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Launch monitor glossary / Launch, spin, and trajectory
Descent Angle in a Driver Fitting
Descent angle shows how steeply the ball lands. The engine uses it with launch, spin, and peak height to understand rollout and flight control.
What is Descent Angle?
The landing steepness of the ball flight, used to predict rollout, stopping power, and whether approach shots can hold greens. For a fitting, the important part is how this number connects to the rest of the shot pattern, not whether it looks good by itself.
| Field | Meaning |
|---|---|
| Technical definition | Descent Angle is the angle at which the ball lands relative to the horizon, usually evaluated at the same elevation as launch. |
| Common launch monitor labels | FlightScope: Vertical Descent Angle; TrackMan: Landing Angle |
| Typical unit | degrees |
| Role in Smart Golf Fitting | Optional flight-window signal |
How does Smart Golf Fitting use Descent Angle?
Descent angle is optional. It helps confirm whether a driver flight is flat and running, high and steep, or broadly playable, and it can strengthen or soften head-family direction when paired with launch and spin.
- Confirms whether a low-launch flight is also landing too flat.
- Confirms whether a high-spin flight is landing steeply.
- Adds rollout context beside carry and total distance.
- Helps avoid recommendations that look long only because the simulator predicts a lot of roll.
Which related launch monitor metrics should be checked with Descent Angle?
Descent Angle becomes useful when it is read beside the numbers that explain its cause or its outcome. These relationships are what stop a fitting from chasing one attractive number while making the full shot pattern worse.
| Related metric | How the relationship works |
|---|---|
| Peak Height | Peak height usually influences descent angle. A ball that climbs higher often lands steeper, while a flatter peak tends to produce more rollout. |
| Spin Rate | Spin and descent angle both affect how the ball lands and rolls. The engine reads them together before trusting total distance. |
| Launch Angle | Launch angle helps set the flight going up; descent angle shows how it comes down. Together they show whether the flight is too flat, too steep, or playable. |
| Carry Distance | Descent angle shows how the carried shot lands. With driver, it helps explain rollout; with approach clubs, it would matter even more for stopping power. |
| Total Distance | Descent angle affects rollout. A shallow landing can inflate total distance, so the engine checks carry and direction before trusting the extra roll. |
| Ball Speed | Ball speed changes what descent angle is playable. Faster ball speed can hold a stronger flight, while slower speed often needs more height to land usefully. |
What can be misleading about Descent Angle?
Descent angle is not the whole stopping-power story. Spin rate, landing speed, green firmness, and slope also affect whether the ball stops.
What does the engine do when Descent Angle looks unusual?
A shallow descent can add rollout, but that does not always mean the fit is better. The engine checks carry, spin, and direction before trusting the extra total distance.
First check
Check peak height and spin rate, then evaluate whether the player needs more loft, a different head category, or a hybrid/fairway replacement.
Fitting principle
The engine looks for agreement across the full shot pattern before changing the recommendation. If the related metrics do not support the same story, the report stays more conservative.
Where does Descent Angle fit in the wider methodology?
Use these pages to connect this launch-monitor-glossary definition to the fitting process, methodology, and practical report interpretation.