Maarten Raven Maarten Raven Maarten J. Raven (born 1953, Utrecht) is a Dutch Egyptologist. Raven is the curator (since 1978) of the department of Egyptology at the Rijksmuseum van Oudheden in Leiden. In addition to his work at the museum, he has been active as an archeologist in Saqqara since 1975. In Saqqara, he has been working (as joint field director since 1999) on a New Kingdom archeological burial site, a cooperation of the Rijksmuseum van Oudheden and the Egypt Exploration Society (1975–1998) and Leiden University (1999-) In September 2012 he was also appointed as extraordinary professor 'Museology of Ancient Egypt' at
Saqqara Bird he considered an attempt to create aerodynamic lift. In spite of these claims, however, no ancient Egyptian aircraft have ever been found, nor has any other evidence suggesting their existence come to light. As a result, the theory that the Saqqara Bird is a model of a flying machine is not accepted by mainstream Egyptologists. Hallion notes that it is "far too heavy and unstable itself to fly." Aerodynamics expert Simon Sanderson tested a replica model in a wind tunnel without a tailplane and found that it produced “four times the glider’s own weight in lift.” In Liverpool University, Sanderson