Practice · 12 problems · Paper

Printable Worksheet

Twelve problems to work by hand, from a first takeoff weight and the empty-weight trends in two units, through the wetted area and \(L/D\) of a regional jet and a turboprop against a jet, to a full sizing, a payload drop and the growth factor. Print it, show your work in the space provided, then check your final answers here.

First Weight Estimate · Worksheet

12 problems · Parts A–C
Name Course / section Date

Show your work in the space provided. Use \(g = 9.81\ \text{m/s}^2\), \(1\ \text{lb} = 0.4536\ \text{kg}\), \(1\ \text{lb/(hp h)} = 0.6083\ \text{kg/(kW h)}\), and give answers to 4 significant figures. You may use the Formula Sheet.

Answer sheet: final answers only.

How to use this worksheet

  1. Print it, or save it as a PDF. Each problem gets a dotted work space. It fits on six Letter or A4 pages.
  2. Work on paper. Part A covers the sizing equation and empty-weight trends, Part B \(L/D\) and fuel consumption, and Part C fuel fractions, closing the loop and sensitivities. Each problem names the lesson to review if you get stuck.
  3. Check your final answers with Show answer under each problem, or show them all at once. Only final answers are given here.

Part A · The sizing equation and empty weight

Problems 1–4 · Basic to intermediate · Lessons 1–2

Part B · Lift-to-drag ratio and fuel consumption

Problems 5–8 · Basic to challenge · Lessons 3–5

Part C · Fuel fraction, closing the loop, sensitivity

Problems 9–12 · Basic to challenge · Lessons 5–7