UAS Loading, Performance & Emergency Procedures Flashcards
7 cards from real RPC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 UAS Loading, Performance & Emergency Procedures flashcards as text
How does high density altitude affect a multirotor UAS's performance?
Answer: It reduces rotor thrust output, requiring higher RPM for the same lift
High density altitude means thinner air, so rotors generate less thrust per revolution and must spin faster, drawing more power and reducing hover efficiency.
A remote pilot notices the sUAS is consistently drifting to the left during hover. This is MOST likely caused by:
Answer: An unbalanced payload shifting the center of gravity left
A payload that shifts the CG laterally causes the flight controller to continuously compensate, resulting in persistent drift toward the heavier side.
Which factor has the GREATEST influence on a fixed-wing UAS's takeoff roll distance?
Answer: Gross weight and headwind component
A heavier aircraft requires more lift to become airborne, and a headwind reduces the ground speed needed to achieve flying speed, both directly affecting takeoff distance.
During flight, a pilot observes the UAS climbing unexpectedly without control input. The MOST probable cause is:
Answer: An updraft or thermal lifting the aircraft
Thermals and updrafts can exert significant vertical lift on a UAS, causing unexpected altitude gain independent of pilot commands.
When calculating payload capacity, a remote pilot must ensure the total weight including payload does NOT exceed the:
Answer: Manufacturer's maximum gross takeoff weight
The manufacturer's maximum gross takeoff weight is the structural and performance limit; exceeding it risks structural failure and degraded flight characteristics.
A sUAS experiences a loss of GPS signal mid-flight. In 'Attitude Mode' the aircraft will:
Answer: Maintain altitude and heading without position hold
Without GPS, the flight controller switches to attitude mode, stabilizing pitch and roll but no longer holding position, requiring the pilot to manually control drift.
Which condition would MOST likely cause a lithium-polymer battery to deliver reduced flight time on a warm day?
Answer: The battery was used for three consecutive flights without cooling time
Consecutive flights without cooling cause LiPo battery temperature to rise excessively, which degrades internal resistance and reduces usable capacity.