The Space Plane was originally sold in 1961 as the first mass-produced boost glider kit, Estes number K-3. It features some somewhat complex aspects to achieve the transition from boost to glide–spin tabs for rotational stability, and elevons locked in horizontal trim by the motor, which spits out enabling them to spring upward.
The first cc: version of the kit was based upon an ST-7 tube size (0.759″ OD), but in the xKit offering it now matches the original Estes BT-30 tube (0.767″ OD). The kit retails for $11.50.
- 03/11/2005 – Purchased Semroc Space Plane from NARCON 2005 for $0.00 (Retail $9.50)
- 10/21/2006 – Scanned and photographed components. Measurements recorded on page 48 Book #3.