Scanlan SG-1A explained

The Scanlan SG-1A is an American, single seat, pod-and-boom, high-wing, strut-braced glider that was designed by Thomas W. Scanlan in 1970 and sold in the form of plans for amateur construction.[1] [2]

Design and development

The SG-1 was conceived as a very simple and economical aircraft that could be built with modest construction skills and very little financial investment. The prototype was completed in 1970 for US$400 and subsequent aircraft were built for under US$1000.

The SG-1 is constructed with a welded steel fuselage and tail surfaces and covered with doped aircraft fabric. The wing is made from an aluminium structure, covered in aluminum sheet and features upper-surface spoilers and a modified Gö 549 airfoil. The landing gear is a monowheel with the forward fuselage protected by a skid. The airframe was static tested to 9g without failing.

With a very low stall speed of 320NaN0, pilots who have flown the aircraft claim that the SG-1 can fly a thermal inside a Schweizer SGS 1-26.

Operational history

In April 2011 there was one SG-1 and one SG-1A on the Federal Aviation Administration registry.[3]

Variants

SG-1
  • Prototype design, with V-struts and a constant-chord wing. One built.
    SG-1A
  • Improved model, with double-tapered wings and single wing struts. About four built.

    Aircraft on display

    Notes and References

    1. Web site: SG-1A Scanlan. 6 April 2011. Activate Media. 2006. dead. https://web.archive.org/web/20020506211342/http://www.sailplanedirectory.com/PlaneDetails.cfm?planeID=301. 6 May 2002.
    2. Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 18. Soaring Society of America, November 1983. USPS 499-920
    3. Web site: Make / Model Inquiry Results. 6 April 2011. Federal Aviation Administration. April 2011.
    4. Web site: Sailplanes, Hang Gliders & Motor Gliders. 26 May 2011. . 2010.

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