Grob G 120

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Grob G 120
Grob G 120A Take Off.jpg
Lufthansa Grob G 120A at the Lufthansa Airline Training Center Arizona
Role Trainer
National origin Germany
Manufacturer Grob Aircraft
First flight 1999
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.

Design and development[edit]

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[edit]

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[edit]

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[citation needed]
 France
French Air Force[4]
 Israel
Israeli Air Force[4]
 Kenya
Kenya Air Force:[5] 6 (+6 option)

 Argentina

Argentine Air Force:[6] 10

Specifications (G 120A)[edit]

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

See also[edit]

Aircraft of comparable role, configuration and era

References[edit]

  1. ^ Grob Aircraft (undated). "The basic training aircraft success story". Retrieved 20 March 2012. 
  2. ^ Grob Aircraft (undated). "G 120 TP – The intelligent training solution of the 21st century". Retrieved 20 March 2012. 
  3. ^ "Indonesian win launches Grob's G120TP". FlightGlobal. 2011-09-19. Retrieved 2012-04-01. 
  4. ^ a b c "Customers Worldwide". Grob Aircraft, Retrieved 1 September 2012.
  5. ^ Augsburger Allgemeine (German regional daily)
  6. ^ Diego Gonzalez, Buenos Aires - IHS Jane's Defence Weekly (2013-07-08). "Argentina receives new training aircraft, announces Pampa III - IHS Jane's 360". Janes.com. Retrieved 2014-03-19. 
  7. ^ Jackson 2003, pp. 166–167.
  8. ^ a b c Grob Aircraft (undated). "Grob 120A Technical Specifications". Retrieved 20 March 2012. 
  • 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[edit]