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CLUB AIRCRAFT VH-IUM - Grob 103 Twin Astir II   General description Designer: Burkhart Grob Manufacturers: Grob-Werke GMBH Structure: fibre glass Airfoil: Airfoil: Eppler E603 Specifications Wingspan: 17.5 m Length: 8.18 m Height: 1.55 m Wing area: 17.80 m^2 Aspect ratio: 17 Empty weight: 380 kg Water Ballast none Gross weight: 580 kg max Wing loading: 32.6 kg/m^2 max Maximum L/D: 36.5 @ 51 kts solo, 37.0 @ 57 kts dual Minimum sink: 2.1 fps @ 43 kts solo, 2.3 fps @ 46 kts dual The Twin II is a two seater airplane with a T-tail, fitted with non retractable tandem undercarriage and upper surface air brakes. It is designed for training, high performance and simple aerobatics. The 'Twin' is sometimes called unkindly 'The Pig', but no matter what she is called she is the main training aircraft of the club and many pilots have fallen in love with gliding after a single flight in her. To the HFC she is a 'lady' worthy of respect. Some have said she is a 'gentleman's glider', I can but agree.