Ads
related to: 42 angle mount ceiling fan with remote and light kitExcellent Customer Service & OnÂ-time Shipping - Bizrate
Search results
Results from the WOW.Com Content Network
The annular lift fan concept uses two parallel annular fans counter-rotating about the central fuselage.(see plan view) The two fans are incorporated in an annular duct, separated by a baffle, but coupled by the gears in the baffle to counter-rotate and eliminate torque. During VTOL, the outer fan is driven pneumatically or mechanically by the ...
The B-52H had the same crew and structural changes as the B-52G. The most significant upgrade was the switch to TF33-P-3 turbofan engines, which, despite the initial reliability problems (corrected by 1964 under the Hot Fan program), offered considerably better performance and fuel economy than the J57 turbojets.