Mark III (oz11084)

 

Mark III - plan thumbnail image

About this Plan

Mark III. Radio control sport model.

Quote: "NOTES ON MULTI. Picture shows the third of the series of test airplanes used for the experiments; plan, next page. Babcock system detailed in Part Three.

Although the purpose of these articles was to record findings in multi-control, a by-product was three airplane designs. Third is of interest. Mark III has adequate area. Babcock three-channel receiver, Bonner trim-servo, Babcock compound for rudder, engine. Bramco throttle. NACA 2412 airfoil enhances maneuverability, helps ship stay where trimmed.

With Babcock, five intermediate batteries, K-45 B battery, weight, 7.5 lb; wingloading, 18.5 oz; powerloading, 342 oz. Plenty of power on .35. Fuel consumption high for rich-mixture low speeds: several Walker tanks needed. On Bramco throttle, two tanks placed in belly would be adequate.

Battery complement is heaviest combination because of testing problems: could be lightened. Batteries behind firewall, receiver forward of CG, so be careful of changes. Rear fuselage, tail can be lightened for balance; actuators, etc, moved into forward half cabin if radio leaves room. "

Mark III, MAN, April 1956.

Direct submission to Outerzone.

Supplementary file notes

Article pages, thanks to RFJ.

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Mark III - completed model photo

Datafile:
  • (oz11084)
    Mark III
    from Model Airplane News
    April 1956 
    72in span
    Tags: IC R/C Cabin
    all formers complete :)
    got article :)
  • Submitted: 08/04/2019
    Filesize: 1985KB
    Format: • PDFbitmap
    Credit*: Circlip, RFJ

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