Light attack / trainer aircraft
Maximum Payload Weight
Calidus B-250 is a next-generation light attack / trainer aircraft developed by Calidus in collaboration with Brazilian firm Novaer, Rockwell Collins and Pratt & Whitney Canada. It is specifically designed to serve the light combat and training requirements of air forces across the globe.
Calidus unveiled the B-250 aircraft at the Dubai Airshow in November 2017.
The military trainer can support counterinsurgency (COIN) attack missions, reconnaissance, and search-and-rescue (SAR) operations. It can further simulate close air support (CAS), and intelligence, surveillance and reconnaissance (ISR) mission environments during combat training activities.
Calidus B-250 development
The B-250 programme was launched in 2015 and its first prototype was developed within a period of 25 months, completing its maiden flight in July 2017. Calidus plans to construct a manufacturing facility in Al Ain City to facilitate the full-scale production of the B-250 aircraft.
The chief designer for the project was Joseph Kovacs, who was also a part of the design team of Embraer Tucano light attack aircraft.
B-250 military trainer design and features
The aircraft features an all-carbon fibre airframe designed by Novaer. The compact airframe reduces aircraft weight and enhances manoeuvrability while extending service life.
Low-wing configuration of the aircraft enables it to generate more lift and significantly reduce the drag. Safety of the on-board crew is ensured by the optional ballistic protection system.
The under-fuselage integrates a retractable tri-cycle type landing gear with three single wheel units. The reinforced landing gear enables operations from rough airfields and unprepared strips. The aircraft can be mounted with a Wescam MX-15 optronics turret, and seven hard points to carry a range of weapon systems.
The B-250 aircraft 10.88m-long and 3.79m-tall with a wingspan of 12.1m and a distance of 3.1m between the wheels.
Cockpit and avionics of Calidus B-250
The state-of-art, open-architecture cockpit houses two crew members in tandem configuration. It is fitted with two zero-zero ejection seats developed by Martin Baker. The fully pressurised and air-conditioned cockpit integrates an on-board oxygen generating system (OBOGS) to support long-range missions.
The B-250 military trainer aircraft is equipped with an advanced Rockwell Collins Proline Fusion avionics suite, including large multi-functional display screens, touchscreen technology, a digital head-up display (HUD), and intuitive icons.
The avionics suite gathers information from on-board sensors and offers real-time information about runways, taxiways, complex intersections, and aircraft location. The information will also enhance the situational awareness of the pilots.
It also integrates a fully automatic Multiscan weather radar, which provides information on the weather conditions to the on-board crew.
Engine and performance
B-250 is powered by a Pratt and Whitney PT6A-68 turboprop engine equipped with a multi-stage axial and single-stage centrifugal compressor. Coupled to a single four-bladed propeller, the engine has maximum power production capacity of 1,600shp.
The power-plant allows the aircraft to fly at a maximum speed of 301k. The aircraft can attain a maximum altitude of 30,000ft (9,000m) within a short span of time. It is designed to carry a maximum payload of 1,796kg and travel up to a maximum range of 4,500km.
The maximum autonomy or the endurance offered by the aircraft is 12 hours.
The Global Military Aircraft Market 2011-2021
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