Grob G 115

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G 115
Grob G 115E Tutor
Type Basic trainer
Manufacturer Grob
Maiden flight November 1985
Introduction 1999
Status Active
Primary user RAF

The Grob G 115 is an advanced general aviation airplane, primarily used for flight training. The E variant is in RAF service as an elementary flying trainer where it is known as the Grob Tutor.

Contents

[edit] Design

The aircraft is constructed of advanced composite materials and each wing is a single piece. It has a fixed Tricycle undercarriage with spatted wheels, a short nose bearing the engine and a 3-bladed variable-pitch propeller. The cockpit features a broad canopy and all round vision, with side-by-side seating for pilot and student. The wings are tapered with square tips and the empennage consists of a large fin and rudder with an oblong tailplane with square tips mid-set to the fuselage.

The aircraft is fully aerobatic (to +6G and -3G)

[edit] Grob Tutor

The Tutor is used by British University Air Squadrons to provide Elementary Flying Training (EFT) to university students mainly sponsored by the RAF. The Tutor is also used by Air Experience Flights to provide flying experience to cadets of the Air Training Corps and Combined Cadet Force. The Tutor replaced the Scottish Aviation Bulldog in these roles in the late 1990s. Unusually, the Tutor fleet is owned and maintained by a civilian company called Vosper Thornycroft Aerospace and carries British civilian G-XXXX registrations under a Private Finance Initiative (PFI) scheme. The aircraft are painted overall white with blue flashes and RAF roundels. The G115 costs around £500,000

[edit] Operators

Image:Flag of the United Kingdom.svg United Kingdom

[edit] Specifications (G 115)

General characteristics

  • Crew: Two (student & instructor)
  • Length: 7.59 m (24 ft 9 in)
  • Wingspan: 10.0 m (32 ft 8 in)
  • Height: 2.8 m (9 ft 2 in)
  • Wing area: 12.2 m² (131.3 ft²)
  • Empty weight: 690 kg (1,518 lb)
  • Max takeoff weight: 990 kg (2,183 lb)
  • Powerplant: 1× Lycoming O-360-A1B6 4-cylinder air-cooled piston engine, 149 kW (180 hp)

Performance

  • Maximum speed: 240 km/h (130 knots, 150 mph)
  • Range: 1,150 km (621 nm, 719 mi)
  • Service ceiling 3,050 m (10,000 ft)
  • Rate of climb: 5.33 m/s (1,050 ft/min)
  • Maximum fuel load: 33 gallons (in contrast, this is not enough for some jets to taxi to the end of the runway)

[edit] Incidents

For any elementary training aircraft a large number of minor incidents are expected, reflecting the inexperience of the pilots more than any flaws with the aircraft. Compared to its predecessors the Scottish Aviation Bulldog and the Chipmunk the Tutor has an excellent safety record. The only major incident so far in its RAF service occurred in June 2004, when a Tutor operated by Southampton UAS lost a propellor blade and its canopy in flight. The aircraft was landed unpowered in a field, where damage was also sustained to the undercarriage. Both pilots were uninjured. Subsequent investigation revealed cracking in the propellor blade roots across the fleet, which was grounded for several months as urgent modifications were made.

[edit] External links

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