Home
Aircraft
Blog
Contact
Menu
Home
Aircraft
Blog
Contact
Search
Search
Close this search box.
Home
/
Aircraft A-Z
/
B
/
Boulton Paul
/ Boulton Paul Balliol
Boulton Paul Balliol
The Boulton Paul Balliol and Sea Balliol were monoplane advanced trainer aircraft.
On 17 May 1948, it became the world’s first single-engine turboprop aircraft to fly.
The Balliol was operated primarily by both the Royal Air Force (RAF) and the Royal Navy Fleet Air Arm (FAA).
Variants
P.108 Balliol T.Mk 1
Prototypes, three built.
Powered by the Armstrong Siddeley Mamba turboprop engine.
Balliol T.Mk 2
Two-seat advanced training aircraft for the RAF.
Sea Balliol T.Mk 21
Two-seat advanced training aircraft for the FAA.
Specifications
Crew
2
Length
35 ft 1+1⁄2 in (10.71 m)
Wingspan
39 ft 4 in (11.99 m)
Height
12 ft 6 in (3.81 m)
Wing area
250 sq ft (23 m2)
Airfoil
NACA 65
Empty weight
6,730 lb (3,053 kg)
Gross weight
8,410 lb (3,815 kg)
Fuel capacity
125 imp gal (150 US gal; 570 L)
Powerplant
1 × Rolls-Royce Merlin 35 liquid-cooled V12 engine,
1,245 hp (928 kW)
Propellers
4-bladed de Havilland constant speed propeller, 11 ft 3 in (3.43 m) diameter
Performance
Maximum speed
288 mph (463 km/h, 250 kn) at 9,000 ft (2,700 m)
Cruise speed
231 mph (372 km/h, 201 kn) at 5,500 ft (1,700 m) (weak mix)
Stall speed
83 mph (134 km/h, 72 kn)
Endurance
Three hours at 220 mph (190 kn; 350 km/h)
Service ceiling
32,500 ft (9,900 m)
Rate of climb
1,790 ft/min (9.1 m/s)
Time to altitude
Six minutes to 10,000 ft (3,000 m)
Take-off distance to 50 ft (15 m)
1,350 ft (410 m)
Landing distance from 50 ft (15 m)
1,950 ft (590 m)
Armament
Guns
One × 0.303 in (7.7 mm) Browning machine gun in port wing
Rockets
Provision for four × “60-lb” rockets.
Share on facebook