B737NG 항공기 이륙 중 미부지면접촉에 관한 연구

A Study on B737NG Aircraft Tail Strike during Takeoff

  • 노건수 (한서대학교 항공교통관리학과)
  • 투고 : 2009.12.04
  • 심사 : 2009.12.16
  • 발행 : 2009.12.31

초록

According to the aviation statistics, tail strike incidents and accidents are cyclic. Although many tail strikes occurred during takeoff, these are less than during landing cases. Many cases are related on human factors. In my opinion it is possible to analyze the causes of takeoff tail strikes to some extent. There are major casual factors of tail strike during takeoff such as; (1) Mis-trimmed horizontal stabilizer (2) premature rotation prior to $V_R$ (3) Excessive pitch up rate during rotation (4) Improper use of the flight director. Among these causes improper use of flight director is excluded in this paper because it is recommended that pilot should use flight director after airborne. So I analyzed the other three causes as following. Firstly, because mis-trimmed stabilizer is related to center of gravity(CG), the relationship between stabilizer and CG is reviewed. Secondly, concerned premature rotation prior to $V_R$ I reviewed the background of rotation speed($V_R$) establishment and analyzed theoretically what speed leads to tail strikes. Thirdly, concerning excessive pitch up rate during rotation I analyzed what excessive pitch up rate can decrease ground clearance while using FDR data.

참고문헌

  1. Boeing, 737-NG Flight Crew Training Manual, 2005
  2. Boeing, 737-800 Flight Planning and Performance Manual, 2005
  3. Boeing, 737-800 Takeoff Analysis Charts, 2009
  4. Boeing, Tail Strikes & Hard Nose Gear Landings - Asia Safety Conference, 2003
  5. Boeing Performance Software Version 2.1
  6. FAR Part 25.107
  7. Boeing, Flight Crew Performance Charts, 2002
  8. Boeing, Tail Strikes and Strong Gusty Winds, 2006