Aerotec Uirapuru

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A-122 Uirapuru
Uirapuru voa.jpg
T-23A Uirapuru.
Role Primary Trainer
National origin Brazil
Manufacturer Aerotec
First flight 2 June 1965
Produced 1968–1977
Number built 155

The Aerotec A-122 Uirapuru was a Brazilian military trainer aircraft. It was a low-wing monoplane with tricycle undercarriage that accommodated the pilot and instructor side-by-side. It first flew on 2 June 1965.[1]

In October 1967, the Brazilian Air Force ordered 30 aircraft to replace the obsolete Fokker S.11s and S.12s (T-21s and T-22s) that were operating in the Air Force Academy.[2] Later, they ordered another 40, and then 30 more. These were designated T-23.

The Bolivian Air Force ordered 36 examples in 1974, which flew until 1997, and in 1975 the Paraguayan Air Force bought eight aircraft to replace the Fokker T-21 (S.11). In 1986, six more were donated by the FAB. Most of them were withdrawn from service in 1992, replaced by the Enaer T-35 Pillán. As of 2009, only one T-23 is in flying conditions. Thirty others were sold in the civilian market.

A total of 155 were built including prototypes by the time production finished in 1977.[3]

The T-23 suffered fatal accidents during spin training. The problem was solved after a crash in which an instructor described his stricken aircraft's responses to his control inputs all the way to the end. Uirapurus then received a ventral fin under the rear fuselage to correct the issue.

In 1980 interest by the airforce in an improved version led to the development of the Uirapuru II.

Variants[edit]

  • A-122A Uirapuru – T-23 – Military trainer
  • A-122B Uirapuru – Civil version[4]
  • A-122C Uirapuru – T-23C
  • A-132 Uirapuru II – enlarged version with improved canopy and larger vertical tail surfaces.[4]

Operators[edit]

 Brazil
 Bolivia
 Paraguay
  • Paraguayan Air Force – 14 aircraft (8 in 1975 and 6 in 1986)
  • Escuela Nacional de Aeronáutica Civil – 1 aircraft (early 70s)

Specifications (T-23)[edit]

A-122A(Military) A-122C(civil)

Data from Jane's All The World's Aircraft 1971–72 [6]

General characteristics

  • Crew: 2
  • Length: 6.60 m (21 ft 8 in)
  • Wingspan: 8.50 m (27 ft 11 in)
  • Height: 2.70 m (8 ft 10 in)
  • Wing area: 13.50 m2 (145.3 sq ft)
  • Aspect ratio: 5.33:1
  • Airfoil: NACA 43013
  • Empty weight: 540 kg (1,190 lb)
  • Max takeoff weight: 840 kg (1,852 lb)
  • Fuel capacity: 140 L (37 US gal; 31 imp gal)
  • Powerplant: 1 × Lycoming O-320-B2B 4-cylinder horizontally-opposed air-cooled engine, 120 kW (160 hp)
  • Propellers: 2-bladed Sensenich M-76-DM-60 fixed-pitch metal propeller, 1.87 m (6 ft 2 in) diameter

Performance

  • Maximum speed: 225 km/h (140 mph, 121 kn)
  • Cruise speed: 185 km/h (115 mph, 100 kn) at 1,500 m (4,900 ft) (max cruise)
  • Stall speed: 88 km/h (55 mph, 48 kn) (flaps down)
  • Never exceed speed: 337 km/h (209 mph, 182 kn)
  • Range: 800 km (500 mi, 430 nmi)
  • Endurance: 4 hr
  • Service ceiling: 4,500 m (14,800 ft)
  • Rate of climb: 4 m/s (790 ft/min)
  • Takeoff run: 200 m (660 ft)
  • Landing run: 180 m (590 ft)

See also[edit]

Related development

References[edit]

Notes
  1. ^ Pereira 1977, p. 13
  2. ^ Pereira 1977, pp. 13–14
  3. ^ Taylor 1980, p. 10
  4. ^ a b Taylor 1989, p. 39
  5. ^ Siegrist 1987, p. 194
  6. ^ Taylor 1971, p. 10
Bibliography
  • Pereira, Roberto (July 1977). "Songbird of the Amazon". Air International. Vol. 13 no. 1. pp. 13–17.
  • Siegrist, Martin (October 1987). "Bolivian Air Power — 70 Years On". Air International. Vol. 33 no. 4. pp. 170–176, 194. ISSN 0306-5634.
  • Taylor, John W.R. (editor) (1971). Jane's All The World's Aircraft 1971–72. London: Sampson Low. ISBN 0-354-00094-2.CS1 maint: extra text: authors list (link)
  • Taylor, John W R (ed.) (1980). Jane's All The World's Aircraft 1980–81. London: Jane's Publishing. ISBN 0-7106-7105-9.CS1 maint: extra text: authors list (link)
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 39.

External links[edit]

Media related to Aerotec A-122 Uirapuru at Wikimedia Commons