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Rc 4 Channel Helicopters - Bookshelf

Performance Data From a Wind-Tunnel Test of Two Main-Rotor Blade Designs for a Utility-Class Helicopter

The aerodynamic characteristics of the RC(4)-10 airfoil have been obtained but have not been reported on at this time. ... The rotating-blade data are transferred through a 30-channel slip-ring assembly. Rotor forces and moments are ...



368 pages

The Son Tay Raid, American POWs in Vietnam Were Not Forgotten

Creator: John Gargus | 2010-09-28

There they would provide fuel for two Air Force Combat Apple RC-135Ms and for one radio relay RC-135. ... Their aircraft would be configured with additional equipment to monitor four more UHF channels used by the raiders.

Publisher: TAMU Press

About this book
In May 1970, Aerial Photographs Revealed what U.S. military intelligence believed was a Pow camp near the town of Son Tay, twenty-three miles west of North Vietnam's capital city. When American officials decided the prisoners were attempting to send signals, they set in motion a daring plan to rescue the more than sixty airmen thought to be held captive.On November 20, a joint group of volunteers from U.S. Army Green Berets and U.S. Air Force Special Operations Forces Perfectly executed the raid, only to find the prisoners' quarters empty; the POWs had been moved to a different location. Initially, the Son Tay raid was a devastating disappointment to the men who risked their lives to carry it out. Many vocal critics labeled it as a spectacular failure of our nation's intelligence network. However, subsequent events proved that the audacity of the rescue attempt stunned the North Vietnamese, who implemented immediate changes in the treatment of their captives. The operation also restored the prisoners' faith that their nation had not forgotten them.John Gargus not only participated in the planning phase of the Son Tay rescue, but also flew as a lead navigator for the strike force. This revised edition incorporates the most recent information from raid participants and also includes recent translations of North Vietnamese perspectives. No previous book on this top-secret action has given such a full account or such insight into both the execution and aftermath of Son Tay. This book will be an invaluable addition to the history and historiography of the Vietnam War.



168 pages

Maximum PC

2006-12

The sim ships with a USB controller that mimics an actual Futaba 4-to-10 channel transmitter. The controller includes inputs and patch cords to connect the transmitter from your own RC kit, if you prefer to use that instead, ...

About this book
Maximum PC is the magazine that every computer fanatic, PC gamer or content creator must read. Each and every issue is packed with punishing product reviews, insightful and innovative how-to stories and the illuminating technical articles that enthusiasts crave.


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4 Channel RC Helicopters - HobbyTron.com | Airsoft Guns ...
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Syma RC Helicopter Review - 3 channel vs 4 channel - YouTube
Best RC Helicopters for beginners. I compare the 3 channel rc heli and a 4 channel rc heli. Get your own RC Helicopters: 3 Channel: http://tinyurl.com/Best ...

4-Channel Co-Axial RC Helicopters - XHeli.com - RC ...
Hero RC H911 iRocket 4 Channel Fixed Pitch Ready to Fly Helicopter w/ bonus Battery, Balance Bar, Main Blade, Connect Buckle, Tail Blade, USB Charger

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Editor's picks

  • UDI

    New with Video Camera! UDI U13A 3 Channel 2.4GHz Metal RC Helicopter w/ Video Camera

    Toy (UDI)

    Rating (188 reviews):
    (3.9/5)
    UDI

    Weeeeeeeeeeeeeeee!

    This is my second one. I broke the first using a pipe to get it out of a tree. Why buy another? It is without a doubt the best rc video helicopter I have received here. I intend to buy several more so I can rotate them when I am out and about flying them. Keeping one charged while we fly the others....thats how much fun these are. Durable? You bet! Outdoor flying? Not the greatest if there are any winds aloft at all, but on a calm day, there is nothing better than flying this toy over and over and videotaping your exploits. I have flown up to about 30 meters, and could have gone higher, but the darned thing was hard to see. Incredibly stable, you will find yourself flying this helicopter through increasingly more difficult paths, as it is rock steady when it is calm out.BUY THIS! for the money, it is amazing.As with anything, there are pros and cons. I guess in keeping with the other comments, the cons of this helicopter is that flying outdoors is a challenge if there is any... 5/5 Dave Francis (Bellevue, WA, US) - See all my reviews = Durability:, December 1, 2012

    New with Video Camera! UDI U13A 3 Channel 2.4GHz Metal RC Helicopter w/ Video Camera

    0 4/5 Brandon G. Racine "WRENCHRIGHT" (ROUSES POINT, N.Y.) - See all my reviews, November 6, 2012

    Nice all black, good quality camera, stable flight.

    I received this today and charge it right away for test flight. It is very solid, as nice looking as Syma brand S031G only a bit smaller. Charging time is 20-30 min, and flight time is 5-7 min quite short. If you can upgrade the battery to keep it longer in the air that would be more fun. The 2.4G transmitter is neat, it's not bulky and has an electronic display. Binding take some time, i don't know why, my transmitter sometime takes up to full 5 min for it to bind with the black bird. But once they both hooked up, it's fun to fly. Operating the camera/still photo is no brainer. There are one button for each action on the transmitter, on or off, however it take some time to get used to. The slot for the SSD is as easy to operate as in any p/s cameras, insert the card, soft push to eject it. Over all, it's nice. But with the price of $50+, it's a little expensive. The "party light" led display along the tail boom is just sicken me (my kids love it); and annoying as well making it look... 5/5 Kevin - See all my reviews = Durability:, June 26, 2012
    Good quality helicopter with camera to take pictures and videos
    4-in-1 infra-red receiver assemble 3-axis gyro, ESC, mixer and receiver
    Metal alloy frame with elastic blades and flybar endure crash. Transmitter supports 3 channels for 3 heli fly at the same time
    channels for 6 directions: up, down, forward, backward, turn clockwise and anti-clockwise
    Over charging protection prolong life span of Lipo battery. Over current protection technology


  • Syma

    Syma X5C 4 Channel 2.4GHz RC Explorers Quad Copter w/ Camera

    Toy (Syma)

    Rating (206 reviews):
    (4.4/5)
    Syma

    Big Smile - take your time ! ( + a secret )

    The best flying toy in my collection so far ( a bunch of expensive heli's and a couple of quads )No instructions in ANY language included. Look online or learn on a SYMA X-1 quad. Box came early from China but was beat-up. Fortunately this is a tough little quad !IF YOU ARE EXPERIENCED - you will be OK without the blade guards ( which are a nuisance and add weight ). Otherwise learn with incremental progress - and no regrets.A tip: put a strip of brightly colored tape or paper on the back of the body of the quad so you can see the orientation from a distance. It gets very small very fast when it is high and the wind is taking it away. Knowing how it is pointed may be the last chance to bring it back " ;-( "The Camera - comes with 2GB Micro-SD with proof-pictures from the factory in China. Way Cool !The camera is made to still frame / video using the UP-DOWN TRIM control on the LEFT SIDE of the controller. There... 5/5 Ken - in Miami (Miami, FL) - See all my reviews Verified Purchase(What's this?) This review is from: Syma X5C 4 Channel 2.4GHz RC Explorers Quad Copter w/ Camera (Toy) The best flying toy in my collection so far ( a bunch of expensive heli's and a couple of quads )No instructions in ANY language included. Look online or learn on a SYMA X-1 quad. Box came early from China but was beat-up. Fortunately this is a tough little quad !IF YOU ARE EXPERIENCED - you will be OK without the blade guards ( which are a nuisance and add weight ). Otherwise learn with incremental progress - and no regrets.A tip: put a strip of brightly colored tape or paper on the back of the body of the quad so you can see the orientation from a distance. It gets very small very fast when it is high and the wind is taking it away. Knowing how it is pointed may be the last chance to bring it back " ;-( "The Camera - comes with 2GB Micro-SD with proof-pictures from the factory in China. Way Cool !The camera is made to still frame / video using the UP-DOWN TRIM control on the LEFT SIDE of the controller. There... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , October 23, 2014

    Great Quad for the price...

    0 5/5 Michael A Kausch - See all my reviews Verified Purchase(What's this?) This review is from: Syma X5C 4 Channel 2.4GHz RC Explorers Quad Copter w/ Camera (Toy) This a great quad.. Very easy to fly. I have flown in all kinds of wind conditions and the quad handles very well.Takes good video and the pics are great... Buy extra battery's because you wont want to put this thing down.. 0, November 2, 2014

    Syma X5C vs WLToys V959 vs Hubsan X4 H107C

    I really wanted a quadcopter, and it started last Christmas when I was gifted a . Lots of play later, and I was hankering for another one. On a whim, I picked his this Syma X5C as well as a . My review is the V959 is long done, so this one is being written for the X5C as well as the X4.In terms of size, the Syma is the largest of the three, but not by much compared to the V959. The X4 is way small, palm of your hand size. Of the three, the X4 is the most solid feeling, solid like a HotWheels car, while the X5C feel very cheap and flimsy. All three sport a camera, at about the same MP rating. They don't all work the same though. The V959 has the best... 4/5 C. Schmidt (amztabhlp at gmail) - See all my reviews, July 6, 2014
    Using spread spectrum technology for further remote distance, best anti-interference ability, least power consumption. you could fly more helicopters at the same time, its reaction speed is 100 times faster than other radio control
    Various control options for those piloting the X5 Up, Down, Left, Right, Forward, Backward, Leftward flight, Rightward flight.
    A key 360o roll, continuous roll for perfect action and wonderful performance.
    Equip with HD Camera
    Build-in 6 axis gyroscope for precise hovering in the sky


  • Haktoys

    Haktoys® HAK448 4 Channel 16" RC Helicopter, Gyroscope, Rechargeable, Ready to Fly, and with LED Lights - Colors May Vary

    Toy (Haktoys)
    List Price: $129.99
    Price: $79.99
    You Save: $20.00 (25%)

    Package Contents: 1 x HAK448 Helicopter, 1 x 3.7V 700mah battery (built-in), 1 x Transmitter, 1 x Antenna, 1 x Wall charger, 1 x Screwdriver, 1 x Instructions Manual. REQUIRED: 6 x 1.5V AA alkaline batteries for the Transmitter (Remote Control)
    Length: 16" Width: 8.3" Height: 6.5" Product weight: 0.65 lbs. Main Rotor Diameter 13.5". Controls: forward / backward / up / down / left / right Intelligent R/C System. Full Scale Remote Control. 360 Precise Directional Movement. Smooth hovering performance.
    Electric Powered, 4 Channel, Radio Control, Ultra Light Alloy Metal Body, Coaxial Rotor, Detailed Paint Job
    Indoor/outdoor copter flies up to 300 feet
    Please Note: Do not leave the helicopter switched on when not in use.


  • Syma

    Syma S107G 3.5 Channel RC Helicopter with Gyro, Blue

    Hobby (Syma)

    Rating (0 reviews):
    (4.2/5)
    Syma

    Great little toy

    Most of the other reviews have hit the major pros and cons with this, but there are still a few more that I can add. Hope they help in making your purchasing decisions!PRO:- Thanks to the gyro, very short learning curve. Remote has two joysticks. Left side only moves up/down and controls speed of the rotors, which controls how much lift they generate. Right joystick moves up/down (controlling forward/reverse) and left/right (makes heli spin). You can also moving the right stick diagonally to make various turns while moving forward or backwards (reverse "figure-8's" are always impressive).- Surprisingly large number of "mods" that can be done to a $30 heli. After experimenting, I have settled on two minor ones. First, I removed the spring from the left joystick in the controller. This lets me put the heli in a hover and let go of the remote ("look ma, no hands!"). I have also moved the landing gear forward in their mounts to push the center of... 4/5 RJ (NY, NY) - See all my reviews = Durability:, December 24, 2010

    An unsung hero of the indoor RC helis - The Syma S107 (7.5 inches long)

    RATING: After flying the 7.5 inch Syma S107 indoor heli for about 3 months now, I have to say that it is one of the most under-rated RC heli out there, hands down. Shop around. At about $30 online with taxes and stuff, this little trooper delivers the looks, detail, durability and performance of a much pricier heli. The Syma S107 has only 3-way controls but it competes surprisingly well with the likes of the Blade MCX2 which has 4-way controls and retails for about $150 off-line.PERFORMANCE: I find it more fun to fly the Syma S107 than the smoother and more mellifluous Blade MCX2. In this sense the Syma S107 hews to a less is more principle: i.e. it delivers more with less. But here is the irony of the whole situation: the Syma S107's ragged performance edge actually connects with you better than the ultra-smooth Blade MCX2. It's almost like the difference between stick shift and automatic transmission. The S107's controls just feel more tactile than those of the Blade... 5/5 C. Rex - See all my reviews = Durability:, November 3, 2010

    Is there such a thing as a toy that's too perfect...?

    The Syma S107 is so easy to control that on my first flight I had it tour my whole apartment, zooming in and out of closets and never touching an obstacle until I deliberately landed it. If you've never flown a good RC heli before, you might need to practice a bit. It might be your second or third flight before you get that good.The S107 is *really* that easy to control.I'm sure that many of you have played with Air Hogs and other micro helis and you long for a little heli that just plain flies where you want it to fly and stays up in the air. I'm here to tell you that such perfection is within your grasp.Before I got my S107, I already owned two Syma S105s and I never get tired of flying them. They look almost identical to the S107 and the remote is identical, but they take a little bit of skill to fly with precision and I've made little tweaks here and there to get better control.The S107 takes almost no skill to fly. They gyro makes... 5/5 Hey Mo!! (The City of Townsville) - See all my reviews, July 28, 2010
    List Price: $19.99
    Battery Type: Lithium Polymer (LiPO Battery), batteries for remote control not included
    Easy to Fly
    S107 and S107G differ only in labeling. Either may be shipped.
    Motor Type: Brushed
    Great for Beginners
    Stabile Flight Characteristics


  • WLtoys

    WLtoys Large V912 4CH Single Blade RC Remote Control Helicopter With Gyro RTF

    Toy (WLtoys)
    List Price: $206.99

    Transmitter with LCD screen
    Large Single Blade RC Helicopter with Gyro
    WL Toys V912


  • Syma

    Syma X1 4 Channel 2.4G RC Quad Copter - UFO

    Toy (Syma)

    Rating (599 reviews):
    (3.9/5)
    Syma

    Critical Piece of Instruction....

    We were disapointed in this toy on Christmas morning. It was impossible to fly - it just went sideways as soon as it took off and nothing we did seemed to calibrate it sufficiently to hover. The instruction manual says "After charging the aircraft the light will flash for ten seconds. Turn on the aircraft and controller and wait for flashing lights to indicate the aircraft is ready for flight." What it fails to mention is that it is critical to place the "aircraft" on a flat surface at his time IMMEDIATELY after inserting the battery. The model then apparently is able to calibrate itself and will hover reasonably stablely. The online manual clued me in to our mistake (we were probably holding the model in our hands in an un-level position for the first dozen seconds after plugging in the battery)"When insert the charged battery, quad copter will into automatic detection state (the indicator light flashing swift in the first ten seconds when power on) at that time,... 4/5 D. Reading (Houston, TX USA) - See all my reviews, December 26, 2012

    $50 of Awesomeness

    Let me preface by saying that I own around 40 RC helicopter ranging from high end $3000 gassers to cheap $25 fp toys. This was my first quad. I bought this at the 49.99 price point and have no regrets even though they are now 39.99This has been the best $50 that I have spent in a long time. There are so many things going for this kit, where do I begin.The Good-Incredibly durable. I have crashed countless times from goofing around and flying indoors and have yet to cause any permanent damage. Even though this is a cheap product they made good choices in durable materials.-Very stable and easy to fly. My wife has no experience with helicopters, but I was able to get her to try this out in our living room.-Stable in outdoor conditions. I was surprised at the ability to fly this in light-breeze conditions.-Payload capacity. For fun, I strapped an iPod nano to the bottom to shoot video. This weighs 35 grams and the quad seemed to be able to... 4/5 Gadget Junkie (Bay Area,, CA United States) - See all my reviews Verified Purchase(What's this?) This review is from: Syma X1 4 Channel 2.4G RC Quad Copter - UFO (Toy) Let me preface by saying that I own around 40 RC helicopter ranging from high end $3000 gassers to cheap $25 fp toys. This was my first quad. I bought this at the 49.99 price point and have no regrets even though they are now 39.99This has been the best $50 that I have spent in a long time. There are so many things going for this kit, where do I begin.The Good-Incredibly durable. I have crashed countless times from goofing around and flying indoors and have yet to cause any permanent damage. Even though this is a cheap product they made good choices in durable materials.-Very stable and easy to fly. My wife has no experience with helicopters, but I was able to get her to try this out in our living room.-Stable in outdoor conditions. I was surprised at the ability to fly this in light-breeze conditions.-Payload capacity. For fun, I strapped an iPod nano to the bottom to shoot video. This weighs 35 grams and the quad seemed to be able to... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , November 23, 2012

    Revised instructions - UPDATED

    ***** UPDATED Jan. 11, 2014 **********I had a couple of people tell me that they could not get their copter transmitters to connect. After playing with the sequence a bit, we found that on some copters (not all... go figure) the TX should be turned on and initialized BEFORE the copter gets to the gyro initialization process - which makes it even more important to be ready to set it on a level surface before plugging the battery in. Anyway, this sequence change seems to address the problem some of the copters were having. The instructions have been updated to reflect this change.Now back to your regularly scheduled review...*****************************************I've been in R/C for 30+ years, and was very involved in R/C helis. This was my first quadcopter, and have enjoyed it very much. The hardest thing about this copter is getting it out of the box. Lots of cheap fun, and definitely a gateway drug to the hobby-grade... 4/5 Melsman (Central California) - See all my reviews Verified Purchase(What's this?) This review is from: Syma X1 4 Channel 2.4G RC Quad Copter - UFO (Toy) ***** UPDATED Jan. 11, 2014 **********I had a couple of people tell me that they could not get their copter transmitters to connect. After playing with the sequence a bit, we found that on some copters (not all... go figure) the TX should be turned on and initialized BEFORE the copter gets to the gyro initialization process - which makes it even more important to be ready to set it on a level surface before plugging the battery in. Anyway, this sequence change seems to address the problem some of the copters were having. The instructions have been updated to reflect this change.Now back to your regularly scheduled review...*****************************************I've been in R/C for 30+ years, and was very involved in R/C helis. This was my first quadcopter, and have enjoyed it very much. The hardest thing about this copter is getting it out of the box. Lots of cheap fun, and definitely a gateway drug to the hobby-grade... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , November 16, 2013
    List Price: $95.75
    Stabilty and agility in flight simplify professional 3D maneuvers like pirouettes 3D fun flips,rolls,and more.
    2.4GHz Radio control
    Controlling distance: About 40 Meters
    3 way precision controller: up/down, left/right, forward/backward
    Two Fly Mode:Indoor/Outdoor


  • JP Commerce

    4CH 2.4GHz Mini Radio Single Propeller RC Helicopter Gyro V911 RTF White&Blue

    Toy (JP Commerce)
    List Price: $119.95
    Price: $38.99
    You Save: $80.96 (67%)


  • Syma

    Syma S800G 4 Channel Remote Control Helicopter with Bonus Parts - Black & White

    Toy (Syma)
    List Price: $59.99
    Price: $21.41
    You Save: $38.58 (64%)

    Sideway flight as well as forward, backward, left, right, up and down
    Infrared control
    4 Channel Remote Control Helicopter with Bonus Parts!
    Swashplate controlled
    6-8 minute flight time


  • Syma

    Syma X5 4 Channel 2.4GHz RC Explorers Quad Copter

    Toy (Syma)

    Using spread spectrum technology for further remote distance, best anti-interference ability, least power consumption. you could fly more helicopters at the same time, its reaction speed is 100 times faster than other radio control
    unction: Various control options for those piloting the X5 Up, Down, Left, Right, Forward, Backward, Leftward flight, Rightward flight.
    Modular design structure is applied, more simple for assembly and convenient for maintenance
    A key 360o roll, continuous roll for perfect action and wonderful performance.
    Build-in 6 axis gyroscope for precise hovering in the sky


  • Syma

    Syma S109G 3.5 Channel RC Helicopter with Gyro

    Hobby (Syma)

    Rating (0 reviews):
    (4.1/5)
    Syma

    Best mini helicopter at this price!

    I have a small squadron of mini helicopters and this one is by far the best so far. I read great reviews of the Syma S107. I was quite pleased with it compared to some of the older Syma models. Then I saw the positive reviews for this and thought I would give it a go. It flies incredibly well! Quiter than the other seven helicopters I have and so stable, smooth, and responsive. It is a little slow with forward and reverse momentum, but not bad. Slow is easier to control...maybe that was intentional. We fly these every day in the office and this hands down outperforms everthing else.For those comparing models, here you go:Syma S109 Apache- ExcellentSyma S105G (Sport Helicopter) Very Good -Fastest, stable, but somewhat loud, durable metal frameSyma S107G- (Sport Helicopter) Very good- nearly identical to S105 but a little slower, different scheme,older?Syma S026 Chinook- Looks cool, flies ok, but hard to control. Too much power for its weight;... 5/5 Eric Rutter "Anotherflyer" (Alaska) - See all my reviews, July 1, 2011

    Freaking awesome. 10x better than 1st gen copters

    ****UPDATE after a year and a half of owning and flying this. Amazingly, still going strong after all this time, and still using original battery! Has to be the best toy value around. One very easy mod to make your heli move a little faster (forward), is to get some solder, and wrap a few coils around the nose at the very tip (don't block the IR sensor though, so be careful if you add weight using something else, like a coin as some people do). The way the model is shipped, is too light in the front, IMO, because (at least for mine), I could go quite a bit faster BACKWARD than I could forward. To add some forward collective speed at the slight loss of some agility, I highly recommend adding a little weight, so that you can still go backwards, but just barely. On a side note, I enjoyed flying this micro copter so much, I bought it's big BIG brother, the Syma 023G, so I could fly outdoors (RF instead of IR allows this to happen). Love that one as well, and has the exact same... 4/5 B. Edwards - See all my reviews, July 17, 2011

    Syma Military Helicopters

    I own all the Syma Mini Military helicopters. Here is my review for all 5.1. S108G Cobra. By Far the fastest and the most aggressive of the helicopters. This one takes a little bit of time to get used to and is for the more experienced flyer. Its super fast and super durable.2. S109G Apache. Another good helicopter from Syma. Runs the same as the Cobra. Fast and swift.3. S026G Chinook. A good beginner helicopter. Very stable in flight. It can be fast if you want it to be or it can be slow. This is one of my favorites out of the series.4. S102G Black Hawk. My brother has the S107G and this flies just like it. This is probably the best helicopter that syma makes. Extremely stable and can take a serious beating. (But so can all the others.) It will fly at the speed you want it to from slow to fast and takeoffs and landings are extremely smooth.5. S111G Coast Guard Rescue. This too is a fine product from syma. Super smooth flyer... 5/5 APR - See all my reviews = Durability:, June 22, 2012
    List Price: $79.99
    Price: $21.99
    You Save: $58.00 (73%)
    Great for Beginners
    Easy to Fly
    Stable Flight Characteristics
    Battery Type: Lithium Polymer (LiPO Battery)
    Motor Type: Brushed


Helicopters