[Rodamala]

Jack Northrop's Flying Wing, predecessor to the B-2 Spirit.

Which was preceeded by the Horten Bros. flying wings.

[PLMerite]

The Horten brothers actually studied Jack Northrop's early designs.

Northrop-Grumman sponsored the construction of a full-sized(?) Ho229 replica back in 2008 to test its stealth properties

The National Air & Space Museum has moved its 229 into the restoration hall to start work. Finally.

[schurmann]

“Jack Northrop’s Flying Wing, predecessor to the B-2 Spirit.
Which was preceeded by the Horten Bros. flying wings.”

Not so. Northrop’s N-1 and N-9 flying wings were built and flown 1939-42; Horten did make tailless gliders in the early 1930s, but their Ho229 bomber did not fly until late 1944.

Northrop’s N-1 and N-9 were used to prove the concept, and contribute to the development of the B-35 (propeller) and B-49 (jet), which were proposed as very long range bombers. Controllability problems and unforeseen engineering difficulties caused USAF to terminate both bomber programs.

Not until the late 1970s did work start on what became the B-2.