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
Status Active in production
Primary users Mexican Air Force
Kenya Air Force
Israeli Air Force
Produced 1999-present
Developed from Grob G 115
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.[3] The Argentine Air Force bought 10 examples, and has received 4 as of July 2014.[4]

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.
 Argentina
Argentine air force 4, 10 on order
 Canada
Royal Canadian Air Force[5]
Allied Wings[6]
 France
French Air Force[5]
 Israel
Israeli Air Force[5]
 Kenya
Kenya Air Force[citation needed]
 Mexico
Mexican Air Force: 25 (+15 option)[7][8]

Specifications (G 120A)[edit]

Data from Jane's All The World's Aircraft 2003–2004[9]

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)[10]
  • 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 [10]

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[10]
  • 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 (n.d.). "The basic training aircraft success story". Retrieved 20 March 2012. 
  2. ^ Grob Aircraft (n.d.). "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. ^ 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. 
  5. ^ a b c "Customers Worldwide". Grob Aircraft, Retrieved 1 September 2012.
  6. ^ Transport Canada listing of aircraft owned by "Allied Wings" (enter Allied Wings in the box titled "Owner Name")
  7. ^ Mexico selects Grob trainer. Inigo Guevara, Washington, DC - IHS Jane's Defence Weekly. 24 July 2014
  8. ^ EXCLUSIVA: La Fuerza Aérea Mexicana compra 25 aeronaves turbohélice Grob G120TP.
  9. ^ Jackson 2003, pp. 166–167.
  10. ^ a b c Grob Aircraft (n.d.). "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]