This week 34 years ago

时间:2019-02-28 05:08:00166网络整理admin

Danger, Boeing 747 ahead Jumbo jets create a wake that is more hazardous than is generally realised. Recent research indicates that present rules which permit large planes to fly close to jumbos – Boeing 747s – are dangerous. Air turbulence caused by aircraft wings is similar to the wake of a boat and is noticeable far behind a plane – up to 75 kilometres in the case of a jumbo. The turbulence weakens as it gets further from the plane, but it can be hazardous to large planes as much as 10 kilometres behind a jumbo,