7.1 PURPOSE.
a. The purpose of this chapter is to provide the best available performance data. Regular use of this information will enable you to receive maximum safe utilization of the helicopter. Although maximum performance is not always required, regular use of this chapter is recommended for these reasons:
(1)
Knowledge of your performance margin will allow you to make better decisions when unexpected conditions or alternate missions are encountered.
(2)
Situations requiring maximum performance will be more readily recognized.
(3)
Familiarity with the data will allow performance to be computed more easily and quickly.
(4)
Experience will be gained in accurately estimating the effects of variables for which data are not presented.
b.
The information is primarily intended for mission planning and is most useful when planning operations in unfamiliar areas or at extreme conditions. The data may also be used in .ight, to establish unit or area standard operating procedures, and to inform ground commanders of performance/risk trade-offs.
7.2 CHAPTER 7 INDEX.
The following index contains a list of the sections, titles, .gure numbers, subjects and page numbers of each perfor-mance data chart contained in this chapter.
Section
and
Figure
Number Title Page
I INTRODUCTION ................... 7-1
7-1 Temperature Conversion
Chart......................................... 7-4
II MAXIMUM TORQUE
AVAILABLE........................... 7-5
7-2 Aircraft Torque Factor
(ATF) ....................................... 7-6
7-3 Maximum Torque Available -
30-Minute Limit ...................... 7-7
III HOVER.................................... 7-8
7-4 Hover -Clean
Con.guration ........................... 7-9
7-5 Hover -High Drag .................. 7-11
IV CRUISE ................................... 7-12
7-6 Sample Cruise Chart -Clean.... 7-14
7-7 Cruise -Pressure Altitude Sea
Level ........................................ 7-15
7-8 Cruise High Drag -Pressure
Altitude Sea Level................... 7-21
7-9 Cruise -Pressure Altitude
2,000 Feet ................................ 7-27
7-10 Cruise High Drag -Pressure
Altitude 2,000 Feet.................. 7-33
7-11 Cruise -Pressure Altitude
4,000 Feet ................................ 7-39
7-12 Cruise High Drag -Pressure
Altitude 4,000 Feet.................. 7-45
7-13 Cruise -Pressure Altitude
6,000 Feet ................................ 7-51
Change 2 7-1
Section Section
and and Figure Figure Number Title Page Number Title Page
7-14
Cruise High Drag -Pressure VIII FUEL FLOW........................... 7-140
Altitude 6,000 Feet.................. 7-57
7-33 Single/Dual-Engine Fuel Flow................................. 7-141 7-15 Cruise -Pressure Altitude IX AIRSPEED SYSTEM 8,000 Feet ................................ 7-63 CHARACTERISTICS ............. 7-142 7-16 Cruise High Drag -Pressure 7-34 Airspeed Correction Altitude 8,000 Feet.................. 7-69 Chart -Clean .......................... 7-143 7-17 Cruise -Pressure Altitude 7-35 Airspeed Correction 10,000 Feet .............................. 7-75 Chart -High Drag ................... 7-144
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