Grob G 120

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G120TP variant in 2011

The Grob G 120 is a two seated training and aerobatic low-wing aircraft with a carbon composite airframe, built by Grob Aircraft. It is based on the Grob G 115TA training aircraft and is specially designed for military and civil pilots training. It has a tricycle landing gear and a low tailplane.

The first operator of the aircraft was Lufthansa Flight Training.^{[citation needed]}

Design and development

The airframe is made of carbon fibre reinforced plastic and is stressed to +6/-4g. Its minimum service life is just over 15,000 flight hours.^{[citation needed]}

The cockpit provides room for students wearing military equipment and helmets. The plane is equipped with movable seats and rudder pedals and an air conditioning system. A second thrust lever is available.^{[citation needed]}

Variants

G 120A: Piston powered version with a Lycoming AEIO-540-D4D5 six cylinder, four-stroke, air-cooled piston aircraft engine producing 260 hp (194 kW).^[1]

G 120TP: Turboprop powered version with a Rolls Royce 250-B17F aircraft engine producing 456 shp (340 kW) for take-off.^[2] The Indonesian Air Force signed a contract for about 18 G 120TP trainers in the elementary and basic flying training roles in September 2011 at a cost of approx US$4 million each. The Argentinian AF also bought 10 examples of the G120TP one of which landed gear-up after just 20 hours of flying. The Indian AF recently bought the PC7M Mk2 in preference to the G120TP as it includes local manufacture.^[3]

Operators

One of six G 120A of the Kenya Air Force

Grob G-120A badge worn by a Canadian Forces military student pilot from 3 CFFTS.

Canada: Royal Canadian Air Force^[4]
Germany: German Air Force^[5]
France: French Air Force^[4]
Israel: Israeli Air Force^[4]
Kenya: Kenya Air Force:^[6] 6 (+6 option)

Specifications (G 120A)

Data from Jane's All The World's Aircraft 2003–2004^[7]

General characteristics

Crew: Two
Length: 8.605 m (28 ft 3 in)
Wingspan: 10.19 m (33 ft 5 in)
Height: 2.57 m (8 ft 5 in)
Wing area: 13.29 m² (143.1 sq ft)
Airfoil: Eppler E884
Empty weight: 960 kg (2,116 lb)
Gross weight: 1,440 kg (3,175 lb)
Max takeoff weight: 1,490 kg (3,285 lb) (Utility)^[8]
Fuel capacity: 256 litres (56 imp gal; 68 US gal)
Powerplant: 1 × Lycoming AEIO-540-D4D5 air-cooled flat-six, 190 kW (260 hp)
Propellers: 3-bladed Hartzell HC-C3YR-1RF/F7663R, 1.98 m (6 ft 6 in) diameter ^[8]

Performance

Maximum speed: 319 km/h; 198 mph (172 kn)
Cruise speed: 307 km/h; 191 mph (166 kn) at 75% power (5,000 ft (1,500 m))
Stall speed: 102 km/h; 63 mph (55 kn) with full flaps
Never exceed speed: 435 km/h; 270 mph (235 kn)
Range: 1,537 km; 955 mi (830 nmi) at 8,000 ft (2,400 m) and 45% power)
Endurance: 6.35 hours at 10,000 ft and maximum endurance power setting^[8]
Service ceiling: 5,486 m (18,000 ft)
g limits: +6/-4G
Rate of climb: 6.5 m/s (1,280 ft/min)

Avionics

Garmin avionics

References

↑ Grob Aircraft (undated). "The basic training aircraft success story". Retrieved 20 March 2012. Check date values in: |date= (help)
↑ Grob Aircraft (undated). "G 120 TP – The intelligent training solution of the 21st century". Retrieved 20 March 2012. Check date values in: |date= (help)
↑ "Indonesian win launches Grob's G120TP". FlightGlobal. 2011-09-19. Retrieved 2012-04-01.
↑ 4.0 4.1 4.2 "Customers Worldwide". Grob Aircraft, Retrieved 1 September 2012.
↑ Grob G120A Basic Trainer Aircraft, Germany,
↑ Augsburger Allgemeine (German regional daily)
↑ Jackson 2003, pp. 166–167.
↑ 8.0 8.1 8.2 Grob Aircraft (undated). "Grob 120A Technical Specifications". Retrieved 20 March 2012. Check date values in: |date= (help)

Grob G 115,120 and 140 Information brochure and Technical Datasheet (Grob Aerospace Sales Department, 2004)
Jackson, Paul. Jane's All The World's Aircraft 2003–2004. Coulsdon, UK: Jane's Information Group, 2003. ISBN 0-7106-2537-5.

External links

Wikimedia Commons has media related to Grob G120.

v t e Aircraft produced by Grob Aircraft

G 102 G 103/G 103a G 104 G 109 G 115 G 116 G 118 G 120/TP G 140 G 180 GF 200 G 850 In partnership: Egrett

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