Translation of "rasante" into English

Requisitos de raio relativos a partes do grupo 1 (contacto rasante):

Radius requirements concerning group 1 parts (contacted by grazing):

A missão vai exigir navegação a baixa altura. Portanto rasantes são permitidos.

Now, the work you will be asked to do will require a little low altitude flying, so hedge-hopping on this trip is perfectly okay.

O objetivo era desestimular ataques aéreos rasantes e, quem sabe, interceptar bombas voadoras.

Their purpose was to discourage low- level air raids and hopefully snag a few flying bombs in midair.