Does a dual-rotor helicoptor like the Chinook transition from hover to forward flight differently than a single rotor helicopter?
The cyclic (dubbed control stick for the CH-47) takes care of that, not separate collectives (there's only one collective for both rotors per seat).


For forward flight, the pilot moves the control stick forward; the thrust of the aft rotary wing is increased while the thrust of the forward rotary wing is decreased, causing the helicopter to move forward. Since there is a large range of longitudinal control, high forward speed and extremes in center-of-gravity travel are inherent.

Source: CH-47 familiarization manual (see pages 55-56; PDF; 40 MB)