For anyone who has not yet hit delete. Northrup,s YB-49 had a max gross
weight of
215,500 pounds. Takeoff was at 115 MPH. Landing with the full flaps is at 115
to 125 MPH. Wingspan was 172 feet. (from the pilots handbook).

 Average speed over a  2,258 mile flight was 511.2 MPH. The last wing built
had a top speed of 550 MPH. Not bad for Febuary of 1949.

Lynn E. Hanover

Page 170 Northrop Flying Wings:
"In early February 1949 the YB-49 made a flight from Muroc to Andrews AFB
Near Washington DC in 4 hours and 15 minutes." 

Page 172: "As good as the YB-49's time to the east coast of the US it was second 
best. The day before Major Russ Schlereh flew an XB-47 from Moses Lake Washington 
to Andrews (about the same distance as the YB 49 flew) in 3 hours and 46 minutes."   

Paul Lamar
 
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