неблагоприятно влиять

Неблагоприятно влиять, Неблагоприятно сказываться на-- to be detrimental to; to have a detrimental effect on; to adversely affect

 Thus the shortening of the combustor was not considered to be detrimental to performance.

 This had a detrimental effect on light-off performance of the combustor.

 Note that the "design" temperature rise could only be achieved by increasing the oil flowrate above the values shown, which would adversely affect the power loss.