Flexo From St. Helena, joined Mar 2007, 405 posts, RR: 0 Posted (5 years 11 months 2 weeks 3 days 20 hours ago) and read 3559 times:
Over in civil aviation and Tech Ops there are a lot of topics about blended wing body airplanes and how that would be the ultimate step in efficiency if ever a company were brave enough to build one for commercial use.
As the B2 is a BWB how does it compare efficiency wise with other large bombers? Does it have a higher payload with lower fuel consumption (or greater range)? Or is all that too classified for anyone to know or post here?
BladeLWS From United States of America, joined Dec 2005, 403 posts, RR: 0
Reply 1, posted (5 years 11 months 2 weeks 3 days 20 hours ago) and read 3549 times:
Most of that is classified, but here are the publicly known figures for the B-52, B-1, and B-2
* Maximum speed: 560 kt (650 mph, 1,000 km/h)
* Combat radius: 4,480 mi (3,890 NM, 7,210 km)
* Ferry range: 11,000 mi (9,560 nm, 15,000 km)
* Service ceiling 50,000 ft (17,000 m)
* Rate of climb: 6,270 ft/min. (31.85 m/s)
* Wing loading: 30 lb/ft² (150 kg/m²)
* Thrust/weight: 0.51
* Lift-to-drag ratio: 21.5 (estimated)
Ordnance: up to 60,000 lb (27,200 kg) bombs, missiles, and mines, in various configurations
* Maximum speed:
o At sea level: Mach 0.92 (700 mph, 1,130 km/h)
o At altitude: Mach 1.25 (950 mph, 1,529 km/h)
* Combat radius: 2,993 nm (3,445 mi, 5,543 km)
* Maximum range: 6,478 nm (7,456 mi, 11,998 km)
* Service ceiling 60,000 ft (18,000 m)
* Wing loading: 167 lb/ft² (816 kg/m²)
* Thrust/weight: 0.37
* Fuel capacity, optional: 10,000 U.S. gal (38,000 L) fuel tank for 1-3 internal weapons bays each
Ordnance: * Six external hardpoints for an additional 59,000 lb (27,000 kg) of ordnance (use for weapons currently restricted by START I treaty)
* Three internal bays for 75,000 lb (34,000 kg) of ordnance.
* Maximum speed: 410 knots (760 km/h, 470 mph)
* Range: 5,600 nm (10,400 km, 6,400 mi)
* Service ceiling 50,000 ft (15,000 m)
* Wing loading: 67.3 lb/ft² (329 kg/m²)
* Thrust/weight: 0.205
Ordnance: 2 internal bays for 50,000 lb (22,700 kg) of ordnance.
Jgarrido From Guam, joined Mar 2007, 338 posts, RR: 0
Reply 2, posted (5 years 11 months 2 weeks 3 days 19 hours ago) and read 3507 times:
It's hard to compare them on their published stats, really. You have a 50 year old bomber with 8 engines, built when jet engines on a long range plane was a new concept. A mach 1+ bomber with 4 engines that produce the same amount of thrust as those on a F-15. And of course a plane designed not to be seen by radar or IR.