Sermon Illustrations
Birds Teach the Air Force a Better Way to Fly
Okay, you've probably heard that well-worn illustration about how geese fly in V-formation. Well, here's a new twist about how the U.S. Air Force is starting to learn a thing or two from our geese friends. The Air Force calls it vortex surfing.
An Air Force scientist explained what they're learning from one of God's creatures: "People have been looking at how we can fly like birds since the earliest stages of aviation." So, here's how it works: The wingtips of every plane generate swirling coils of air called vortices. If an airplane is positioned in the right spot, the updraft from the vortex will help keep the airplane aloft. By surfing that vortex, we can transfer the energy that is lost by the lead aircraft and you can recapture some of that energy.
The Air Force consumes approximately 2 billion gallons of aviation fuel annually. Since the Air Mobility Command accounts for 60% of the Air Force's annual fuel bill, the savings from flying its large transports in a more efficient way could be significant. Another 5 to 15% fuel savings have been recorded for a fighter jet flying in the wake of a passenger jet.
So why hasn't anyone thought of doing this before now? The answer is avionics and incentive: The jet instrumentation needed to keep the planes in a safe, tight formation is much better than it used to be. Now, tie that to budget constraints as Congress scrutinizes military spending.
Possible Preaching Angle:
And all that was learned by following Jesus' advice to "consider the birds of the field."
Source:
Scott Neuman, “Birds Teach the Air Force a Better Way to Fly,” NPR (7-19-13); Electric Aviation, “Vortex Surfing for Massive Energy Savings,” YouTube (10-28-22)