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ICPTT 2009, Advances and Experiences With Pipelines and Trenchless Technology for Water, Sewer, Gas, and Oil Applications

Creator: Mohammad Najafi, Baosong Ma | 2009-12-30

They plan to equip methane laser detection equipment on the helicopters to make the flight more efficiency. ... 2003): ()]2 RC ×− ≈ νσ (1) [ ] 1[)2/(2 0 R SPP ηρ Here: 0P and P denote the power of outgoing laser and the power of ...

Publisher: Amer Society of Civil Engineers

About this book
This proceedings contains 227 papers which were presented at the International Conference on Pipelines and Trenchless Technology (ICPTT), held on October 18-21, 2009, in Shanghai, China.



64 pages

Inside the U.S. army today

Creator: Gordon L. Rottman | 1988-11-24

Laser-guided munitions such as the artillery- fired Copperhead and the Hellfire are guided to the target by illuminating it with a laser spot generated from a laser designator mounted in another AH-64, an OH-58C scout helicopter, ...

Publisher: Osprey Publishing

About this book
When conscription was eliminated in the early 1970s, the US Army found itself with a very different kind of soldier. While the personality of the Army remained the same, the organization of its higher levels of command and combat formations, and the internal structure of its units underwent major changes under the 'Army of Excellence' program of the 1980s. This book explores the US Army of the late 80s, including the training methods, weapon systems, Reserve Components, organization and uniforms of one of the world's most potent fighting forces. The text is illustrated with numerous photographs and eight colour plates.



154 pages

A potential field based formation control methodology for robot swarms

Creator: Laura E. Barnes, University of South Florida | 2008

6.1.2 Radio-Controlled Helicopter In order to demonstrate UAV-UGV swarm coordination an autonomous RC helicopter is ... of skids with an incorporated pan tilt unit for a Sony block camera. Sensors include a GPS unit, an IMU, and laser.

Publisher: ProQuest

About this book
A novel methodology is presented for organizing swarms of robots into a formation utilizing artificial potential fields generated from normal and sigmoid functions. These functions construct the surface which swarm members travel on, controlling the overall swarm geometry and the individual member spacing. Nonlinear limiting functions are defined to provide tighter swarm control by modifying and adjusting a set of control variables forcing the swarm to behave according to set constraints, formation and member spacing. The swarm function and limiting functions are combined to control swarm formation, orientation, and swarm movement as a whole. Parameters are chosen based on desired formation as well as user defined constraints. This approach compared to others, is simple, computationally efficient, scales well to different swarm sizes, to heterogeneous systems, and to both centralized and decentralized swarm models. Simulation results are presented for a swarm of four and ten particles following circle, ellipse and wedge formations. Experimental results are also included with a swarm of four unmanned ground vehicles (UGV) as well as UGV swarm and unmanned aerial vehicle (UAV) coordination.


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Editor's picks

  • Air Hogs

    Air Hogs RC - Zero Gravity Laser Racer - Red

    Toy (Air Hogs)

    Rating (64 reviews):
    (3.9/5)
    Air Hogs

    My son loves this toy!

    I was sent the Air Hogs Zero Gravity Laser Racer by Bzz Agent in exchange for a review of the product. My 6 year old son absolutely loves this toy! He was so excited once I told him he was getting it and checked the mail everyday for it to arrive. The day the package was delivered he couldn't wait to tear the package open and start playing! The car (racer) itself was a little smaller then I imagined it would be but that didn't bother him a bit. After a quick installation of 6 AA batteries in the remote he was ready to start racing. His face beamed with joy as he watched it glide along his bedroom wall. The first few tries he was having difficulty keeping the laser within the allotted radius for it to control the car. Once I gave him a visual guide of how far he could go for it to still work he didn't have anymore problems. I have to say that it doesn't work as well on the floor portion for my household. I have carpet in the main rooms so that is completely out and the kitchen is... 5/5 Jamie - See all my reviews This review is from: Air Hogs RC - Zero Gravity Laser Racer - Red (Toy) I was sent the Air Hogs Zero Gravity Laser Racer by Bzz Agent in exchange for a review of the product. My 6 year old son absolutely loves this toy! He was so excited once I told him he was getting it and checked the mail everyday for it to arrive. The day the package was delivered he couldn't wait to tear the package open and start playing! The car (racer) itself was a little smaller then I imagined it would be but that didn't bother him a bit. After a quick installation of 6 AA batteries in the remote he was ready to start racing. His face beamed with joy as he watched it glide along his bedroom wall. The first few tries he was having difficulty keeping the laser within the allotted radius for it to control the car. Once I gave him a visual guide of how far he could go for it to still work he didn't have anymore problems. I have to say that it doesn't work as well on the floor portion for my household. I have carpet in the main rooms so that is completely out and the kitchen is... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , September 16, 2014

    Fun, but has its limits...

    I received this product free to test and review from BzzAgent. My son was very excited to try this product out when it arrived. It takes 6 batteries, which sounds like a lot, but they all go in the remote to run the laser light AND to charge up the car with. Expect to do a lot of waiting with this toy. It takes a while to charge the car, then you get roughly 20 minutes of play time before the low battery light starts blinking, then you have to turn it off and wait 10-15 minutes for the car battery to "cool down" before charging it again (although it didn't seem to be terribly hot to me). We weren't able to get it to work at all on our very short carpet, and it often got stuck on our tile floors, but it was fun to drive it around picture frames, etc, on our walls, especially in a dark room so you can see the car lights and the laser. We also couldn't test it out on the ceiling either because they were too textured. You can't move the laser pointer too fast or the car will get... 4/5 Iowa mom (Iowa) - See all my reviews This review is from: Air Hogs RC - Zero Gravity Laser Racer - Red (Toy) I received this product free to test and review from BzzAgent. My son was very excited to try this product out when it arrived. It takes 6 batteries, which sounds like a lot, but they all go in the remote to run the laser light AND to charge up the car with. Expect to do a lot of waiting with this toy. It takes a while to charge the car, then you get roughly 20 minutes of play time before the low battery light starts blinking, then you have to turn it off and wait 10-15 minutes for the car battery to "cool down" before charging it again (although it didn't seem to be terribly hot to me). We weren't able to get it to work at all on our very short carpet, and it often got stuck on our tile floors, but it was fun to drive it around picture frames, etc, on our walls, especially in a dark room so you can see the car lights and the laser. We also couldn't test it out on the ceiling either because they were too textured. You can't move the laser pointer too fast or the car will get... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , September 27, 2014

    zero gravity laser racer

    0 5/5 pamela banks - See all my reviews Verified Purchase(What's this?) This review is from: Air Hogs RC - Zero Gravity Laser Racer - Red (Toy) This toy is very awesome and my five year old will enjoy it espcially when.it climbs the wall.thank you for a speedy delivery 0 Help other customers find the most helpful reviews  Was this review helpful to you? , September 5, 2014
    List Price: $39.99
    The Air Hogs Zero Gravity Laser Racer is built for drivers ages 8+ and requires 6 AA batteries for operation.
    It's fun, and easy to control. You have to see it to believe it!
    Defy the laws of gravity with patented Wall Climbing Technology. Drive along the floor, up the wall or even upside down!
    The built-in infrared sensors chase the remote controls laser beam in any direction you point it.
    Includes: 1 Air Hogs Zero Gravity Laser Racer, 1 IR Controller/Charger, 1 User Instruction Guide


  • Air Hogs

    Air Hogs RC - Zero Gravity Laser Racer - Blue

    Toy (Air Hogs)
    List Price: $39.99

    The built-in infrared sensors chase the remote controls laser beam in any direction you point it.
    Defy the laws of gravity with patented Wall Climbing Technology. Drive along the floor, up the wall or even upside down!
    Includes: 1 Air Hogs Zero Gravity Laser Racer, 1 IR Controller/Charger, 1 User Instruction Guide
    It's fun, and easy to control. You have to see it to believe it!
    The Air Hogs Zero Gravity Laser Racer is built for drivers ages 8+ and requires 6 AA batteries for operation.


  • AEI Holding

    Propel - Air Combat Laser Battling Motion Controlled Helicopter - Green

    Toy (AEI Holding)
    List Price: $129.00

    Realistic Flight-Stick Motion Control
    Shift between two Speed Modes
    Requires 4 AAA batteries
    Controller work for both Left or Right handed individuals


  • Cobra

    Cobra Air Raptor Remote Control Fighting Helicopters

    Hobby (Cobra)

    Rating (3 reviews):
    (3.7/5)
    Cobra

    Cheap

    0 3/5 BK - See all my reviews Verified Purchase(What's this?) This review is from: Cobra Air Raptor Remote Control Fighting Helicopters (Toy) These are fun, but only last about 5 minutes before needing to be recharged. The channels are not always correct, as the remote for channel C will also control the helicopter on channel A. They are durable, but the screws come loose and such, so they require immediate maintenance. I would recommend that they better to fly alone, not in battle. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , May 20, 2013

    I'd buy more

    0 4/5 Lisa - See all my reviews Verified Purchase(What's this?) This review is from: Cobra Air Raptor Remote Control Fighting Helicopters (Toy) I am a beginner and have been using this product for a few weeks. Initial charging says an hour but mine where fully charged in 35 minutes. They are relatively durable for crash landings while your learning the controls and the few replacement parts included are a great bonus for the just in case.The only draw back is the battery life. I am averaging about 15-20 minutes for combat or just flying time and then you require a full recharge. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , February 10, 2014

    Lots of fun - but didn't last

    0 4/5 Norman Jacobson Jr. - See all my reviews Verified Purchase(What's this?) This review is from: Cobra Air Raptor Remote Control Fighting Helicopters (Toy) My two boys thoroughly enjoyed receiving the copters and learning to fly them. For reasons unknown to me, after about two weeks, the copters didn't fill our home skies any longer. I'm not the boys ever fought one air battle. Oh well, they look cool on their shelves. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , February 8, 2014
    List Price: $109.99
    Helicopter based game of tag, with hit indicator lights and rotor adjustment
    3.5 channel Mini Remote Control Helicopters with Gyro and Rotor Jam protection
    Includes USB charger


  • propel

    Propel Storm Chaser Laser Battling Helicopter - Red & Silver Two Channel

    Toy (propel)

    skill level beginner. Requires 6 AA & 1.5V alkaline not included
    Fly as a stand alone helicopter or battle other storm chaser helicopter
    2 channel operation , built in lights & Sound , plus gyroscopic chip for ultra-stable flight
    Special feature infrared laser battling
    Interactive battle mode : forces opponent's helicopter to land after 3 strikes


  • Asian Express

    Air Combat RC Helicopter with Realistic Flight Stick Controller

    Toy (Asian Express)

    Fight in flight-fires infrared "shots" at your enemy's copter.
    Side counter lights illuminate when copters are hit-3 hits and the enemy copter spirals to the ground!
    Unique frequencies-fly and battle with up to 8 pilots at once
    Battle other Air Combat copters with advanced infrared laser technology
    Flight Stick controller for more realistic flight maneuvers


  • Spin Master

    Spinmaster Air Hogs Battling Havoc R/C Helicopters

    Toy (Spin Master)

    Rating (135 reviews):
    (3.1/5)
    Spin Master

    FUN! An excellent gift idea.

    0 4/5 kz - See all my reviews = Durability:, November 6, 2007

    Fun toys ... But sort of hard to fly

    0 3/5 S. Heady (Sparta, TN United States) - See all my reviews, November 7, 2007

    Really fun, good build quality

    I'm a HUGE fan of the Air Hogs line - most of their planes and helicopters are really fun. These little units are similar in size and shape to the other Air Hogs helicopter - the Havoc, but it's not the same. The body shape is slightly different, and it uses a more dense type of foam, and the rear rotor seems to have been improved a bit.The fighting is pretty good, but sometimes it's difficult to actually aim the buggers - that could be my own lack of skill talking, but it's something to consider. It's also quite okay from the remote's perspective to just hold down the trigger and fire IR everywhere, and since it bounces off walls somewhat, in a small room this could make the game less enjoyable/challenging.Keep in mind that you really don't need two people to play unlike other games - if two people are around, great, if not, the havocs are a ton of fun to fly by themselves.Like the original havoc, these guys need a little weight (the included... 5/5 Bryan Kennedy (San Francisco, CA) - See all my reviews, November 8, 2007
    List Price: $79.99


  • Laser Pegs

    Laser Pegs 6-in-1 National Football League Set

    Toy (Laser Pegs)
    List Price: $29.99
    Price: $8.43
    You Save: $21.56 (72%)

    100% recyclable, LED life expectancy of 100,000 hours or 11 years, 90 day no questions asked warranty
    Build the light up model "Collapsing Pocket" and 5 more light up models like the Bench Press, Blimp and the Goal Post
    Includes 10 Laser Pegs, 60 construction parts, 32 Team Decals, a Triangle Power Base and Model Instructions
    Once connected to a power base, each Laser Pegs shape feeds the next to light up as you build
    3 Light Settings: On, Fast Flash, Slow Flash; Laser Pegs' unique design makes them compatible with other major construction kits


  • Asian Express

    Combat RC Copter

    Toy (Asian Express)

    Full function infrared remote
    Advanced technology gives you more real-flight maneuvers and battle action
    Using infrared laser technology, the copter "shoots" other Combat Copters
    On board LED lights illuminate with each "hit"
    Indoor copter for intermediate skill levels


  • AEI Holding

    Propel - Gyropter II Motion Controlled RC Helicopter

    Toy (AEI Holding)

    Rating (1 reviews):
    (5.0/5)
    AEI Holding

    a step above.

    0 5/5 Rob - See all my reviews = Durability:, January 9, 2014
    List Price: $99.00
    Ages 12+ - Indoor use
    Gyroscopic Infrared RC Flight Controller
    Banks like a real Helicopter and Hover in Mid Air
    3.5 Channel: Flys Up, Down, Left, Right, Forward, Backward, and Hover
    Ultra Stable Flight


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