Northrop YB-35 / YB-49 / B-2 Flying Wings PDF eBook + Aircraft Flight Manuals

Northrop YB-35

General Characteristics

• Crew: 9: pilot, copilot, bombardier, navigator, engineer, radio operator, three gunners
• Length: 53 ft 1 in (16.2 m)
• Wingspan: 172 ft (52.2 m)
• Height: 20 ft 3 in (6.2 m)
• Wing area: 4,000 ft² (371.6 m²)
• Aspect ratio: 7.4
• Fuselage diameter: 9 ft 6 in (2.9 m)
• Empty weight: 89,300 lb (40,590 kg)
• Loaded weight: 180,000 lb (81,647 kg)
• Max. takeoff weight: 209,000 lb (94,802 kg)
• Powerplant: 2 × Pratt & Whitney R-4360-17 and 2× R-4360-21 radial engines, 3,000 hp (2,237 kW) each

Performance

• Maximum speed: 393 mph (632 km/h)
• Range: 8,150 mi (13,100 km)
• Service ceiling: 39,700 ft (12,100 m)
• Rate of climb: 625 ft/min (3.2 m/s)
• Wing loading: 45 lb/ft² (220 kg/m²)
• Power/mass: 0.07 hp/lb (0.11 kW/kg)

Armament

• Guns: 20 × .50 in (12.7 mm) M3 Browning machine guns
• Bombs: 51,070 lb (23,210 kg)

Northrop YB-49

General Characteristics

• Crew: 6
• Length: 53 ft 1 in (16.18 m)
• Wingspan: 172 ft 0 in (52.43 m)
• Height: 15 ft 2 in (4.6 m)
• Wing area: 4,000 ft² (371.6 m²)
• Airfoil: NACA 65-019 root, NACA 65-018 tip
• Empty weight: 88,442 lb (40,116 kg)
• Loaded weight: 133,569 lb (60,585 kg)
• Max. takeoff weight: 193,938 lb (87,969 kg)
• Aspect ratio: 7.2
• Powerplant: 8 (6 J35-A-19 on the YRB-49A) × Allison J35-A-15 turbojets, 4,000 (5,000 for J35-A-19) lbf (17 kN) each

Performance

• Maximum speed: 493 mph (793 km/h)
• Cruise speed: 365 mph (587 km/h)
• Range: 9,978 mi (16,057 km) maximum^[19]
• Combat radius: 1,615 mi (1,403 nmi, 2,599 km) with 10,000 lb bombload
• Service ceiling: 45,700 ft (13,900 m)
• Rate of climb: 3,785 ft/min (19.2 m/s)
• Wing loading: 33 lb/ft² (163 kg/m²)
• Thrust/weight: 0.23

Armament

• Guns: 4 × .50 in (12.7 mm) machine guns (to be mounted in rotating “stinger” tail cone on all production aircraft)
• Bombs: 16,000 lb (7,260 kg) of ordnance

Northrop-Grumman B-2A Block 30 Spirit

General Characteristics

• Crew: 2: pilot (left seat) and mission commander (right seat)
• Length: 69 ft (21.0 m)
• Wingspan: 172 ft (52.4 m)
• Height: 17 ft (5.18 m)
• Wing area: 5,140 ft² (478 m²)
• Empty weight: 158,000 lb (71,700 kg)
• Loaded weight: 336,500 lb (152,200 kg)
• Max. takeoff weight: 376,000 lb (170,600 kg)
• Fuel Capacity: 167,000 pounds (75,750 kg)
• Powerplant: 4 × General Electric F118-GE-100 non-afterburning turbofans, 17,300 lbf (77 kN) each

Performance

• Maximum speed: Mach 0.95 (550 knots, 630 mph, 1,010 km/h) at 40,000 ft altitude / Mach 0.95 at sea level
• Cruise speed: Mach 0.85 (487 knots, 560 mph, 900 km/h) at 40,000 ft altitude
• Range: 6,000 nmi (11,100 km (6,900 mi))
• Service ceiling: 50,000 ft (15,200 m)
• Wing loading: 67.3 lb/ft² (329 kg/m²)
• Thrust/weight: 0.205

Armament

• 2 internal bays for ordnance and payload with an official limit of 40,000 lb (18,000 kg); maximum estimated limit is 50,000 lb (23,000 kg).
  • 80× 500 lb class bombs (Mk-82, GBU-38) mounted on Bomb Rack Assembly (BRA)
  • 36× 750 lb CBU class bombs on BRA
  • 16× 2,000 lb class bombs (Mk-84, GBU-31) mounted on Rotary Launcher Assembly (RLA)
  • 16× B61 or B83 nuclear bombs on RLA (strategic mission)
  • Standoff weapon: AGM-154 Joint Standoff Weapon (JSOW) and AGM-158 Joint Air-to-Surface Standoff Missile (JASSM).

B-2 Aircraft Status

 

Northrop N-1M

General Characteristics

• Crew: one
• Length: 17 ft 11 in (5.46 m)
• Wingspan: 38 ft 8 in (11.79 m)
• Height: 4 ft 11 in (1.50 m)
• Wing area: 350 sq ft (33 m²) (approx)
• Gross weight: 3,900 lb (1,769 kg)
• Powerplant: 2 × Lycoming O-145 four-cylinder horizontally opposed air-cooled piston engines, 65 hp (48 kW) each (original engines)
• Powerplant: 2 × Franklin 6AC-264F2 six-cylinder air-cooled horizontally opposed piston engines, 117 hp (87 kW) each (after reengining)

Performance

• Maximum speed: 200 mph (322 km/h; 174 kn)
• Range: 300 mi (261 nmi; 483 km)
• Service ceiling: 4,000 ft (1,200 m)

Northrop N-9M

General Characteristics

• Crew: 1
• Capacity: 1 observer (N9MB)
• Length: 17 ft 9 in (5.4 m)
• Wingspan: 60 ft 0 in (18.3 m)
• Height: 6 ft 7 in (2 m)
• Wing area: 490 sq ft (45.5 m²)
• Airfoil: NACA 65-019
• Empty weight: 5,893 lb (2,673 kg)
• Gross weight: 13,946 lb (6,326 kg)
• Powerplant: 2 × Menasco C6S-4 “Buccaneer” 6-cyl. supercharged inverted air-cooled in-line piston engine, 275 hp (205 kW) each (N-9MB) 2x Franklin XO-540-7, 300 hp (224 kW) each

Performance

• Maximum speed: 258 mph (415 km/h; 224 kn)
• Range: 500 mi (434 nmi; 805 km)
• Service ceiling: 21,500 ft (6,600 m)

Northrop XP-56 Black Bullet

General Characteristics

• Crew: one, pilot
• Length: 27 ft 6 in (8.38 m)
• Wingspan: 42 ft 6 in (12.96 m)
• Height: 11 ft 0 in (3.35 m)
• Wing area: 306 ft² (28.44 m²)
• Empty weight: 8,700 lb (3,955 kg)
• Loaded weight: 11,350 lb (5,159 kg)
• Max. takeoff weight: 12,145 lb (5,520 kg)
• Powerplant: 1 × Pratt & Whitney R-2800-29 radial, 2,000 hp (1,492 kW)

Performance

• Maximum speed: 465 mph at 25,000 ft (749 km/h)
• Range: 660 miles (1,063 km)
• Service ceiling: 33,000 ft (10,061 m)
• Rate of climb: 3,125 ft/min at 15,000 ft (953 m/min)
• Wing loading: 37 lb/ft² (181 kg/m²)
• Power/mass: 0.18 hp/lb (0.96 kW/kg)

Armament

• 2 × 20 mm (.79 in) cannons
• 4 × .50 in (12.7 mm) machine guns

Northrop XP-79B

General Characteristics

• Crew: 1
• Length: 13.98 ft (4.26 m)
• Wingspan: 37.99 ft (11.58 m)
• Height: 7.58 ft (2.31 m)
• Wing area: 278 sq ft (25.8 m²)
• Aspect ratio: 5.19
• Airfoil: NACA 66,2-018
• Empty weight: 5,842 lb (2,650 kg)
• Gross weight: 8,669 lb (3,932 kg)
• Fuel capacity: 300 US gal (250 imp gal; 1,100 l)
• Powerplant: 2 × Westinghouse 19B axial flow turbojet, 1,150 lbf (5.1 kN) thrust each

Performance

• Maximum speed: 547 mph (880 km/h; 475 kn)
• Cruise speed: 480 mph (772 km/h; 417 kn)
• Range: 993 mi (863 nmi; 1,598 km)
• Endurance: 2.45 hours
• Service ceiling: 40,000 ft (12,000 m)
• Rate of climb: 4,000 ft/min (20 m/s)
• Wing loading: 31 lb/sq ft (150 kg/m²)
• Thrust/weight: 0.27 lbf/lb (0.0026 kN/kg)

Armament

• Guns: 4x 0.5 in (12.70 mm) machine-guns

Variants

• NS-12 – Northrop company designation for the MX-324 programme.
• NS-14 – Northrop designation for the XP-79 programme.
• MX-324 – The “secret” designation for the powered version of the MX-334 glider. Only used for the no.2 glider, when powered by a single 200 lbf (890 N) Aerojet XCAL-200 liquid-fuelled rocket engine.
• MX-334 – The designation used to describe the pure glider version ( including the no.2 aircraft before it was fitted with the rocket engine).
• MX-365 – The USAAC project number for the XP-79 programme
• XP-79 – The initial design for a rocket powered fighter, to have been powered by 2 x 2,000 lbf (8,900 N) Aerojet XCAL-2000 liquid-fuelled rocket engine.
• XP-79B – Three aircraft were ordered but only one was completed, crashing on its first flight on 12 September 1945.