Grob G-102 Astir CS

The G102 Astir is a single seat glassfibre Standard Class sailplane, designed by Burkhart Grob and built by Grob Aircraft. It was the first Grob-designed sailplane, with the first flight in December 1974.

• Astir CS - The original production version of the Astir, produced up to 1976 (CS = Club Standard).
• Astir CS77 - Production aircraft from 1977, with revised fuselage profile and other modifications.
• Speed Astir - The Astir with a flapped wing to comply with the FAI 15m Flapped Class, for gliding competitions.
• Astir CS Jeans - Astir aircraft with faired fixed undercarriage, to comply with the Club Class for gliding competitions and to provide "glass-ship" experience at lower cost.
• G-102 Astir - Designation introduced by Grob for the Astir series in the 1980s, with each successive improvement given the suffix I,II or III etc.
• G-104 Speed Astir - The Speed Astir re-designated.

(Source Wikipedia).

Grob G-103 Astir Twin

The Grob G 103 Twin Astir was a two-seat sailplane developed in Germany in the 1970s by Grob Aircraft AG as a counterpart to the single-seat G 102 Astir then in production. Construction throughout was similar, although to preserve the balance of the design, the wings were given a slight forward sweep. While many two-seat derivatives of single-seat sailplanes have fixed undercarriage, due to the added space restrictions created by the second seat, Grob devised a novel retraction system for the Twin Astir. The single wheel was designed to rotate 90° sideways before retracting "flat" under the rear seat. This was only incorporated in early examples, later on, the wheel was fixed. Options offered to customers included whether the front seat should be equipped with flight instruments, and whether water ballast capacity should be installed.

• Grob G 103 - two-seat sailplane G 103 Twin Astir
• G 103 Twin II (also available in Acro version G 103a Twin II)
• The Grob Viking T1 was the UK military version of the G 103 Twin II.
• G 103C Twin III (also available in Acro versions)
• G 103C Twin III SL - The self-launching version, which is non-aerobatic, has an electrically actuated mast-mounted retracting engine and steerable nose wheel.

(Source Wikipedia).

N.V. Vliegtuigbouw Sagitta

Designed by engineer Piet Alsema the Sagitta first flew in 1961, after three years of planning. It has an all-wood fuselage and wooden wings with fabric cover. The Sagitta was the first "standard class" glider design to appear from the Netherlands. It was a modern high performance design with features like automatic connecting control surfaces on assembly and a backward sliding canopy that can be fixed open in flight at several positions.

Much more info here.

Standard Austria / Schemmp-Hirth HSK

The Standard Austria was a single-seat aerobatic glider that was originally designed and built in Austria from 1959 but production was moved in 1962 to Schempp-Hirth in Germany, where the Standard Austria's development continued with improved and heavier models, optional retractable undercarriage, replacement of the NACA section wings with wings using an Eppler 266 section, to improve low-speed performance.

• Standard Austria – Initial production model built in Austria.
• Standard Austria S - Production aircraft built by Schemp-Hirth under license in Germany.
• Standard Austria SH – Improved heavier model, 5 built.
• Standard Austria SH-I – The SH with retractable undercarriage
• Schempp-Hirth SHK - a 17 meter Open Class glider was developed by Klaus Holighaus in 1965 from the SH-1.

(Source Wikipedia).

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