N.V. Vliegtuigbouw 013 Sagitta Explained

The N.V. Vliegtuigbouw 013 Sagitta (English: Arrow) is a Dutch mid-wing, single-seat Standard Class glider designed by Piet Alsema and produced by N.V. Vliegtuigbouw.[1] [2] [3] [4]

The aircraft is reported by different sources under a variety of different names and designations. Sources label it the Alsema Sagitta, Vliegtuigbouw Sagitta, N.V. Vliegtuigbouw 013 Sagitta, Dutch Sagitta, N.V. Vliegtuigbouw Sagitta 013 and N.V. Vliegtuigbouw Sagitta-013. The US type certificate erroneously lists it as the N.V. VLIEGTUIGBOUW Segitta (sic) 013 and catalogs it in their database under Vilegtuigbouw (sic), N.V., 013.

Design and development

The Sagitta was designed by Alsema between 1957-61 specifically for the then-new FAI Standard Class. Like other early standard class gliders it was quickly surpassed in performance by newer fibreglass aircraft.

The Sagitta has a wooden structure. The fuselage is covered with plywood, the wings and tail surfaces with plywood and doped aircraft fabric covering. The 151NaN1 span wing features top and bottom air brakes and employs NACA 63-618 airfoil at the wing root, and a NACA 4412 section at the wing tip. The controls are automatically connected on assembly. The bubble canopy slides aft for cockpit access and can be locked open in several positions in flight. The landing gear is a fixed monowheel.[5]

In the Netherlands the aircraft was certified for cloud flying and aerobatics, but its US certification does not include these authorizations. The type received its US type certificate on 2 August 1965.

Twenty Sagittas were built.

Operational history

In July 2011 six Sagittas were still registered with the US Federal Aviation Administration.

Variants

Sagitta: Prototype first flown on 4 July 1960.[6]
  • Sagitta 2:[6] FAI Standard Class model with 151NaN1 wingspan.
  • Super Sagitta
  • FAI Open Class model with 171NaN1 wingspan[7]

    Aircraft on display

    References

    External links

    Notes and References

    1. Web site: Sagitta Vliegtuigbouw. 20 July 2011. Activate Media. 2006. https://archive.today/20130208175505/http://www.sailplanedirectory.com/PlaneDetails.cfm?PlaneID=282. 8 February 2013. dead.
    2. Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 96, Soaring Society of America November 1983. USPS 499-920
    3. Web site: Type Certificate Data Sheet No. G7EU. 20 July 2011. Federal Aviation Administration. August 1965.
    4. Web site: Make / Model Inquiry Results. 20 July 2011. Federal Aviation Administration. July 2011.
    5. Web site: The Incomplete Guide to Airfoil Usage. 1 July 2011. Lednicer. David. 2010. https://web.archive.org/web/20100420012244/http://www.ae.illinois.edu/m-selig/ads/aircraft.html. 20 April 2010. dead.
    6. Book: Taylor, John W.R. FRHistS. ARAeS. Jane's All the World's Aircraft 1962-63. 1962. Sampson, Low, Marston & Co Ltd. London.
    7. Rogers, Bennett: 1974 Sailplane Directory, Soaring Magazine, page709. Soaring Society of America, August 1974. USPS 499-920
    8. Web site: Collectiestuk a-f.pdf. 20 July 2011. Aviodrome. n.d.. https://web.archive.org/web/20100331085542/http://www.aviodrome.nl/uploads/files/projectenpdf/Collectiestuk%20A-F.pdf. 31 March 2010. dead.

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