A. Qualifier Round
- Qualifier Round Objective: Select the top 30 teams that demonstrate a lightweight aircraft capable of safe, controlled flight while carrying the prescribed 1,000 mL water payload.
- Flight Duration: The aircraft must fly safely for at least 30 seconds with the full 1,000 mL payload. Water release is not required in this round.
- Payload Rules: The water must be housed in a sealed, securely mounted, and removable interior reservoir. The reservoir and release mechanism count toward the aircraft’s empty weight.
- Pre-Flight & Timing: Judges will inspect the reservoir, mounting, and release mechanism before takeoff. The reservoir exterior must be dry with zero visible leakage. The total flight window from takeoff to landing is strictly limited to 3 minutes.
- Disqualification and failure criteria: An aircraft that fails to maintain safe flight for at least 30 seconds with the 1,000 mL payload, or exhibits visible leakage before landing, will receive a score of zero for that attempt.
- Advancement and attempts: Only teams whose aircraft safely complete the loaded flight in the Qualifier Round will be eligible to advance to the Main Round. Each team is allowed two attempts, and the higher score will stand as the team's official Qualifier Round score. The top 30 teams will qualify for the Main Round.
- Financial Reimbursement: In addition to advancing, the top 30 qualifying teams will receive a material cost reimbursement of INR 5,000 per team. To facilitate this transfer, the qualifying team must provide the bank account details of one designated team member.
