To summarize, science becomes knowledge by publication of research results. It then may become more general knowledge as writers of textbooks pick and choose what to put in their texts, and as professors and teachers then decide what to stress from those textbooks.
The Hughes H-4 Hercules (also known as the  Spruce Goose ; registration NX37602) is a prototype heavy strategic airlift military transport aircraft designed and built by the Hughes Aircraft Company.oward Hughes was called to testify before the Senate War Investigating Committee in 1947 over the use of government funds for the aircraft. During a Senate hearing on August 6, 1947 (the first of a series of appearances), Hughes said: The Hercules was a monumental undertaking.
A multi-role, medium-size utility helicopter, the Sikorsky S-76 was manufactured by Sikorsky Aircraft Corporation, US. Operations carried out by the S-76 include executive passenger transport and emergency medical services. The S-76 can accommodate 14 people including two pilots.It has a retractable landing gear. Sikorsky Aircraft Corporation received Federal Aviation Administration (FAA) certification for its S-76C++, a variant of the S-76, in January 2006.he S-76 can fly at a maximum speed of 287km/h. The ferry range and service ceiling of the helicopter are 639km and 4.572m respectively. The maximum takeoff weight of the S-76 is 5,306kg while the empty weight is 3,177kg.