DURATION: 1.5 Hrs
OBJECTIVES
During this lesson, the student will learn the factors affecting helicopter performance and the theory of calculating helicopter performance.  

Content
A) Helicopter performance
1) Effect of density altitude
a) Definition
b) Air density
c) Pressure altitude
d) Temperature
e) Moisture
f) Computing density altitude on chart
g) Effect on hovering, takeoff and rate of climb
2) Effect of gross weight
a) On power available
b) On hovering ceiling
c) On takeoff and rate of climb
3) Effect of wind
a) No wind
b) Strong wind
c) Gusty wind
d) Wind direction
4) Nomenclature
a) IGE/OGE
b) MTOW
c) CoG
d) VX
e) VY
f) VNE (Power on/off)
g) VBG

B) Performance Prediction
1) Methods for predicting helicopter performance
a) Payload
b) Hovering ceiling
c) Gross weight 
d) Service ceiling 
e) Performance charts
f) Performance Applications

COMPLETION STANDARDS
This lesson will be complete when, by oral examination, the student displays an understanding of the material presented and has completed the study assignment.