
rectangular one.
2. The torque will be comparable to that of ELECTRIC MOTOR.
3. As no force from piston will be wasted in exerting undue force on
crankshaft bearings, crankcase design can be made relatively
lighter.
4. Torque available will be EQUAL TO MAXIMUM POSSIBLE TORQUE of
existing sine wave torque at 90 deg. multiples.
5. This engine can be easily made in existing plants since It is only
addition / modification of components & rearrangement of existing
engine using ALREADY PROVEN COMPONENTS ELSE WHERE.
6. No new technology yet to be tasted is used for this invention.
7. Work done PER POWER STROKE of ENGINE WILL BE ALMOST 55%
HIGHER THAN THAT IN AN EXISTING SINE WAVE IC ENGINE.
8. This will lead to TREMENDOUS INCREASE OF ENGINE EFFICIENCY /
MILAGE FROM VEHICLE.
9. This Engine can be used for all IC engine applications as at present.
10. This Engine can be used for all 2-stroke / 4-stroke engines running on ANY FUEL.

IN CASE ANY INDIVIDUAL / INSTITUTE / MANUFACTURER IS READY FOR
SPONCERING DEVELOPMENT OF A PROTOTYPE OF THIS NEW ENGINE;
KINDLY CONTACT ME ON MOBILE NUMBER 919424140739 OR E-MAIL
Rp_naik@in.com. I assure that concept is fully ready with drawings,
animated presentations etc & only shop floor designing / manufacturing is
remaining.

Links with relevant graphics are available at "http://www.scribd.com/doc/49011286/TEJJ-IC-ENGINE-Constant-Torque-IC-Engine".

Runners up announced in “Extreme Redesign” contest by Dimension 3D Printing

Posted: 08 Mar 2011 05:41 AM PST

More than $65,000 in student scholarships awarded since contest inception

FRANKFURT - 8th March 2011- Dimension 3D Printing, a brand of Stratasys Inc. (NASDAQ: SSYS), today announced the finalists in its seventh annual Extreme Redesign 3D Printing Challenge.


Extreme Redesign LogoThe contest challenges students worldwide to submit their innovative designs, whether an entirely original concept, a new perspective on an existing product, or a work of art, animation or architecture. A list of finalists is available online at the Extreme Redesign section of the Dimension website.

Dimension 3D Printing will again award the top three students $2,500 or $1,000 scholarships in the categories of High School Engineering, College Engineering, and Art & Architecture. Designs will be evaluated based on creativity, usefulness, part integrity and aesthetics. Instructors of the three first-place student winners will receive a laptop computer for use in the classroom. Since the contest began seven years ago, more than $65,000 in scholarships has been awarded to students.

In addition to the above mentioned categories, this year's contest will feature two bonus award categories in which students may compete for $250. The first bonus category asks students to create a fresh design twist on an existing building or bridge. The second bonus category challenges students to create an intriguing puzzle or game.

From the ten finalists in each category, a panel of independent judges from industry and the engineering media will select the winners this spring. This year's judges are Al Dean, Editor at Develop3D magazine, David Mantey, Editor at Product Design & Development magazine, Ian Kovacevich, VP of Engineering at Enventys, LLC and Patrick Gannon Engineering Manager at rp+m (a Thogus partner).

For videos, photos, and descriptions of previous years' winning designs, visit Extreme Redesign 3D Printing Challenge. For contest rules and regulations, visit Extreme Redesign Rules & Regulations.

Dimension, a brand of 3D printers by Stratasys, offers computer-aided-design (CAD) users a low-cost, networked alternative for building functional 3D models from the desktop. The 3D printer builds models layer-by-layer using ABS plastic, one of the most widely used thermoplastics in today's injection-molded products. Dimension 3D printers allow users to evaluate design concepts and test models for form, fit, and function. Online at: 3D Printers, FDM Prototyping, 3D Models | Dimension Printers

Electrical Engineering Group Study - Third Year Students

Posted: 08 Mar 2011 04:49 AM PST

Why can't our third year electrical engineering students join in and pick up a topic for group study ;) . Pick up a topic and post your doubts on it and solve them for others.

What could be a better way of studying while spending time here on CE :)

Differences Between Snapdragon & Hummingbird Processor

Posted: 08 Mar 2011 04:47 AM PST

Perhaps our electronics engineers could shed some light on the differences between these two processors. Apart from the obvious ones, are there any changes in the architecture?
Posted by at

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