Hummel Ultracruiser Explained

The Hummel Ultracruiser (also variously called the Ultra Cruiser and UltraCruiser) is an American amateur-built aircraft, designed by Morry Hummel and produced by Hummel Aviation. The aircraft is supplied as a kit or plans for amateur construction or as a complete ready-to-fly aircraft.[1] [2]

Design and development

The Ultracruiser is a development of the heavier Hummel Bird, designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of 2540NaN0. The aircraft has a standard empty weight of 2490NaN0.[3] [4]

The Ultracruiser features a cantilever low-wing, a single-seat open, or optionally enclosed, cockpit that is 23.50NaN0 wide, fixed conventional landing gear, or optionally tricycle landing gear and a single engine in tractor configuration.[1]

The aircraft is made from sheet aluminum. Its 251NaN1 span wing employs a Harry C. Riblett GA30-618 airfoil and has an area of 112square feet. The aircraft's recommended engine power range is 28to and standard engines used include the 370NaN0 1/2 VW four-stroke powerplant. Construction time from the supplied kit is estimated as 420 hours.[1] [3] [5]

Operational history

By December 2011 100 examples had been completed and flown.[1]

Variants

Ultracruiser
  • Base model for the US FAR 103 Ultralight Vehicles category, powered by a 370NaN0 1/2 VW.[1] [2]
    Ultracruiser Plus
  • Model for larger and heavier pilots, powered by a 600NaN0 Volkswagen air-cooled engine, for the US experimental amateur-built category.[2] [6]

    Notes and References

    1. Vandermeullen, Richard: 2012 Kit Aircraft Buyer's Guide, Kitplanes, Volume 28, Number 12, December 2011, page 56. Belvoir Publications. ISSN 0891-1851
    2. Tacke, Willi; Marino Boric; et al: World Directory of Light Aviation 2015-16, page 111. Flying Pages Europe SARL, 2015.
    3. Web site: The UltraCruiser . 14 November 2012 . Hummel Aviation . 2007 . dead . https://web.archive.org/web/20121124083046/http://www.flyhummel.com/ultra_cruiser.htm . 24 November 2012 .
    4. Sport Aviation. March 2016. 8. Misidentified Hummel.
    5. Web site: The Airfoil Adventures of Harry Riblett. Scott. Spangler. July 19, 2013 . https://web.archive.org/web/20210612150622/https://www.kitplanes.com/the-airfoil-adventures-of-harry-riblett/. 12 June 2021. live.
    6. Web site: The Ultra Cruiser Plus . 14 November 2012 . Hummel Aviation . 2007 . dead . https://web.archive.org/web/20121125070008/http://www.flyhummel.com/ultra_cruiser_plus.htm . 25 November 2012 .

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