The hummingbird: a question about moving air

Our journey began with a clear goal: propulsion offering greater agility, better use of energy and less noise. Observing God’s creation continually inspired our questions. Blessed is God, the best of creators. The hummingbird gave us a compelling scene to contemplate: a small creature holding its position in the air and changing its movement precisely

Each wingbeat moves air and leaves a wake of motion and vortices. That wake persists for a time, so the next wing movement encounters air with an existing state. “Air memory” is our simple description of that persistence

Studies of hummingbird airflow reveal vortex structures associated with wing motion. A simulation of a ruby-throated hummingbird found that wing–wake interaction can enhance lift during parts of the stroke, while other effects can offset that benefit. Its effect therefore depends on timing, wing trajectory and the state of the air

For us, this opened an engineering question: how can we receive moving air and coordinate our interaction with it? Air reaching a new stage carries direction, momentum and effects created by the preceding movement. Understanding what arrives, and when, becomes the basis for deciding how to interact with it

A skilled table-tennis player offers a useful analogy: the incoming ball already has speed, direction and spin. The player coordinates racket position, timing, angle and added force. This illustrates receiving and redirecting motion; airflow has a distributed, complex behaviour that requires calculation and experiment

From this question grew our Air Reactor vision: stages interacting with the incoming air state and reorganising momentum as it moves through the unit. Electrical energy powers the process, and testing establishes which objectives have been achieved

This is the role of inspiration in the HPS journey. Research describes bird behaviour under the conditions studied; our engineering concept is evaluated through calculation, simulation, prototypes and measurement. We continue that work across development generations, towards the integrated unit now in development