FAAの筆記試験(Knowledge Exam)について。 : Privateの筆記試験について : PVTの問題へ : IFR、筆記の解説 : IFR問題へ
2009 Instrument Written Exam (FAA Knowledge Test)
1. PLT128
Test data indicate that ice, snow, or frost having a thickness and roughness similar to medium or coarse sandpaper on the leading edge and upper surface of an airfoil can
A) reduce lift by as much as 50 percent and increase drag by as much as 50 percent.
B) increase drag and reduce lift by as much as 25 percent.
C) reduce lift by as much as 30 percent and increase drag by 40 percent.
あるテストの結果、中位から粗めの紙やすり程度の厚さとザラツキが有る氷、雪、霜がLeading Edgeや翼の上に付着した場合の影響は。
A) 揚力を50%減少させ、抗力を50%も増やす。
B) 揚力と抗力を、最大で25%増す。
C) 揚力を最大で30%低下させ、抗力を40%も増やす。
霜について : Icingについて