Why put a launchpad above the street?
For a delivery drone, a rooftop is more than a convenient perch. It can serve as a compact handoff point between ground-based order handling and the air route, with less exposure to cars, pedestrians, and curbside activity than a street-level site. Keeping launches and returns in one controlled spot also makes the drone’s last stretch of each trip more predictable: it has a known place to begin and finish.
That arrangement shifts some of the work of delivery into the air. A customer does not need a landing area, and the drone does not have to touch down at every destination—an important difference when yards are small, uneven, or crowded.
The package comes down; the aircraft stays up
At the destination, a tether lets the drone lower its load while remaining airborne. The line connects the package to the aircraft, allowing the delivery to reach the ground without the drone’s body or propellers approaching the drop-off surface. After the package is released, the drone can retract the tether and continue its route.
This is a practical compromise. Landing at each address would require a suitable patch of ground and a takeoff afterward. Lowering the package avoids that requirement, but it makes delivery depend on a controlled descent and release rather than a simple touchdown.
A small pad shapes the whole route
The rooftop pad and tether solve different parts of the same logistics problem: the pad organizes where flights start and end, while the tether makes the final handoff possible without a landing spot. Together, they let a delivery network use buildings as launch points and homes or businesses as drop-off points—without asking every destination to become an airfield.
