Lesath.
On a flying wing, If you use the ailerons as flaps what are you actually doing? Remember the elevator? For all intent and purpose flying wings whether models or the real thing such as the YB-49 do not have flaps as is evident on fixed wing aircraft such as a 747, Piper, P-51 Mustang, Cessna. Following me so far? OK! Here's what flying wings like the YB-49, The stealth Bomber or YF-117 do have. It's called Crow. Or at least a version of it. Crow is when the flaps go down, in this case the elevators, and the ailerons go up. So they have Elevons and, Spoilerons. This is accomplished in two ways. One way is to have a top and bottom to each control surface that work together and independently. The top half can go up while the bottom half goes down to act as spoilers. If you take your hands and put them palms together now spread your fingers open while keeping the heel of your palms together. This is the effect you have. A V shape acting as both spoilerons and flaperons. Sort to speak. The open part of the v is the TE or trailing edge. This is one version of Crow. Another is when on conventional airplanes the ailerons go up while the flaps go down. This is mostly used on sailplanes to help in deceleration for landing and decent. Can also be used on high speed aircraft but very limited due to high stress. Extreme air braking.
Next time you watch an airliner land watch the ailerons you will see they will at some point, usually once the main gear has settled, will open up into a V shape. This is a version of Crow. They act as spoilers or airbrakes. If I confused you more I appologize. To make a long story short Flying wings have no flaps. They have spoilerons and elevons. Used as airbrakes.
I have to make up a word here Flaperator. Where the elevator can be used as a flap.

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