Twin Rotor Helicopter. The goal is to make it fly with the most 3d capability as possible that is inherent. It led to the development of the boeing chinook family of aircraft that would serve in many nations into the 21st century.
Lego.com description this is a description taken from lego.com. Chinooks have several features to optimize operation with a glass cockpit for mission management including a digital control system for crew safety, cargo management to shift from missions. It was worth it for new delhi to avail of the helicopters for its army's use.
