|National origin||United States|
|Manufacturer||Sailplane Corporation of America|
|Designer||William G. Briegleb|
|Number built||3 completed aircraft, 20 kits|
|Developed from||Briegleb BG-6|
The Briegleb BG-7 is an American strut-braced high-wing, single seat glider that was designed by William G. Briegleb and produced by the Sailplane Corporation of America as a completed aircraft and also as a kit.
Design and development
The BG-7 wing is made from wood structure, with two spars and covered in doped aircraft fabric. The wing is supported by dual struts. The fuselage is made from steel tube, again with fabric covering and the tail is metal and fabric. The longer wing created stability issues and many aircraft were subsequently modified by either lengthening the tail to increase the tail arm or enlarging the vertical fin. Cockpit modifications were also common.
In 1952 Betsy Woodward Proudfit, flying a BG-7, set the feminine speed record for the 100 km (62 mi) triangle, at 28.64 mph (46.09 km/h). The record stood for eighteen years.
- Crew: one
- Wingspan: 40.25 ft (12.27 m)
- Wing area: 123 sq ft (11.4 m2)
- Aspect ratio: 13.1:1
- Airfoil: NACA 4412
- Empty weight: 250 lb (113 kg)
- Gross weight: 500 lb (227 kg)
- Maximum glide ratio: 20:1 at 40 mph (64 km/h)
- Rate of sink: 174 ft/min (0.88 m/s) at 36 mph (58 km/h)
- Wing loading: 4.1 lb/sq ft (20 kg/m2)
|Wikimedia Commons has media related to Briegleb aircraft.|
- Activate Media (2006). "BG-7 Briegleb". Archived from the original on 22 March 2012. Retrieved 27 March 2011.
- Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 7. Soaring Society of America, November 1983. USPS 499-920
- Federal Aviation Administration (March 2011). "Type Certificate Data Sheet Search". Retrieved 29 March 2011.
- Federal Aviation Administration (March 2011). "Make / Model Inquiry Results". Retrieved 29 March 2011.