What Are Multicopters And Quadcopters?

Source: http://www.fpvmodel.com/blog/what-are-multicopters-and-quadcopters-_show30.html

Multicopters are now very popular with the FPV community. The leading companies in FPV community, like DJI, Parrot and 3D Robotics, are all manufacturing and selling multicopters.

DJI Spreading Wings S900 Hexacopter

DJI SPREADING WINGS S900 HEXACOPTER $1,399.99
A MULTIROTOR OR MULTICOPTER IS A ROTORCRAFT WITH MORE THAN TWO ROTORS. AN ADVANTAGE OF MULTIROTOR AIRCRAFT IS THE SIMPLERROTOR MECHANICS REQUIRED FOR FLIGHT CONTROL. BECAUSE OF THEIR HELICOPTER LIKEFLIGHT CHARACTERISTICS, MULTI-COPTERS OFFER A TOTALLY DIFFERENT EXPERIENCE TOPLANES. UNLIKE SINGLE- AND DOUBLE-ROTOR HELICOPTERS WHICH USE COMPLEX VARIABLEPITCH ROTORS WHOSE PITCH VARIES AS THE BLADE ROTATES FOR FLIGHT STABILITY ANDCONTROL, MULTIROTORS OFTEN USE FIXED-PITCH BLADES; CONTROL OF VEHICLE MOTION ISACHIEVED BY VARYING THE RELATIVE SPEED OF EACH ROTOR TO CHANGE THE THRUST AND TORQUE PRODUCED BY EACH.

The ability to slowly approach a subject,hold its position and turn on its own axis opens the airframes up to lots ofcircumstances a plane can not cater for. If you have not flown a helicopter orplane before it is probably the hardest of all disciplines to learn as abeginner. Multicopters are very varied in build, configuration and control.

Due to their ease of both construction andcontrol, multirotor aircraft are frequently used in model and radio control aircraft projects in which the names quadcopter, hexacopter and octocopterarefrequently used to refer to 4-, 6- and 8-rotor helicopters, respectively.

The Quad Copters are extremely popular. It is a multirotor helicopter that is lifted and propelled by four rotors. Quadcopters are classified asrotorcraft, as opposed to fixed-wing aircraft, because their lift is generatedby a set of rotors (vertically oriented propellers).

With 4 legs as the name suggests they require no yaw mechanism. They are available in two layouts a + configurationwith the front leading leg being straight ahead, or the much more popular andFPV friendly X configuration with the two leading legs being 45 degrees to theleft and right of the front of the platform. The platform is very stable whensetup well, it can be very acrobatic too compared to the Tri Copter. Becauseits symmetrical most pilots have different coloured front legs to back to aid orientation.It is very good at carrying a decent amount of payload, and flight times can be15 mins + at times, but 6 – 10 normally depending on weight, motor and propchoice.

Unlike most helicopters, quadcopters use 2sets of identical fixed pitched propellers; 2 clockwise (CW) and 2counter-clockwise (CCW). These use variation of RPM to control lift and torque.Control of vehicle motion is achieved by altering the rotation rate of one ormore rotor discs, thereby changing its torque load and thrust/lift characteristics.

Generally the more rotors, the more motors,the more stable and the more you can carry in weight.

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Save Up to $800.00 on High-end Quadcopters from FPV Model

FPV Model launched a promotion campaign for Free Flight X4 and Free Flight X8 last week. Thanks to our customers’ continuous support, many were sold out.

Both Free Flight X4 and Free Flight X8 are superb aearial platforms designed for use with professional cameras that require a heavy lift multirotor.

Although the promotion campaign has ended, we still receive many inquiries about these high-end quadcopters. Therefore, we’d like extend the special offer for a longer duration of time.

Now, customers who buy Free Flight X4 or Free Flight X8 high-end quadcopter will get a free Naza V2 flight controller.

The original price for Free Flight X4 is US$1299.00, price for Naza V2 flight controller is US$319.90. But now a free flight X4 with naza v2 only cost US$1104.15. It means you’ll save about $515 on this high-end quadcopter.

 

The original price for Free Flight X8 is US$1899.00, price for Naza V2 flight controller is US$319.90. Now a free flight X8 with naza v2 only cost US$1405.26. It means you’ll save more than $800 on this high-end quadcopter.

Don’t miss this opportunity and take advantage of this special offer. Check these high quadcopters at:

Or you can follow the discussion on RCGroups: http://www.rcgroups.com/forums/showthread.php?t=2211112.

Apology for Delay Shipping of ZMR250 ARF Packages

Hello guys, thank you very much for purchasing the Promotional ZMR250 Mini Quadcopter ARF package from FPV Model.

In the past 10 days, many sets of these ARF packages were sold out. Due to the 7 days public Chinese National holiday, we failed to ship some of the ARF orders in time. Please accept our apology for the delay. We will honor all orders placed at the promotional price and extend the offer for a longer duration of time.

We are now trying our best to ship all the orders within 5 days. Appreciate so much for your patience and thanks for your kind understanding.

http://www.fpvmodel.com/zmr250-250mm-mini-quadcopter-fpv-arf_g762.html

ZMR250 250mm Mini Quadcopter FPV ARF Package Sold at US$199.99

Only US$199.99 for a whole FPV ARF package!!!

Three options of flight controller: Naze 32 Acro, Naze 32 Full, or the CC3D.

The FPV ARF Package is now available at http://www.fpvmodel.com/zmr250-250mm-mini-quadcopter-fpv-arf_g762.html.

An affordable Mini ARF package that comes complete with heat shrink, cable sheathing, FC w/ PID settings and full FPV gear for the quad frame. What do you think? Refer to my previous post http://fpvplane.blogspot.hk/2014/09/an-affordable-mini-arf-package-will-be.html 

This FPV ARF package comes with ZMR250 carbon fiber frame. 250mm. Carbon Fiber has a nice sheen to the finish and all tooling edges are nice and smooth. Using Dragonfly MC1806 2300kv Mini Motors.
All up weight 498g.
This is a ZMR250 FPV ARF combo, It includes almost everything you need for your building work with ZMR250. Don’t worry what you need and just enjoy the  building process, we provide you with a promotion price and make sure you will get a perfect flying experience with our ARF package.
Package Includes:
Battery velcro straps x 2
5.8G clover 3-leaf TX antenna x 1
3M double sided adhesive tape x1
Also, silicon wires, straps, shrink tubes, T-plug etc that everything as showed in above pictures.
What else you need (choice which you prefer from our website):
Radio, battery (3s 1300-2200mah), receiver and monitor.

ZMR250 250mm Carbon Fiber Mini FPV Quadcopter Frame Kit on Hot Sale

zmr250-package

zmr250-package-3 zmr250-package-2 zmr250-package-4

ZMR250 is a light weight, small size mini quadcopter with long flight time and easy to refit. The frame body with 1.5mm carbon fiber plate and the frame-arm also adopts 3mm carbon fiber plate, it ensures the strength and reduces the vibration when flying.Adopting the aluminum alloy column for connecting, make the plane more firm.


Now, ZMR250 is only sold at a price of US$33.60 ea. 

Descriptions:

Arm plate thickness: 3mm

Main material: carbon fiber

Wheelbase: 250mm

Weight: 113g (without screws), 143g (with screws)

With rubber damper to decrease vibration during flight.

Aluminum alloy spacer, light weight, reliable.

Recommended parts (package not include):

Propeller: 5-6 inch

Motor: 1806-2208 series 1800-2200KV

ESC: 8A-12A

Battery: 1300Mah-2200Mah check here

Package included:

1 x ZMR250 Mini Quadcopter Multicopter Frame Kit

4 x damping ball