noun which may take the genitive case particle 'no'
trajectory-shifting; variable trajectory
Technical term used in military and aerospace contexts for missiles or projectiles that can change course mid-flight.
変則軌道ミサイルは迎撃が難しい。
Trajectory-shifting missiles are difficult to intercept.
Compound of 変則 (irregular, anomalous) and 軌道 (orbit, trajectory). The exact historical derivation is uncertain; the term appears in modern technical contexts.