Supplementary file notesĭid we get something wrong with these details about this plan (especially the datafile)? If the plane is tail heavy it never finds the groove, and the flier has his hands full just flying the model."ĭirect submission to Outerzone. The CG also plays an important part here. Therefore, once the airplane is 'in the groove,' it stays there. The lifting horizontal stabilizer keeps the airplane from climbing when headed into the wind, and has little or no effect downwind. This, combined with the weather-vaning effect, counteracts the yawing tendency. The large fin allows the wind force to work on an area aft of the CG as well as forward of it. This sets up the yawing oscillations which add drag to the model and sometimes cause the engine to run lean and rich on opposite sides of the circle. The wind, force is normally first on one side of the cowl and then the other as the airplane follows its circular path. I feel that it offsets the yawing oscillations caused by the cowl when flying in the wind. Such a large vertical fin on a speed model has evoked, much comment. In order to maintain these, characteristics, the placement of the CG and the design of the empennage must be followed closely. Although it is sometimes difficult to design an airplane which will practically fly itself and still be responsive to controls in emergency situations, the Top CAT does both of these well. This consistent record of winning performances has been due to the plane's ruggedness and flying stability, even in the worst wind. has been used successfully by speed fliers in all three age classes. The design has also held the junior record. After replacing the wing, it captured the open C record the following week. In the one meet where it failed to place, the Mono-line handle broke and the plane was wrecked. In its very first contest, the 1962 Nationals in Chicago, the design won first place in the senior and open classes. The new version won first places in two of the three contests in which it has been flown. The 1962 model incorporates several minor changes which helped to set an amazing AMA record of 171.20 mph in the Open class. In five years of flying, the original Top CAT has won 28 trophies. My first C speed model of this type was built that year and is still used today for test flying. The Top CAT is an evolutionary design dating back to 1958. The Sixties Winningest Class C Speed Model: Top Cat, by Clifford Telford.
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