OV-10 Bronco Multimission Aircraft

OV-10 Bronco Multimission Aircraft

Historical Snapshot

The OV-10 Bronco, a rugged, maneuverable, twin-turboprop, multimission aircraft, served with the U.S. Air Force and Marine Corps (OV-10A). The U.S. Navy also used the OV-10. The Navy squadron VAL-4 Black Ponies flew them with much success in the Vietnam War. Internationally, the OV-10 served with the military services of West Germany (OV-10B), Thailand (OV-10C), Venezuela (OV-10E) and Indonesia (OV-10F).

Designed and built by North American Aviation at Columbus, Ohio, the Bronco was faster and more tactically versatile than helicopters, yet slower and more maneuverable than jets, and could use tactics not possible with either.

The OV-10D night observation system (NOS) featured a unique night observation and target marking system that included forward-looking infrared (FLIR) and laser designator/ranger. With uprated 1040 SHP turboprop engines and fiberglass propellers, NOS provided greater range, improved performance and greater survivability.

In military operations, the Bronco’s ability to find and hit battlefield targets close to friendly troops made it effective against conventional and guerrilla forces.

Military applications for which the Bronco was particularly suited include anti-guerrilla operations, helicopter escort, close air support, armed reconnaissance and forward air control. In addition, it could be used for utility missions such as cargo paradrop — delivery of up to six paratroops, medical evacuation, smoke screening and psychological warfare with leaflets and loudspeakers.

For peacetime operations, the guns, bomb racks and armor could be removed quickly, and the aircraft became a high-performance short takeoff and landing utility vehicle. Potential applications included aerial mapping, geological survey, spraying, disaster relief and patrol work. Civil action applications added significantly to the Bronco’s cost-effectiveness.

The Bronco’s fuselage was mounted under the wing and provided tandem seating for pilot and observer. Its canopy design afforded better visibility than that of most helicopters. Each crewman was equipped with an LW-3B ejection-seat system, also designed and built at Columbus, which was capable of zero-speed, zero-altitude ejections.

Armor protection, a bullet-resistant windshield and self-sealing fuel cells were provided for operations in a hostile environment. Twin engines, dual manual flight controls, and rugged and simple construction also contributed to survivability and safety.

The OV-10 was equipped with seven external store stations and four 7.62 mm guns installed in the sponsons. A variety of conventional ordnance could be delivered in addition to 2,000 rounds of ammunition.

The seven external store stations consisted of four sponson store stations, one centerline station and two external wing stations. Sponson accessibility provided rapid loading of stores and ammunition. The wing stations could carry the LAU-7/A launcher for mounting either rocket packages or missiles. The centerline store station could also carry either a 20 mm gun pod or a 150-, 230- or 300-gallon (568-, 871- or 1136-liter) external fuel tank.

Removal of the armament sponsons and the backseat with its associated armor enabled a quick and simple conversion to a civil action configuration, which permitted the carrying of 3,200 pounds (1452 kilograms) of cargo in the aft fuselage.

For operation in remote areas, the Bronco had a specially designed rough field landing gear, required no ground equipment for starting and could be maintained with simple hand tools. In the event of an emergency, the Bronco could use high-octane or automotive fuel in place of jet fuel with only a slight degradation of power.

OV-10 Bronco Multimission Aircraft

Technical Specifications

First flight July 16, 1965
Span 40 feet (12.2 meters)
Length 41 feet 7 inches (12.7 meters)
Height 15 feet 1 inch (4.6 meters)
Weight Empty: 7,190 pounds (3,261 kilograms); maximum take-off gross weight: 14,444 pounds (6,552 kilograms)
Power plant Two Garrett-AiResearch turboprop engines, T76-G-412 and T76-G-413, 715 shaft horsepower each
Maximum speed at sea level 244 knots (452 kilometers/hour)
Range 700 nautical miles (1,297 kilometers) with internal fuel; 1200 nautical miles (2224 kilometers) with 150-gallon (568-liter) drop tank
Service ceiling 28,800 feet (8,778 meters)
Fuel Five self-sealing fuel tanks in wing: 252-gallon capacity (954 liters); 150-, 230- or 300-gallon (568-, 871-, or 1,136-liter) external tank
Crew One pilot and one observer (removable rear seat for greater fuselage cargo capacity)
Armament Centerline station for 20 mm gun pod, or stores; four 7.62 mm M60C machine guns in sponsons; four sponson stations for rockets, miniguns or stores; two wing stations for rockets or missiles
Mission performance 5.5 hours loiter time with 150-gallon (568-liter) drop tank; 50 nautical miles (93 kilometers) and 2 hours loiter time with full ordnance load
Equipment Zero-speed, zero-altitude escape seats; air-to-air and air-to-ground communication systems
Landing gear Trailing arm articulating with two-stage air-oil telescoping shock absorbing struts
Cargo bay 75 cubic feet (2.1 cubic meters) with rear seat; 110 cubic feet (3.1 cubic meters) with rear seat removed