Here's the link:

Today, the X-43A, attached to its modified Pegasus rocket booster, took off from Dryden Flight Research Center at Edwards Air Force Base, Calif., tucked under the wing of the B-52B launch aircraft. The booster and X-43A were released from the B-52B at 40,000 feet and the booster's engine ignited, taking the X-43A to its intended altitude and speed. The X-43A then separated from the booster and accelerated on scramjet power to a brief flight at nearly Mach 10.

Pity that the X-43A didn't carry more than 10 seconds worth (about 2 pounds) of hydrogen. I guess they believed 10 seconds of burn time would answer the necessary questions, but a longer burn might've been useful.

If the vehicle did accelerate under scramjet power, then there definitely was a net positive thrust. Even if the velocity remained unchanged, it was still an interesting result. For any aircraft, a constant velocity in level flight means that thrust and drag are equal. This means the thrust was equal to the drag for the entire aircraft, not just the engine. I suggest this means there was net positive thrust for the engine since the thrust had to equal not only drag for the engine but for the rest of the airframe as well. However, it gets complicated when you're talking about scramjets since they are so integral to the airframe design.

All in all, it sounds like a successful test. Now what?