Comment Re:271 meters (Score 2) 40
except for the Shuttle, no one has performed a controlled (or powered) landing
I'm not sure how you define "controlled" and "powered" in this context. Once in the atmosphere, the Shuttle was a glider (and a rather poor one at that!) - there was no thrust being applied by its engines. It was an unpowered landing. If you didn't have your landing lined up just right, you could not abort, circle around, and try again like for an airplane.
As for controlled: capsules like Dragon (and Soyuz, and Apollo, etc.) are designed to be passively stable - they'll naturally orient blunt-end-first. But they usually aren't re-entered in that passive configuration. If you do, you end up on a "ballistic" trajectory that comes down relatively steeply: hot, high-G loads. You'll probably survive, but you won't enjoy the ride, the capsule may never fly again, and you'll be 10-100s of km from your intended landing location. Instead, capsules (and the Shuttle) use active control with their thrusters, and weight distribution, to modify their angle of attack, riding high in the thin upper atmosphere as long as they can, bleeding off velocity, and end up with a gentler re-entry profile as a result. They also use this control to bring their landing point as close to target as they can.