By Bjorn Fehrm

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Introduction

April 13, 2017, © Leeham Co.: Last week we finished the sizing of the fuselage for an NMA design. Now we continue with the wing. We go through the key parameters that will decide the performance of the wing and the aircraft.

The NMA is a critical design case. The performance envelope has to be just right. Too high and the economics of the aircraft won’t work, both for purchase price and operational costs.

Figure 1. The NMA takes more and more the shape of a 767 replacement (A United 767-200). Source: United

Summary:

• Wing design is the mixing of conflicting requirements to a successful compromise.
• The NMA wing will use the design principles of the Boeing 787/777X wings but will be different in area, size and plan-form.
• The wing is sizing the engines, something we will look at in the next article.