What type of rocket burn is generally less effective due to its low initial thrust?

The type of rocket burn known for its generally lower initial thrust and less effectiveness is the progressive burn. In a progressive burn, the engine starts with a relatively lower thrust and gradually increases over time. This characteristic can lead to inefficiencies during the initial phase of flight, where maximizing thrust is crucial for overcoming gravitational forces and achieving optimal acceleration.

This contrasts with other types of burns that may either maintain a higher thrust throughout their duration or have bursts of thrust, which are more effective for initial launch phases. Being aware of these burn characteristics is essential for understanding rocket performance and ensuring successful launches.