What is the Harrier's full name?

The full name of the Harrier aircraft is indeed McDonnell-Douglas Harrier. This name acknowledges the significant role that McDonnell Douglas, an American aerospace manufacturer, played in the development and production of the Harrier series, particularly the AV-8B Harrier II. The Harrier is famous for its vertical take-off and landing capabilities and has been used primarily by the U.S. Marine Corps and some foreign forces.

While the other names listed refer to various companies in the aerospace industry, they did not produce the Harrier aircraft. Each company has its own unique contributions to aviation, but the Harrier's design and development are specifically attributed to McDonnell Douglas. This presents a clear understanding of the aircraft's lineage and the companies involved in military aircraft development.