The Twin Astir was a two-seat development of the Standard Class Astir CS. The gear retracts by folding up to the left and lying horizontally under the rear seat. A 3.3 degree forward wing sweep was replaced by a straight wing with leading edges at right angles to the fuselage centerline early in the production…
The G-103 A Twin II was the successor of the Twin Astir with a nose wheel and a fixed six-inch main gear fitted behind the center of gravity in a fairing. The main wheel is equipped with a hydraulic brake. Modified ailerons produce a substantially improved roll response. Approach control is by top surface Schemmpp-Hith…
The G 103 C Twin III is a development of the Twin II with a new ‘Discus’ plan wing of slightly increased span and modified airfoil section. The cockpit has detailed improvements including better ventilation, relocated airbrake levers to give better purchase, and canopies restrained by gas-filled struts. The unpowered sailplane is cleared for aerobatics…
The Speed Astir II was developed from the earlier Standard Class Astir family as Burkhart Grob’s first entry into the 15 m. racing class. It features a flexible material which in effect was the hinge, (The stiffness was maintained by a series of rollers running in channels) for flaps and ailerons, which are mounted on…
The self-launching side-by-side G 109 cruises under power better than 124 mph and has a cruising range in excess of 500 miles. Approach control is by airbrakes. A G-109 has held the world motorglider record for absolute alitude (6,406 m. /21,018 ft.) and Altitude Gain ( 5,042 m. / 16,544 ft.). The Grob G 109…
The Astir CS Jeans was of similar configuration to the CS 77, but with fixed wheel located ahead of the center of gravity, and a tailskid. This was followed by the Club II with similar fixed gear. The Club III has a fixed main gear ahead of the center of gravity, and a tailwheel. The…
The Astir CS (club standard) was the first sailplane designed and serially produced by Grob. It features composite (fiberglass/resin) construction, a large wing area, a T-tail and water ballast. A Standard Class Sailplane, the large wing area gives good low speed handling characteristics. The main gear retracts. A slightly improved version, the CS-77, was introduced…