SME_Umbrage

I think a good way to look at "effective translational lift (ETL) in a heli is similar to when one holds / throws a frisbee. When you hold the frisbee in your hand, you bear the full weight of the disk. If thrown below a certain airspeed the disk falls to the ground without apparent lift (in other words it is not flying). If you throw the disk with sufficient speed the disk (wing) begins to fly. A helicopter while hovering is supporting it's full weight and let's say for our example is using 60% of it's available power. When it begins foward flight and transitions through ETL (16-24 knots) the rotor disk begins to fly in a fashion very similar to a frisbee. This creates the net effect of the aircraft wanting to pitch / baloon-up which must be countered by foward cyclic. So now we have both the lift provided through the pitch in the rotors AND the additional lift provided by the disk (rotors) flying above ETL. In addition because the disk is now flying and aiding in providing lift, the power (collective) can be reduced (let's say to 35%) and the aircraft still remain airborn and, in fact, contiue to climb. There is a bit more to this, but I hope this helps explain. The reverse of course is true when descending back through ETL the aircraft will suddenly drop if collective is not applied to augment the loss of lift when the disk is no longer flying (above ETL). This is also why we hear war stories from Vietnam pilots where they'd face the overloaded aircraft into the wind and have the crew chief and gunner run along side until the aircraft passed through ETL and the Huey could leave the ground. "Above the Best" Royal Blue 87

My progression in RL rotary wing was TH-55, UH-1H, UH-60, back to UH-1, then back to UH-60, then OH-58 and finally back to UH-1. Yes, strange progression but a matter of going from active duty to National Guard and flying what's available. So my take on the difference in handling between aircraft is from that perspective. I'm a newb to PC simming and DCS Huey is my first experience. So for me the hard part is getting used to the desktop flight controls. No doubt having true to life controllers would make it easier (that's my alibi and I'm sticking with it :laugh:). Getting back to the quote above, for me the UH-60 is much more stable than the Huey in part due to its size / mass, but also because if it's stability augmentation system. The Huey needs considerably more continuous micro inputs to create the outward effect of stability. That being said I will need to learn how to tune my flight controllers before rendering an informed verdict. I suspect as long as the controllers are generic there will always be some differences from the real thing. All in all I'm blown away by Huey sim and am looking foward to getting to learn the ropes and tips from the simming community. "Above the Best" Royal Blue (cap) 87

First Post on Forum. So still figuring out how this thing works. :joystick: All the UH-1 sound recordings utilized for DCS: UH-1 are authentic and taken from two Vietnam era Hueys, one located in Peru, Indiana and the second in Scottsdale, Arizona. The recording apparatus were a mixture of professional recording equipment, video cameras (to help synchronize sound), smartphones and just about anything else that was available. In many cases all the equipment was being utilized concurrently (again to synchronize sound). Microphones were placed or held in the cockpit during all states of flight from startup to shutdown with other mics being placed in the ear cup of the headsets (to capture the sound as the pilot would hear it). The same mixture of equipment was used externally to record everything from door panels being opened to holding a wind protected microphone (dead cat cover) within a foot or two of the engine on startup and shutdown. Again externally the aircraft was recorded from varying distances from almost directly below to 100M + away laterally, in front and behind during hovering, taking off and landing. Also the aircraft made multiple passes over the recording crew at varying altitudes. I think the difficult is likely in processing the varying sounds to reflect the wide range that may be exhibited by the aircraft under various conditions, modes of flight, etc. And of course finding and processing clean loops of sound that can be massaged to avoid hearing any obvious repetition. I'm sure with time other signature Huey sound bits can be pulled from the files and incorporated into updated builds. Hope this helps to clarify