For an aeronautical engineer it was the perfect day and a perfect end to a quest that has consumed his life for more than 30 years. Yesterday Dr. James DeLaurier, an aeronautical engineer and professor emeritus at the University of Toronto's Institute for Aerospace Studies, fulfilled a lifelong dream, seeing his manned mechanical flapping-wing airplane, or ornithopter, fly — a dream first imagined by Leonardo da Vinci. And with the successful flight DeLaurier has been lucky enough to touch what many describe as the Holy Grail of aeronautical design, achieving a place for himself, his team of volunteers and students...