Gavski1 Posted April 16, 2019 Posted April 16, 2019 I'm setting up a practice refuelling in ME with KC130. when I approach the tanker it is only doing about 180 kts IAS, this brings me very close to stall and I cant control the plane. As I get closer the tanker starts to speed up to around 230kts and I'm then trying to catch up with it again In ME the speed of the tanker seem set @ 356 kts and cannot be changed. Anyone help me out on this? FC3, F86 Sabre, Mig 21Bis, A10C, C-101, AJS-37 Viggen, F/A18-C Hornet, UH1-H Huey, AV8-N/A Harrier, Mirage 2000c, Spitfire MKix, Me BF109 K-4, Tornado GR4 (one day).
Captain Orso Posted April 16, 2019 Posted April 16, 2019 When you set the Orbit Advanced Waypoint Action, set the speed to 360, or so; that's the ground speed. There is probably a formula for calculating IAS from ground speed and altitude, but I don't know it. Worst case, just try a few different values, until you get the results you wish. The tanker should fly at a steady speed, and not accelerate when you go to AR. When you hit the wrong button on take-off System Specs. Spoiler System board: MSI X670E ACE Memory: 64GB DDR5-6000 G.Skill Ripjaw System disk: Crucial P5 M.2 2TB CPU: AMD Ryzen 7 7800X3D PSU: Corsair HX1200 PSU Monitor: ASUS MG279Q, 27" CPU cooling: Noctua NH-D15S Graphics card: MSI RTX 3090Ti SuprimX VR: Oculus Rift CV1
XtraChrisP Posted April 16, 2019 Posted April 16, 2019 Here ya go. http://www.hochwarth.com/misc/AviationCalculator.html#CASMachTASEAS Refueling IAS for 29" baskets (the FW drogues) is 220 to 250 knots IAS. To use this calculator, set your refueling speed (235 is a pretty good number) in CAS, set altitude to that of your refueling alt, and set the speed of the track in the mission editor to the TAS computed by the website I just linked to. For example, 235 at 19,000' calculates out to 311 knots TAS. If you want your track at 23,000 that calculates to 331 over the ground. Wind speeds may vary this a bit, but when I set up tracks I always use this calculator to make sure I'm getting a good AR speed. Don't forget that when you're setting up your orbit, the speed to the waypoint doesn't matter, you have to set the orbit altitude and speed in the advanced waypoint settings. It sure would be nice to directly set a certain airspeed/mach number for aircraft in the mission editor...
Captain Orso Posted April 16, 2019 Posted April 16, 2019 Brilliant! Thanks, that will come in handy. :) When you hit the wrong button on take-off System Specs. Spoiler System board: MSI X670E ACE Memory: 64GB DDR5-6000 G.Skill Ripjaw System disk: Crucial P5 M.2 2TB CPU: AMD Ryzen 7 7800X3D PSU: Corsair HX1200 PSU Monitor: ASUS MG279Q, 27" CPU cooling: Noctua NH-D15S Graphics card: MSI RTX 3090Ti SuprimX VR: Oculus Rift CV1
Gavski1 Posted April 16, 2019 Author Posted April 16, 2019 When you set the Orbit Advanced Waypoint Action, set the speed to 360, or so; that's the ground speed. There is probably a formula for calculating IAS from ground speed and altitude, but I don't know it. Worst case, just try a few different values, until you get the results you wish. The tanker should fly at a steady speed, and not accelerate when you go to AR. Thats it, cheers. I did set the orbit in advanced waypoint but did think about the speed. FC3, F86 Sabre, Mig 21Bis, A10C, C-101, AJS-37 Viggen, F/A18-C Hornet, UH1-H Huey, AV8-N/A Harrier, Mirage 2000c, Spitfire MKix, Me BF109 K-4, Tornado GR4 (one day).
Gavski1 Posted April 16, 2019 Author Posted April 16, 2019 Neat calculator, thanks FC3, F86 Sabre, Mig 21Bis, A10C, C-101, AJS-37 Viggen, F/A18-C Hornet, UH1-H Huey, AV8-N/A Harrier, Mirage 2000c, Spitfire MKix, Me BF109 K-4, Tornado GR4 (one day).
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