Album below, from right to left:
Azi27 Dione, single seat light helicopter.
Azi26 Lelantos, 6 seat medium helicopter.
Azi23 Helios, heavy cargo helicopter hybrid (can fly like a plane too).
Azi22 Eos, heavy cargo helicopter.
Azi20 Selene, heavy cargo helicopter.
Azi21 Hyperion, heavy cargo helicopter, beats the Mil Mi-26 in both cargo volume and lifting power, has more cargo volume than a 747.
Last but not least: Azi24 Cronus, ultra heavy cargo helicopter hybrid. Loosely based on the Mil V-12. The Cronus has the length of a 747 and is able to airlift the 65t. M1A2 Abrams main battle tank. The largest and most powerful helicopter ever built, both in KSP and real life. Cronus weighs 173t. with tanks full.
Most of them are powered by the Asura II engine using 50 blowers. Lelantos and Dione have a less powerful version (20 and 10 blowers).
Download links:
https://kerbalx.com/Azimech/77I-Azi20-Selene-v10
https://kerbalx.com/Azimech/77I-Azi21-Hyperion-v10
https://kerbalx.com/Azimech/77I-Azi22-Eos-v10
https://kerbalx.com/Azimech/77I-Azi23-Helios-v10
https://kerbalx.com/Azimech/77I-Azi24-Cronus
https://kerbalx.com/Azimech/77I-Azi25-Saline-v10
https://kerbalx.com/Azimech/77I-Azi26-Lelantos
https://kerbalx.com/Azimech/77I-Azi27-Dione