Enabling Objectives

CHAPTER 3

HELICOPTER AERODYNAMICS WORKBOOK

3.10

Define ground effect by stating what causes it.

3.10.1 State how ground effect affects power required.

3.11

Define ground vortex and what causes it.

3.12

Define translational lift by stating the phenomena which cause it.

3.12.1 State how translational lift affects power required.

3.13

State the effect of dissymmetry of lift on the helicopter.

3.13.1 State the methods by which dissymmetry of lift is overcome.

3.14

State the effect of phase lag on helicopter control.

3.15

Define blowback by stating the cause.

3.15.1 Describe the effect blowback has on helicopter attitude and airspeed.

3.16

Identify fore and aft asymmetry of lift by stating its cause and how it affects helicopter

flight.

3-2 HELICOPTER POWERED FLIGHT ANALYSIS