Page Comparison

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🟩 added to Analysis and Response

General Failures

1. 🟩 Part delivery is much slower than expected, pushing back testing and therefore project deadlines

2. Members miss deliverable due to increased work load

3. Schedule didn’t allow for multiple iterations to occur, now we’re stuck with a less-than-ideal product

4. 🟩 The drone isn’t competitive

5. The drone crashing during competition

6. battery level low

Mechanical Airframe Failures

1. Unanticipated electromagnetic shielding/interference on the frame, requiring electronics to be placed elsewhere

2. Bolts missing/coming off during flight

3. Landing gear fails on impact

4. Barbies are not secured properly in flight

5. Boards are not secured in flight

6. Water gets into the avionics compartment

7. Parts disconnect during flight (wings, tail)

8. Control surfaces fail

9. Motor failure

10. Sensors dislodged

11. Heat causing deformation of 3D printed partsGround looping

12. Mechanical failures (permanent deformation or breaking) caused by stresses

13. Elastic deformation of frame due to stresses

Mechanical Ground Station Failures

1. Antenna towers fall over

2. Wires disconnect in inaccessible regions of the tower

3. Devices and equipment

Electronic Failures

1. Wires disconnecting

2. Boards shorting

3. static electricity (possible ground plane)

4. Inclement weather during flight (limit flight window)

5. Antenna Brownout (search pattern)→ drone altitude hold, antenna pattern search → fatal failure.

6. hardfault (failover)

7. Batteries not charged

   1. batteries discharging past safe levels

Software Failures

1. Sens failure (glide)

2. autopilot failure (pilot takeover)

3. fly by wire failure

   1. lost AHRS // no inertial nav → fatal failure

   2. incorrect command deciphering → pilot disarm / takeover → fatal failure

   3. control surface output inverted. → pilot disarm/takeover → fatal failure.

4. telemetry lost (follow VFR & divert)

   1. telemetry modem failure

   2. board modem module failure

   3. software manager failure.

5. controls/PID failure

   1. incorrect PID values

   2. controls runaway (I term runaway?)

6. RC link lost (divert and glide)

7. Landing Pad not found

   1. search → find?

8. heading lost

   1. see 3, 6.

9. Interference from other teams

Risk Analysis (use to understand impact)

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