Aero Boero AB-115
|Role||Light training aircraft|
|First flight||March 1969|
|Primary user||flying clubs|
|Produced||July 1969 – January 1973 (AB-115)
February 1973–1975 (AB-115BS)
|Number built||45+ (AB-115)
|Developed from||Aero Boero AB-95|
The Aero Boero AB-115 is an Argentine civil utility aircraft. It was developed from the AB-95-115, a refined AB-95 with a more powerful engine and improved aerodynamics. Specific differences included wheel spats, a redesigned engine cowling molded of fiberglass, and aluminum ailerons and flaps.
Production of the AB-115 ended in January 1973. The following month a modified version, the -115BS, was flown. It featured greater wingspan, swept empennage members, and greater fuel capacity.
The AB-115 is a high-wing monoplane, with strut-braced rectangular wings (NACA 23012 profile). The wing, the fuselage and empennage members are made of fabric-covered welded steel tubes. It is a development of Aero Boero's earlier AB-95.
The trainer version, the most common variant, contains two seats in tandem configuration, with the pilot-flying/student pilot in the front seat, and the instructor/pilot-not-flying seating in the rear. Behind the rear seat there is a cargo hold, with capacity of up to 25 kg (55 lb). The front seat has a three-point seatbelt, while the rear one has a simple, abdominal belt. Both occupants enter and exit the aircraft through one single, large door in the right side of the cockpit.
The flight commands are duplicated, with the front seat's center stick, throttle lever, rudder pedals and brake pedals mechanically connected to the rear seat's. The rear stick and the throttle lever can be disassembled when carrying passenger(s).
The primary flight commands are actuated by cables and pulleys. The ailerons and flaps are made of aluminum alloy, while the rudder and elevators are made of steel tubes and fabric. The flaps have four positions (neutral, 15°, 30° and 45°), and are actuated manually, by a lever in the upper left part of the cockpit. The pitch trim tab is located in the trailing edge of the left elevator, and is actuated by a handle in the left side of the cockpit. The rudder and the left aileron also have ground-adjustable trim tabs.
A Lycoming O-235-C2A air-cooled engine, rated at 115 hp (85.8 kW), drives a Sensenich Propeller model 72 CK-050, metallic fixed-pitch twin-bladed propeller. The fuel system uses a FACET MA 3PA carburetor, equipped with carburetor heat. Electrical power is supplied by a Prestolite alternator. The ignition system is driven by dual Bendix Scintilla S5LN magnetos; the starter motor is also by Prestolite. The engine incorporates a wet crankcase, and the lubricant is cooled by an oil radiator in the front of the engine's air intake, which is triggered by a bi-metallic thermostatic valve.
The maximum fuel capacity is 115 liters, with 110 liters usable. The engine can use gasoline of 80/87 to 100/130 octane. Each wing contains an aluminum fuel tank in the root. Fuel quantity is indicated by sight glasses in the wing roots. There are two separate fuel selectors, for each tank, which can be independently opened and closed.
The aircraft uses a conventional undercarriage. Each main gear is fixed to the fuselage at three points – two articulated joints, plus one shock absorber. The wheels are made of aluminum alloy and magnesium, and are equipped with independent hydraulic-actuated brakes. There is no parking brake; when parked, it must be secured by chocks. The tailwheel is connected to the rudder by bungee springs, and itcan also rotate freely when "unlocked".
The instrument panel is, since the AB-115 is mostly used for basic flight training. The flight instruments are an airspeed indicator, altimeter, VSI a turn coordinator, and a magnetic compass. The engine instruments are a tachometer, oil pressure and oil temperature indicators, and an ammeter. The panel includes one Bendix/King VHF radio and one Bendix/King transponder. The cabin instruments are flood-lit; the light operates when the running lights are on. The right wing has two landing lights, which have a five-minute continuous operating limit.
- Aero Boero AB-115BS
- Civil utility/Ambulance version.
- Aero Boero AB-115 Trainer
- Trainer version.
- Aero Boero AB-115/150
- Version with more powerful 150 hp Lycoming O-320 engine. Can be used for crop spraying.
- Crew: 1
- Capacity: 2 passengers
- Length: 7.27 m (23 ft 10¼ in)
- Wingspan: 10.72 m (35 ft 2 in)
- Height: 2.10 m (6 ft 10½ in)
- Wing area: 16.5 m² (177 ft²)
- Airfoil: NACA 23012
- Aspect ratio: 6.96
- Empty weight: 530 kg (1,168 lb)
- Useful load: 240 kg (529 lb)
- Max. takeoff weight: 770 kg (1,697 lb)
- Powerplant: 1 × Textron Lycoming O-235-C2A four-cylinder, air-cooled, horizontally opposed, 85.8 kW (115 hp) at 2400 RPM
- Maximum speed: 220 km/h (119 knots, 137 mph) at sea level
- Cruise speed: 145 km/h (75 knots, 90 mph) (normal cruise)
- Stall speed: 68 km/h (36 knots, 42 mph) (with full flaps – 45°)
- Range: 648 km (349 NM, 400 SM)
- Service ceiling: 2440 m (8000 ft)
- Rate of climb: 2.44 m/s (480 ft/min) (at 70 mph)
- Wing loading: 46.7 kg/m² (9.59 lb/ft²)
- Power/mass: 112 W/kg (0.068 hp/lb)
- Related development
- Mondey, David Encyclopedia of The World's Commercial and Private Aircraft, p. 9 New York; Crescent Books (1981)
- M J H Taylor 1988, p.390.
- J W R Taylor 1976, p.1
- Uberlandia Aeroclub's AB-115 Technical Manual
- Taylor, John W. R. (editor). Jane's All the World's Aircraft 1976–77. London:Macdonald and Jane's, 1976. ISBN 0-354-00538-3.
- Taylor, Michael J.H. (editor). Brassey's World Aircraft & Systems Directory 1999/2000 Edition. London:Brasseys, 1999. ISBN 1-85753-245-7.
- Uberlandia Aeroclub's Flying course, Chapter III – Aero Boero AB-115 aircraft technical manual, 2010 edition.
|Wikimedia Commons has media related to Aero Boero AB-115.|
- The Aero Boero AB-95/115/150/180 Airliners.net.