AH-64a [701c] PPC Program
Version 1.0
Copyright 2002, James M. Eli

This program quickly and easily computes performance data for an U.S. Army AH-64a Apache helicopter [with T-700-GE-701C engines] in a format similar to an U.S. Army Performance Planning Card (PPC). Specifically, the program calculates the following:

Hover:

• Torque Ratio (Single & Dual Engine)
• 2.5, 10 & 30 Minute Maximum Torques (Single & Dual Engine)
• Maximum Gross Weight IGE/OGE
• Go/No-Go IGE/OGE
• Hover Torque

Cruise:

• Vne
• TAS (Single & Dual Engine)
• Torque (Single & Dual Engine)
• Fuel Flow (Single & Dual Engine)
• Maximum Rate of Climb/Endurance IAS
• Maximum Range IAS
• Single Engine Minimum & Maximum IAS
• Single Engine Maximum Gross Weight

Miscellaneous:

• Maximum Rate of Climb
• Minimum & Maximum Load Factors
• Density Altitude
• Engine Starter Limitations
• Range and Endurance (time & distance)

Inputs Include:

• FAT, PA and GWt
• ETF #1 and #2
• Wheel Height
• Dual and Single Engine IAS
• Drag Area
• Anti-Ice On/Off

The algorithms used in this program have been extensively tested to ensure accuracy, however it is acknowledged that errors, omissions and slight dissimilarity of data between calculated and Operator's Manual charted information exist. In all cases of discrepancies, the aircraft Operator's Manual is the final authority for resolving these disparities. Use this program at your own risk.