lipo batteries
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Nitro-powered Thunder Tiger Raptor 60
Electric-powered Venom Air Corps Ocean Rescue
Electric-powered Align T-rex 450SE
This Heli-Max Axe Micro CX model helicopter is an example of a micro-sized coaxial model. Note the size comparison with the cellular telephone at right.
Radio Controlled helicopters (also RC helicopters) are model aircraft which are distinct from RC airplanes because of the differences in construction, aerodynamics, and flight training. Several basic designs of RC helicopters exist, some more maneuverable than others (such as helicopters with collective pitch). The more maneuverable designs are often harder to fly, but benefit from greater aerobatic capabilities.
Flight controls allow pilots to control the collective and throttle (usually linked together), the cyclic controls (pitch and roll), and the tail rotor (yaw). Controlling these in unison enables the helicopter to perform most of the maneuvers an aeroplane can do, and many that aeroplanes cannot, such as hovering and backwards flight; in this manner, they are quite similar in operation to full-sized helicopters.
The various helicopter controls are affected by means of small servo motors. A piezoelectric gyroscope is typically used on the tail rotor (yaw) control to counter wind- and torque-reaction-induced tail movement. This “gyro” does not apply a mechanical force, but rather, electronically adjusts the control signal to the tail rotor servo.
The engines used are typically methanol-powered two-stroke motors, but gasoline, jet turbine and increasingly electric brushless motors combined with a high-performance lithium polymer battery are also used.
Types of R/C helicopters
Power sources include:
Nitro (nitromethane-methanol internal combustion)
Electric
Gas turbine
Petrol / gasoline
Mechanical layouts include:
CCPM in all power sources
Fixed-pitch electric
Coaxial electric
Nitro helicopters are currently more common than electric helicopters. Practical electric helicopters are a relatively recent development and are rapidly developing and becoming more common. Gas-turbine helicopters are also increasing in popularity, although the high cost puts them out of reach of most people.
Nitro
Nitro helicopters come in different sizes: 15, 30, 50, 60 and 90 size. These numbers originated from the size of nitro engine used in the different models (0.30 cu in, 0.50 cu in and so on). The bigger and more powerful the engine, the larger the main rotor blade that it can turn and hence the bigger the aircraft overall. Typical flight times for nitro helicopters is 7-14 minutes depending on the engine size and tuning.
Electric
Recent advancements in battery technology are making electric flying more feasible in terms of flying time. Lithium Polymer (LiPo) batteries are able to provide the high current required for high performance aerobatics while still remaining very light. Typical flight times are 4-12 minutes depending on the flying style and battery capacity.
In the past electric helicopters were used mainly indoors due to the small size and lack of fumes. Larger electric helicopters suitable for outdoor flight and advanced aerobatics have become a reality over the last few years and have become very popular. Their quietness has made them very popular for flying sites close to residential areas and in places such as Germany where there are strict noise restrictions. Nitro helicopters have also been converted to electric power by commercial and home made kits.
The smallest remote-controlled production model helicopter made (Guinness World Records 2006) is the Picoo Z sold at many toy stores (although this is infrared controlled, not radio), electronics stores and internet stores, costing about $30 (?15). The next smallest is the Mosquito counter-rotating blade helicopter, which is also a battery-operated R/C helicopter.
Several models are in contention for the title of the smallest non-production remote-controlled helicopter, including the Pixelito family of micro helicopters, the Proxflyer family, and the Micro flying robot.
A recent innovation is that of coaxial electric helicopters like the aforementioned Mosquito. The system’s inherent stability has, in recent years, made it a good candidate for the design of small models for beginner and/or indoor use. Models of this type, as in the case of a full-scale helicopter, eliminate rotational torque and extremely quick control response, both of which are very…(and so on) To get More information , you can visit some products about promotion gift;porcelain mug, disposable juice cup, . The Rechargeable Battery Heated Stadium Seat Cushion & Bench Warmer products should be show more here!
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Article Source: ArticlesBase.com – Radio-controlled helicopter
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DEWALT DCB120 12-Volt Max Lithium-Ion Battery Pack $81.70 Battery attaches to the bottom of the 12V MAX tools. Battery charges in only 40 minutes. Tools are able to stand up on battery pack…. |
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DEWALT DC9360 36-Volt Lithium-Ion Battery Pack $142.00 The DC9360 Heavy-Duty 36-volt battery showcases DeWalt’s exclusive NANO Technology and is compatible with a full compliment of tools in the DeWalt 36-volt system. This innovative 36-volt NANO-phosphate lithium-ion battery weighs just 2.4 pounds, the same amount as a traditional 18-volt battery, while offering improved run time, more power, and a longer overall life–up to 2,000 charges. Its capabi… |
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Hyperion EOS Sentry Battery Checker $26.95 EOS Sentry Battery Checker… |
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Maha Powerex MH-96V230 9.6V 230mAh Rechargeable NiMH Battery $11.47 PowerEx 9V (MH-96V200) have 9.6V true capacity, compare PowerEx 9V batteries against many other batteries and you will see that they really are in a class of their own…. |
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Li-Ion 18650 7.4V Tenergy 2200mAh Rechargeable Battery module with PCB $17.49 Features and Benefits * High quality 7.4 V Li-Ion rechargeable battery pack |
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5 CELL 18.5V 4000 mAh 30 LIPO Kokam 30C LiPo Battery Packs. 4000 mAh packs, discharge at up to 120 amps… |
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Watt’s Up RC Watt Meter & Power Analyzer WU100 Version 2 — SALE! $54.00 # Specifications: # Voltage 0-60 V, resolution 0.01 V. That’s a 14 cell series li-poly pack! # Current 0-100 A peak, 50 A continuous, resolution 0.01 A # Charge 0-65 Ah, resolution 0.001 Ah. That’s ~32 Amps for two hours! # Power 0-6500 W, resolution 0.1 W. That’s ~8.7 Horsepower! # Energy 0-6500 Wh, resolution 0.1 Wh. # Operates from 4.0-60 V, 0 V with optional receiver battery pack # 16 x 2 STN… |
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DX10t 10-Channel Transmitter/Receiver Only, Mode 2 $1,099.99 The Spektrum DX10t is an extremely light-weight, universal-application, high-end tray radio. The DX10t is a modular design, so customizing its switch layout for the proper application means no matter what kind of modeler there is, the 10t has everyone covered. It features the next evolution of Spektrum?s AirWare software, which has been thoroughly refined and expanded, offering modelers a level o… |
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Music Power 0900-72 Encore Dual Port USB AC Charger with Rechargeable Extended Battery $49.99 Wireless Portable Power & 2 power sources in 1! Power up your USB chargeable device when an outlet or computer is unavailable. Built-in rechargeable extended battery – Keeps the video & music playing longer – provides power when you have none! Includes 2 USB ports to charge iPods Zune Blackberry’s and more…. |
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Bastens LiPo battery upgrade for the Parrot AR.Drone- a high capacity alternative replacement battery – 15 to 20 minute flight time - $39.95 Looking for more flight time than a LiPo battery upgrade is the way to go. With this high capacity battery you will get 15 to 20 minute flight time! This battery not only higher capacity but it does so with no weight gain. By getting rid of the heavy hard case that the original stock battery has and substituting it with a tough plastic shrink wrap case. Remember you can charge this battery with th… |
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EZ-Peak NiCad / NiMH Charger with Traxxas Connector $32.48 The EZ-Peak is equally at home on the bench with AC power, or in the field with a DC power source. A Traxxas High- Current Connector is installed for use with Traxxas Power Cell battery packs and other NiCd and NiMH packs with Traxxas connectors (an adapter (#3062) is sold separately for use with Molex/Tamiya-style connectors…. |
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150mAh 1S 3.7V 25C LiPo Battery $3.99 This is E-flite’s 150mAh 25C LiPo Battery for the Blade MCX and mSR Micro Helicopters. Decrease your down-time and increase your stick time by stocking up on more E-flite Lipo batteries now!… |
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LiPo Battery CHARGER … |
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Wii InCharge Dual Charge Station $14.95 The InCharge for Wii is an inductive charging station. The InCharge charging station the only solution that works with the Nintendo Wii with the silicon skins on the remote…. |
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PSP 3000 2000 Rechargeable Battery Pack Charger $67.70 ·High-capacity Li-ion battery intended for uninterrupted play on PSP 2000/3000 game consoles ·Mountable on the back of the game console ·Over-charge protection ·Light, compact and highly portable, great companion for international students and business traveler who happen to be game fanatics! ·Available in pearl white, mystic silver, candy red, turquoise green, cobalt blue, and piano blac… |
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PSP 3000 2000 Li-ion Battery Charger Cobalt Blue $67.70 ·High-capacity Li-ion battery intended for uninterrupted play on PSP 2000/3000 game consoles ·Mountable on the back of the game console ·Over-charge protection ·Light, compact and highly portable, great companion for international students and business traveler who happen to be game fanatics! ·Available in pearl white, mystic silver, candy red, turquoise green, cobalt blue, and piano blac… |
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Sea-Doo SD6545X VS Supercharged Plus Sea Scooter $479.99 Push your diving experience to a new level of excitement with the Sea-Doo Vs. Supercharged Plus seascooter. The Vs. Supercharged Plus seascooter is ideal for serious scuba environments. The seascooter runs at a speed of up to 3 miles per hour at a depth of up to 100 feet. As a result, the Vs. Supercharged Plus makes the ultimate dive propulsion vehicle, so much so that the device was rated number… |
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Tenergy LiPo Battery Power Level Tester & Alarm $3.99 A great and neat tool to have. Always keep your lipo charged, and when it is low power or running weak stop using it to recharge.Help prevent damage to your expensive LIPO battery and prolong it’s battery life by never letting the voltage drop too low. Great support device for any LIPO pack. Purpose and Features: Specification: Caution: Lipo Battery safety: Lithium Polymer batteries are volat… |
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Tenergy Balance Charger for Li-Po / Li-Fe 3.2v-14.8v Airsoft Batteries $21.99 Tenergy Balance Charger for Li-Po / Li-Fe 3.2v-14.8v Airsoft Batteries Features: Specifications Warning – Do Not charge the following types of battery: Lipo Battery safety: Lithium Polymer batteries are volatile. Failure to adhere to established charging guidelines may result in fire, personal injury and damage to property if charged or used improperly. By purchasing this product, the bu… |
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UltraFire 18650 3000mAh 3.7V Rechargeable Li-Ion Battery (Pair) + Charger Combo $7.96 Indicator light lets you know when charging is complete. Designed to charge your batteries quickly and safely. Input Voltage: 110-240V, 47-63Hz Output: 4.2V 600mA Charges 1 or 2 batteries simultaneously Dimensions: 3.34 in x 1.85 in x 1.49 in Weight: 2.46 oz. Ultrafire Li-Ion Rechargeable 18650 with IC Protection. Capacity: 3000mAh. Voltage: 3.7V. Can be used in laser pointer,Torch Flashlights an… |
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Nokia BP-4L Standard Battery for Nokia N97, E63, E71, E71x, E72, E73, E90, N810, and WiMax $9.99 Compact and lightweight, this 1500 mAh Li-Polymer battery provides long-lasting power for your cell phone…. |
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Parrot AR.Drone Battery LiPo Replacement Battery $22.97 The battery is a 3 cells high grade Lithium-Polymer battery, with a capacity of 1,000 mAh at 11.1 volts and a discharge capacity of 10C. It includes a PCM (Protection Circuit Module) which protects the battery against over charge, over discharge and short circuits. The battery is protected by a rigid casing, and complies with UL2054 safety standards. It has two connectors: one discharge connector… |
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Bluecell Black color Large & Medium Size Lipo Battery Guard Sleeve/Bag for Charge & Storage + Free Bluecell Cable Tie $13.99 The lipo guard bag is intended to reduce the chances of damage in the event of a lipo fire. 1 x Large Size Lipo Guard Bag + 1 x Medium Size Lipo Guard Bag…. |
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Parrot AR.Drone Replacement Battery Charger with Power Supply $34.99 This kit includes – One (1) power supply (13,5V/0.9A Output) – One (1) balance LiPo charger that allows a precise charging of the LiPo battery, managing the charge of each of the 3 cells separately with a 1A max current and maintaining optimum voltage level. – Four (4) power plug adapters (for the US, UK, EU, Australia, New Zealand, Japan)…. |
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Arduino Fio $24.95 Arduino Fio… |
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DEWALT DCB120 12-Volt Max Lithium-Ion Battery Pack $81.70 Battery attaches to the bottom of the 12V MAX tools. Battery charges in only 40 minutes. Tools are able to stand up on battery pack…. |
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DEWALT DC9360 36-Volt Lithium-Ion Battery Pack $142.00 The DC9360 Heavy-Duty 36-volt battery showcases DeWalt’s exclusive NANO Technology and is compatible with a full compliment of tools in the DeWalt 36-volt system. This innovative 36-volt NANO-phosphate lithium-ion battery weighs just 2.4 pounds, the same amount as a traditional 18-volt battery, while offering improved run time, more power, and a longer overall life–up to 2,000 charges. Its capabi… |
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Hyperion EOS Sentry Battery Checker $26.95 EOS Sentry Battery Checker… |
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Maha Powerex MH-96V230 9.6V 230mAh Rechargeable NiMH Battery $11.47 PowerEx 9V (MH-96V200) have 9.6V true capacity, compare PowerEx 9V batteries against many other batteries and you will see that they really are in a class of their own…. |
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Li-Ion 18650 7.4V Tenergy 2200mAh Rechargeable Battery module with PCB $17.49 Features and Benefits * High quality 7.4 V Li-Ion rechargeable battery pack |
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5 CELL 18.5V 4000 mAh 30 LIPO Kokam 30C LiPo Battery Packs. 4000 mAh packs, discharge at up to 120 amps… |
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Parrot AR.Drone Battery LiPo Replacement Battery $22.97 The battery is a 3 cells high grade Lithium-Polymer battery, with a capacity of 1,000 mAh at 11.1 volts and a discharge capacity of 10C. It includes a PCM (Protection Circuit Module) which protects the battery against over charge, over discharge and short circuits. The battery is protected by a rigid casing, and complies with UL2054 safety standards. It has two connectors: one discharge connector… |
