Airgroup 51

General Forums (Public) => DCS World General Discussion (Public) => Topic started by: AG-51_Thud on December 12, 2017, 08:45:06 AM

Title: Recommended Tanker speeds
Post by: AG-51_Thud on December 12, 2017, 08:45:06 AM

In reguards to inflight refueling tanker, what air speeds do you recommend for the S-3B?

Title: Re: Recommended Tanker speeds
Post by: AG-51_Fireball on December 12, 2017, 11:47:06 AM

I've been setting it at about 230 knots IAS. I'm sure that's based on something I read somewhere. I'll try to find the source when I get back in town.

Title: Re: Recommended Tanker speeds
Post by: AG-51_Thud on December 12, 2017, 12:27:16 PM

Thanks.

Title: Re: Recommended Tanker speeds
Post by: AG-51_Razor on December 12, 2017, 12:43:58 PM

It also depends a great deal on what altitude you have the tanker track set to. I am pretty sure that the airspeeds you put into the ME are true airspeed and what we end up seeing on our HUD behind the basket is indicated airspeed. I recall that we used 350 for the IL-78 up at 25000' back when we were flying the modded Hornets.

Title: Re: Recommended Tanker speeds
Post by: Apache600 on December 12, 2017, 01:49:48 PM

When you set the speeds in ME, you're setting true speeds (think ground speed if there's zero wind).  That's why Razor's comment is spot on.  270Knots at 6,000 feet is going to be about 230IAS, where as 270Knots at 25,000 would be roughly 160IAS.

Title: Re: Recommended Tanker speeds
Post by: AG-51_Razor on December 12, 2017, 04:49:22 PM

Yeah, and I believe that the old IL-78 struggles mightily up at 25000 at that low of an airspeed.

Title: Re: Recommended Tanker speeds
Post by: AG-51_Thud on December 12, 2017, 06:08:51 PM

Thanks to both of you.   :thumbsup: :thumbsup: