Techniques to Make Drones Operate at High Altitudes

1. Insufficient lift in thin high altitude atmospheric conditionsAdvanced Propulsion & Airframe Engineering40 documents (15%)
2. Limited flight endurance from onboard battery capacity constraintsAdvanced Propulsion & Airframe Engineering16 documents (6%)
3. Aerodynamic instability in low air density environmentsAdvanced Propulsion & Airframe Engineering15 documents (6%)
4. Energy scarcity for long endurance solar flightAdvanced Propulsion & Airframe Engineering13 documents (5%)
5. Heavy lift payload capacity for military logisticsHigh-Altitude Logistics & eVTOL13 documents (5%)
6. Energy scarcity for long endurance stratospheric flightDeployment & Field Validation12 documents (5%)
7. Stratospheric surveillance gaps between drones satellitesHigh-Altitude Logistics & eVTOL11 documents (4%)
8. Signal interference from high altitude cellular network misalignmentAdvanced Propulsion & Airframe Engineering9 documents (3%)
9. System failure from extreme mountain environmental stressDeployment & Field Validation9 documents (3%)
10. High launch costs for stratospheric drone deploymentHALE & Stratospheric Systems8 documents (3%)
11. Limited flight endurance for high elevation reconnaissanceDeployment & Field Validation7 documents (3%)
12. Satellite deployment costs for global connectivityDeployment & Field Validation6 documents (2%)
13. Indigenous strategic drone design capability deficitsHALE & Stratospheric Systems6 documents (2%)
14. Heavy payload transport across long range mountain terrainHigh-Altitude Logistics & eVTOL6 documents (2%)
15. Geopolitical restrictions on extreme altitude airspace accessDeployment & Field Validation5 documents (2%)

Largest 15 of 44 problems