UTVA 75

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UTVA 75
MoD - 40th Anniversary Utva 75.jpg
Serbian Air Force Utva 75
RoleMilitary Trainer Aircraft / Civilian Trainer Aircraft
National originFlag of Serbia.svg  Serbia
Manufacturer UTVA
First flight19 May 1976 [1]
Introduction1978
StatusActive
Primary user Serbia Air Force

The UTVA 75 [2] is a light utility aircraft produced by the Serbian aircraft manufacturer UTVA. It was first introduced in the late 1970s and has since been used primarily for training, reconnaissance, and light transport roles. Known for its reliability and versatility, the UTVA 75 has been adopted by several military and civilian operators around the world.

Contents

Slovenian Utva-75 Utva-75.jpg
Slovenian Utva-75
Utva-75 Serbian air force Utva 75 53244 252stae 204vbr.jpg
Utva-75 Serbian air force
Utva-75 Serbian RViPVO Utva 75 RV i PVO VS-3.jpg
Utva-75 Serbian RViPVO
Montenegrin Air Force Utva 75 Montenegrian air force Utva 75 at golubovci airbase.JPG
Montenegrin Air Force Utva 75
Macedonian Utva-75 LOLAUtva75.jpg
Macedonian Utva-75
Utva Sova - further development of the aircraft Utva Sova - Partner 2019 - 1.jpg
Utva Sova - further development of the aircraft
The sole SAFAT 03, developed from the UTVA 75. SAFAT 03.jpg
The sole SAFAT 03, developed from the UTVA 75.

The development of the UTVA 75 began in the early 1970s in response to a need for a new primary trainer aircraft for the Yugoslav Air Force. The first prototype took to the skies in 1976, and following successful testing, the aircraft entered production in 1978. Over the years, the UTVA 75 has seen various upgrades and modifications to enhance its performance and capabilities.

Designed in 1975 to replace the UTVA Aero 3 as the primary basic trainer in the Yugoslav Air Force. It features upward opening gull-wingtype access doors to the two-seat side-by-side cockpit. Another characteristic is a row of air scoops, presumably for cockpit ventilation, in the central front frame of the cockpit. The Utva 75 made its maiden flight in 1976. Between 1978 and 1985, a total of 136 UTVA 75s were produced for the former Yugoslav Air Force. Following the breakup of Yugoslavia, many were passed on to successor states such as Serbia, Slovenia, Croatia, Montenegro.

Development

The UTVA 75 features a fully metallic, semi-monocoque airframe, which provides structural strength and durability. The aircraft is powered by a Lycoming O-360 engine, capable of delivering 210 horsepower. This engine configuration allows the aircraft to achieve a maximum speed of 209 km/h (113 knots) and a service ceiling of 4,178 meters (13,708 feet).

The low-wing design of the UTVA 75 contributes to its stability and maneuverability, which are essential for training and acrobatic maneuvers. The fixed landing gear ensures reliability and reduces maintenance complexity, making it easier for training operations. The cabin is ergonomically designed, featuring adjustable seats and pedals, and provides ample room for both pilots, enhancing comfort during long training sessions.

Design

The UTVA 75 is designed [3] as a high-wing monoplane, emphasizing simplicity and robustness, ideal for training and light utility roles. Here are some detailed aspects of its design and development:

Airframe and Structure [4]

The UTVA 75 features an all-metal construction, primarily using aluminum alloys, which provides a good balance between strength and weight. The high-wing configuration offers excellent visibility for the pilots, which is particularly beneficial during training flights and reconnaissance missions. The aircraft's fixed tricycle landing gear is designed to be sturdy and reliable, capable of operating from both paved runways and rough airstrips.

Powerplant

The aircraft is powered by a single Lycoming IO-360 engine, a four-cylinder, air-cooled, horizontally opposed piston engine. This engine produces 180 horsepower, providing the UTVA 75 with sufficient power for its various roles. The engine is equipped with a two-blade fixed-pitch propeller, which is simple to maintain and operate.

Cockpit and Avionics

The cockpit of the UTVA 75 is designed for two occupants, typically a student and an instructor in a side-by-side seating arrangement. This setup allows for effective communication and instruction during training flights. The aircraft is equipped with dual flight controls, ensuring that both the student and the instructor can operate the aircraft.

The avionics suite in the UTVA 75 is relatively basic, reflecting its primary role as a training aircraft. However, it includes all necessary instruments for VFR (Visual Flight Rules) flight, such as airspeed indicator, altimeter, vertical speed indicator, and a standard set of engine gauges. Some variants may be equipped with additional avionics for specific roles, such as navigation aids for the reconnaissance variant.

Operational history

Performance and Handling [5]

The UTVA 75 is designed to be a stable and forgiving aircraft, making it an excellent platform for primary flight training. Its high-wing configuration and moderate wing loading provide good low-speed handling characteristics and short takeoff and landing capabilities. The aircraft's control surfaces are large and responsive, contributing to its easy handling and maneuverability.

Modifications and Upgrades

Over the years, the UTVA 75 has seen several modifications and upgrades to enhance its performance and adapt it to different roles. These modifications include reinforced landing gear for rough-field operations, additional fuel tanks for extended range, and various mission-specific equipment such as cameras and crop-dusting apparatus.

Operational Use

The UTVA 75 has proven to be a versatile and reliable aircraft, serving in various roles beyond primary training. It has been used for aerial reconnaissance, light transport, liaison duties, and even agricultural applications. Its simple design and robust construction have made it a favorite among operators who require a dependable and easy-to-maintain aircraft.

Overall, the design of the UTVA 75 reflects its intended purpose as a multi-role utility aircraft. Its combination of simplicity, reliability, and versatility has ensured its continued use by both military and civilian operators around the world.

Variants

UTVA 75A11
Single-seat agricultural aircraft, largely using the Utva 75 airframe. [6]
UTVA-75A21
Two-seater with dual controls and provisions for blind instrument flying. [6]
UTVA-75A41
Four-seater with advanced avionics, first flown in 1986. [6]
SAFAT 03
A development of the UTVA 75 from the SAFAT Aviation Complex at Khartoum, Sudan, with a modified fuselage and tail fin. To confuse matters the Sudanese Government marked up a standard UTVA 75 as a SAFAT 03. One example known, which was displayed at the Dubai Air Show in 2011.

Operators

Flag of Sudan.svg  Sudan

Former operators

Flag of Yugoslavia (1946-1992).svg  Yugoslavia
Flag of Slovenia.svg  Slovenia
Flag of Croatia.svg  Croatia
Flag of Bosnia and Herzegovina.svg  Bosnia and Herzegovina
Flag of Serbia.svg  Serbia
Flag of Montenegro.svg  Montenegro
Flag of North Macedonia.svg  North Macedonia

Specifications (UTVA 75A21)

Data fromJane's All the World's Aircraft 1988-89 [6]

General characteristics

Performance

82 km/h (51 mph; 44 kn) 25° flap at idle

Armament

' Avionics

See also

Aircraft of comparable role, configuration, and era

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References

  1. "Školski avion UTVA-75". Vojska Srbije. Retrieved 10 July 2013.
  2. "UTVA Aircraft Industry". 6 January 2021.
  3. Petrašinović, Danilo (Jul 2013). "Light aircraft UTVA 75". Research Gate.
  4. Aleksandar, Aleksandar (Jul 2013). "Light aircraft UTVA 75". Research Gate.
  5. "Flight Report – That 70s Plane: Flying The UTVA 75 Trainer". April 2018.
  6. 1 2 3 4 John W.R. Taylor, ed. (1988). Jane's All the World's Aircraft 1988-89. London: Jane's Information Group. pp. 499–500. ISBN   0-7106-0867-5.
  7. "Eurofighter: Dubai Air Show 2011". Eurofighter. 17 November 2011. Archived from the original on 15 May 2013. Retrieved 10 July 2013.
  8. "World Air Forces 1997 pg. 621". flightglobal.com. Retrieved 3 May 2019.
  9. "World Air Forces 1997 pg. 71". flightglobal.com. Retrieved 3 May 2019.