Willie Nelson Posted October 19, 2021 Posted October 19, 2021 I have done some searching however I cannot find if there is likely to be any changes to the unchanging power requirements to both IGE and OGE hovering. To be clear I am talking about the power required to hover a 6600lb Huey being 29 inches of torque both in ground effect and out of ground effect. I may have missed a post that has already discussed this elsewhere. i7700k OC to 4.8GHz with Noctua NH-U14S (fan) with AORUS RTX2080ti 11GB Waterforce. 32GDDR, Warthog HOTAS and Saitek rudders. HP Reverb.
DishDoggie Posted October 23, 2021 Posted October 23, 2021 I haven't looked in the manual for any of this info give it a look and see if it has anything to help https://milviz.com/Online_products/Manuals/UH-1H_Flight_Manual.pdf
Willie Nelson Posted October 29, 2021 Author Posted October 29, 2021 (edited) On 10/24/2021 at 3:56 AM, DishDoggie said: I haven't looked in the manual for any of this info give it a look and see if it has anything to help https://milviz.com/Online_products/Manuals/UH-1H_Flight_Manual.pdf Hi DishDoggie, Perhaps I haven't explained myself very well. I'll have another go: There is a known problem in the DCS Huey where by the torque (power) required when hovering close to the ground is the same as that required when hovering out of ground effect (IGE versus OGE). This is NOT a correct representation of the flight model of a Huey or any other helicopter. In real helo's the difference between toque required IGE should be noticeably less than that required when hovering OGE. For example at the MTOW of 9500 lbs the chart shows, in the bottom LHS of the screenshot that the torque required to lift 9500lbs will be 36.8 psi in ground effect @5ft versus 42.1 psi out of ground effect (say 100 feet AGL) this is why helicopters may sometimes "settle" when overweight but not necessarily touchdown because of the amount of lift being, in part, a function of the square root of the distance from the ground. This effect is caused by the reduction in induced drag. I am hoping that their is discussion about rectifying this missing phenomena within DCS but I have not been able to find any as yet. Edited October 29, 2021 by Willie Nelson i7700k OC to 4.8GHz with Noctua NH-U14S (fan) with AORUS RTX2080ti 11GB Waterforce. 32GDDR, Warthog HOTAS and Saitek rudders. HP Reverb.
Flappie Posted October 29, 2021 Posted October 29, 2021 Hi Willie, could you please make a track illustrating your point? I guess the idea is to zoom a little bit on the gauges to see what's happening during lift off, then during the ascent. ---
Willie Nelson Posted October 30, 2021 Author Posted October 30, 2021 18 hours ago, Flappie said: Hi Willie, could you please make a track illustrating your point? I guess the idea is to zoom a little bit on the gauges to see what's happening during lift off, then during the ascent. Hi Flappie, I probably have to retract my assertion. I recently did a comparison of IGE/OGE and I seemed to be able to get the aircraft to hover at 29 psi of torque both in ground effect and out of ground effect (100 feet) however when I attempted to replicate this, I could not repeat the results. So sticking with the scientific method, if I cannot replicate my results then I will withdraw my claim, sorry. In fact, moreover I held around 31 psi of torque at a 100 feet hover in the Caucus free flight instant action scenario and it settled beautifully at around a 5 foot hover, which is exactly what I would expect. So my bad, I'm not sure how I had mixed up my initial observations. Disregard. 1 1 i7700k OC to 4.8GHz with Noctua NH-U14S (fan) with AORUS RTX2080ti 11GB Waterforce. 32GDDR, Warthog HOTAS and Saitek rudders. HP Reverb.
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