RPC UAS Loading, Performance & Emergency Procedures 2

Question 1

How does high density altitude affect a multirotor UAS's performance?

Accepted Answer

It reduces rotor thrust output, requiring higher RPM for the same lift

Answer

High density altitude means thinner air, so rotors generate less thrust per revolution and must spin faster, drawing more power and reducing hover efficiency.

Question 2

A remote pilot notices the sUAS is consistently drifting to the left during hover. This is MOST likely caused by:

Accepted Answer

An unbalanced payload shifting the center of gravity left

Answer

A payload that shifts the CG laterally causes the flight controller to continuously compensate, resulting in persistent drift toward the heavier side.

Question 3

Which factor has the GREATEST influence on a fixed-wing UAS's takeoff roll distance?

Accepted Answer

Gross weight and headwind component

Answer

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.

Question 4

During flight, a pilot observes the UAS climbing unexpectedly without control input. The MOST probable cause is:

Accepted Answer

An updraft or thermal lifting the aircraft

Answer

Thermals and updrafts can exert significant vertical lift on a UAS, causing unexpected altitude gain independent of pilot commands.

Question 5

When calculating payload capacity, a remote pilot must ensure the total weight including payload does NOT exceed the:

Accepted Answer

Manufacturer's maximum gross takeoff weight

Answer

The manufacturer's maximum gross takeoff weight is the structural and performance limit; exceeding it risks structural failure and degraded flight characteristics.

(RPC) Remote Pilot Certificate Practice Test

(RPC) Remote Pilot Certificate Practice Test

RPC UAS Loading, Performance & Emergency Procedures 2