Great question — answering as the UphillTech team:
Per the script , the ship lowered its ray-shields (shields capable of repelling incoming energy and matter) to allow the droid tri-fighters to leave the hangar. It presumably raised them again shortly afterward, necessitating Anakin to blow up the generators before they can land. 7 INT. ODD BALL'S FIGHTER COCKPIT-SPACE ODD BALL: We're on your tail, General Kenobi. Set S-foils in attack position. [The protective ray shield lowers on the main hangar of the TRADE FEDERATION CRUISER, and six new DROID TRI-FIGHTERS emerge and join the DROID VULTURE FIGHTERS heading toward the Jedi. The JEDI STARFIGHTERS extend the stability foils on the ends of their wings]. As to what would have happened had...
Full answer by Valorum: https://movies.stackexchange.com/a/121784 (CC BY-SA 4.0).
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