Question

For mission with payload drop, the take-off gross weight W0 is given by ____

(a) W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel + Wempty

(b) W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel

(c) W0 = Wcrew + Wdropped payload + Wfixed payload + Wempty

(d) W0 = Wcrew + Wdropped payload + Wfuel + Wempty

This question was posed to me during an interview for a job.

Question is from Rubber-Engine Sizing topic in division Initial Sizing of Aircraft Design

Answer 1

The correct choice is (a) W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel + Wempty

To elaborate: Takeoff gross weight of the aircraft is the net or total weight of each and every possible components and systems. Typically, aircraft gross weight is divided into number of sub weight categories such as crew weight, fuel weight, empty weight etc. A typical takeoff gross weight can be expressed as W0 = Wcrew + Wdropped payload + Wfixed payload + Wfuel + Wempty.