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Fall 2018 - Spring 2019
Fall 2018 - Spring 2019
Fall 2018 - Spring 2019
spring 2018
Analysis of apache ah-64 helicopter
Helicopters are fascinating and chaotic aerodynamic creations. Like airplanes, helicopters fly on the basis of thrust and lift. However, unlike airplanes, helicopters force a downwash which flows through the rotor profile and toward the ground. This gives the helicopter strange and unique qualities, such as stalling retreating blades and severely limited translational speed.
This project was an extensive solo exploration into how the Apache AH-64 helicopter manages to fly and how power is allocated throughout the helicopter. Much of my understanding of aerodynamics derives from this experience.
Helicopter Basics
Quite simply, helicopters work by accelerating air downwards to induce a thrust force upwards.
Hover Power
The Apache has 2 General Electric T700-GE-701 turboshafts which supply 1,260 kW each, putting a maximum service limit on the Apache of 9,440 m, by my analysis. This was an overestimate of the 6,400 m listed in its specifications, because not all of the turboshaft power goes toward hovering.
Power Summary
This breakdown of Apache power consumption was used to determine the maximum translational speed of 64 m/s and an optimal speed of 34 m/s.
Helicopter Basics
Quite simply, helicopters work by accelerating air downwards to induce a thrust force upwards.
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