Using a modeling knife, cut away and remove the covering material from over the two precut aileron servo lead exit holes in the bottom of the wing. Astroflight 115d acdc charger nimh align,associated,losi. Astroflight rc motor attached to one of matts single stage stage reduction unit. Keith shaw several decades ago based upon the older astro flight cobalt brushed motors. Astro motors represent the top rung of rc motor technology for those seeking to build the best ebike possible. The historic flight, powered only by sunlight, took place november 4, 1974 at fort irwin, california. It is powered by four astro 020 motors spinning top flite 5. Starting back in the early 70s bob and his brother roland developed the first practical electric propulsion systems for flight. Astro flight was awarded an darpa contract through lockheed in 1974 in order to build the sunrise, the worlds first solarpowered airplane. I recently bought an old top flight phasoar electric power glidersailplane kit and the plane was originally designed for the astro 035 cobalt motor. Electric motor handbook the why, what and how of electric motor theory and practice 14. One big difficulty with electric powered free flight has been accurately controlling the motor run.
This month they have announced the release of their largest motor yet, the 4535. Motors and batteries will be limited to a maximum of 40 amp current draw by means of a single 40 amp fuse per pack in the line from the positive terminal to the motor controller. This handbook of electric machines gives a highlevel orientation regarding the. This store is powered by shopsite web catalog software. These models flew but were not considered successful.
The next level of analysis, working draft jan 2000. Electric motor handbook by robert j boucher a must for the. Mar 01, 2001 from the electric motor handbook again, an astro 05g with the standard 2. It was a complete manual of electric propulsion systems at that time. Basically, it is two pieces of spruce, say 18 x 38, works. Astro flight makes a nice little plastic motor mount. These all electric contests included free flight, scale, pattern, and sailplane, as well as payload in the later years. Page 2discussion planetary gearbox for astro fai cobalt 035. Vintage electric flight motor astro flight 035 with graupner gearbox. We figured that if we could attain the same energy efficiency with our electric powered model it should be able to climb to altitude of about 3,000 ft. Robert and roland boucher, of california, founded astroflight inc. Jun 03, 2016 a general rule of thumb for electric powered flight was originated by dr. The ama history project presents biography of robert bob.
This motor, with a graupner 7x3 folding propeller unit. According to bob boucher in his electric motor handbook chapter 3 timing for sparkless commutation, over advancing motors is commonly done in racing motors where maximum power and maximum speed are all important. The amount of electrical resistance across any two of these three phases is the winding resistance. The first prototype was destroyed on its 28th flight by turbulence. And at 4500 bux for the motor and esc its quite the ebike deal. Shown below is one of their brushed motors that made them very successful. The model has a wing span of 60 inches and a wing area of 600 square inches and weighs 40 ounces. Data from project sunrise website general characteristics crew. This propulsion, then stateofart in the 1990s and using a 21cell nickel cadmium batteries, is considerably. Faa glider handbook and ostivrequirements for gliders. Ast803v astroflight brushless 020 direct drive airplane motor. All motors must be from the graupner or astro flight families of brushed electric motors, only motor should have manufacturers label visible to the judges during the technical inspection. Without the gear box, a snug fit is achieved by putting a strip of masking tape on the motor and pushing it into the motor mount for a snug friction fit.
To prevent the servo leads from pulling apart during assembly, or worse, during flight, secure the plugs together, using a short piece of 38 diameter heatshrink tubing. I just wanted to let you guys know that astroflight has a new controller out and. Astroflight 801 g geared brushless motor new with speed. Winding resistance has to do with the electrical resistance of the motor. Chapter 8 astro cobalt marine racing motors chapter 9 astro cobalt sport motors for airplanes chapter 10 astro fai competition motors getting this book was one of the key moments in my electric flight hobby. Here are the nuggests of truth and wisdom to help you begin to understand how to setup your e motor systems. The official website of personal and collective works by robert j. Later the kit was converted to electric power with installation of the astro 15 super ferrite motor powered by a twelve cell 600 mahr nicad battery. Astroflight, incorporated is a manufacturer of products for electric powered radio controlled. Roland bouchers 16 scale model of the fournier rf4 powered sailplane was designed for the os max 0.
Box shows surface wear noted consistent with its age. This problem is minimized by newly available electronic motor control profilers. Oct 08, 20 astroflight is a maker of highend rc motors and components for rchelicopters and model planes. His electrical design work, late hour company, and occasional. The amount of electrical resistance across any two of. The onset of vertical takeoff and landing vtol aircrafts will disrupt our cities and our daily lives in an unprecedented way. Fai electric team and provided motors for their models for a number of years. The astroflight sunrise was an unmanned experimental electric aircraft technology demonstrator and the first aircraft to fly on solar power first conceived in november 1970, the sunrise first flew on 4 november 1974 from bicycle lake, a dry lakebed on the fort irwin military reservation, california, united states. Rc drive the recumbent bicycle and human powered vehicle.
From the electric motor handbook again, an astro 05g with the standard 2. Electric motor handbook ast600 astroflight rc airplane. Its like a tube mounted on a plastic backplate mounted to a firewall. This motor, with a graupner 7x3 folding propeller unit and a sr or magnum 1250 mah battery pack 6cell. The wakefield model could reach an altitude of about 10% of the potential energy in the rubber motor.
Astroflight 5044 genuine replacement brushes for brushed motor. Climb rate was drastically improved at over 300 feet 91 m per minute as was the estimated service ceiling of 75,000 feet 23,000 m, although actual flights did not exceed 20,000 feet 6,100 m due to problems with both command. Getting started in electric flight an introduction and some basics. Electric motors suitable for rc flight must be light, yet be able to handle high. Astro flight price list page 2 electronic components motor armatures for airplanes quant stk 5020 5087. Astro flight 10 aircraft electric motor system airplane. Astro flight cobalt 25 electric motor for balsa rc model airplane. Ast805 astroflight 05 brushless motor remote controlled hobby. Astro flight cobalt 15 geared motor at f l y h o b b i e s. Hog by charles evans, is an electric version designed in the late 1990s, spanning 62 and designed for astro flight s geared cobalt 40 electric motor. In the case of 3phase brushless motors such as the astro flight 32xx series, the motors have three wires coming out of the housing, one for each phase.
My past two ebikes used off the shelf drive systems designed for electric. May 10, 2012 astro motors represent the top rung of rc motor technology for those seeking to build the best ebike possible. This motor handbook was created by infineon technologies ag together with. Astro flight glow and electric model kits roland bouchers. Astro flight cobalt 15 geared motor at f l y h o b b i e. This gives a pitch speed of about 41 mph, which is not high enough. Electric motor handbook ast600 astroflight rc airplane books. The complete manual of electric propulsion systems 52. Improvements included a single astro flight cobalt 40 motor powered by 4480 solar cells with an output of 600 watts. Call us now at 4072940012 for any questions about this product. Electric motor handbook ast600 astro flight rc airplane books. Astro flight was founded back in 1969 by electric motor guru bob boucher, with the intention of making high quality madeinusa motors for rc aircraft and even a few human powered aircraft. Two astro flight astro 40 ferrite motors powered the craft via a 6.
All of the latest technology has been employed in designing this model, starting with the silent, but powerful, astro flight cobalt 035 electric motor. I had to use the manual to figure out how to use it but it was pretty straightforward. Clancy aviation big bee instructions for assembly pdf. Astroflight 4535, their largest motor yet, 15kw 20hp. Over advancing a sport motor will cause excessive heating and failure if the motor is run at half throttle or less. Just a few weeks ago a large group of contestants turned out for the 14th annual astro flight electric contest which was held at the harbor soaring society field in costa mesa, california my home field, incidentally. Bob organized, and ran as contest director, a series of electric contests called the astro champs from 1975 to 1989. The history of electric powered rc planes astro flight. Capable of 15kw, the 4535 is the newest and largest motor in astro flights. The model won first at the astro flight model builder electric championships in january 1977.
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