Definition
A missile that is powered and guided during its initial boost phase, then follows an unpowered, free-falling trajectory shaped by gravity and aerodynamic drag for the remainder of its flight to the target.
Plain English
A rocket-propelled weapon that is steered only at the beginning. After the engines burn out, it coasts the rest of the way and falls toward its target like a thrown stone, following the curved path that gravity gives it.
Context Anchor
Pilots may encounter this term in military, defense, restricted-area, warning-area, or national security discussions that affect where aircraft may safely fly.
Derivation
From the Greek 'ballein,' meaning 'to throw.' The same root gives us 'ballistics,' the study of objects in flight after being thrown or launched. The word captures the key idea: once the engines stop, the missile is essentially a thrown object following the laws of physics.
Why Pilots Care
Ballistic missile activity can create large areas of hazardous airspace. Pilots need to obey any related flight restrictions, warning areas, or route changes.
Analogy
Think of throwing a baseball. You apply force only while the ball is in your hand; after release, the ball follows whatever arc gravity and air resistance give it. A ballistic missile works the same way on a much larger scale.
Intuition Check
Do not read “ballistic” as simply meaning “fast” or “out of control.” Here it means the missile follows a curved path after its powered launch phase.
Example Sentence 1
A ballistic missile follows a predictable arc once its rocket motor stops firing.
Example Sentence 2
Unlike powered cruise missiles, a ballistic missile follows an unpowered arc after its engines shut down.