The joined wing is a new type of aircraft configuration which employs tandem wings arranged to form diamond shapes in both plan and front views. wind tunnel tests and finite- element structural analyses show that the joined wing provides the following advantages over a comparable conventional wing:… More

The joined-wing airplane is a new type of aircraft configuration employing two sets of wings rigidly connected together to form a triangulated self-bracing structure. finite-element structural analyses and wind-tunnel tests have shown that, compared to cantilever-wing aircraft, joined wing aircraft… More

Joined-wing airplanes employ two sets of wings rigidly connected together to form a triangulated self-bracing structure. structural analyses and wind-tunnel tests have shown that, compared to cantilever wings, joined wings are lighter, stiffer, and have higher span-efficiency factors, giving lower… More

Of the over 600,000 highway bridges and approximately 100,000 railroad bridges in the u.s., many are difficult to inspect because of limited accessibility. remote inspectionby unmanned aerial vehicles may provide a solution to this problem, but involves considerations of vehicle suitability… More