J Matthew Lyon
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Celdynne Cheetah Mk. 1

mid-mounted turboprop bellicant

spring 2025

A variable-geometry wing, or “swing-wing”, is an engineering solution for aircraft operating in highly dynamic environments, allowing for both agile low-speed performance and high-speed transonic cruise. Featured on many military jets of the 20th century, a pilot manually controls the angle of wing sweep, allowing precise aerodynamic adaptation to operational need.

Innovative and successful, variable-geometry wings have nonetheless never seen application in passenger aircraft.

But what if they did? Modeled on early passenger jets of the formative 50s and 60s, the Rochlau R-21 ‘Tamper’ is my concept design for a mid-century swing-wing airliner. ▨

NATION

CLASSIFICATION

BE

BELLICANT

LENGTH

122′

WINGSPAN

84’/

127′

HEIGHT

31′

TOP SPEED

XXX

KN

RANGE

XXX

NMI

ARMAMENT

XXX

XX

M M X X V

J. Matthew Lyon

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