Fisherman82 Posted January 29, 2018 Posted January 29, 2018 Im no Harrier expert so one thing that is a struggle for me is to know what takeoff-type that is possible with the current load and winds in a mission when the mission start. I cant find so much in the pocket guide about when a certain takeoff-type is possible and how to calculate nozzle rotation speed for short takeoffs. Im basically doing it by trial and error now, with no clue when to rotate the nozzles for example on short takeoffs. So Im thinking that a Excel-chart where you enter your weight and winds and get this information as output would be awesome. However I don't know how to do it myself so this is kind of a wish to someone that knows enough about the Harrier and Excel to do it. I would love to see it in the user files on the DCS site.
NeilWillis Posted January 29, 2018 Posted January 29, 2018 The real pilots manual is available. The data ought to be in there. I have a hunch we'll be getting some method of calculating it all in-flight some time too. When we'll get it is of course is much harder to calculate than the landing/take off data.
flyco Posted January 29, 2018 Posted January 29, 2018 As I understand it the VREST, computer will produce the data you're looking for via the MPCD - eventually. In the meantime, for my own use, I have produced a data sheet giving representative data. This is accurate only for Standard Temperature and Pressure (i.e 1013 mb and 15 degrees C). I interpolate for intermediate values and add or subtract a 'smidgen' for extra height or OAT. You're welcome to use it on a 'no liability' condition.AV-8B Performance and Limits.pdf
flyco Posted January 29, 2018 Posted January 29, 2018 Sorry, just noticed the Conventional Threshold Speeds are incorrect. They should be 135 kts for 18k and 20k, and thereafter 139, 142, 175, 183kts.
Fisherman82 Posted January 30, 2018 Author Posted January 30, 2018 As I understand it the VREST, computer will produce the data you're looking for via the MPCD - eventually. In the meantime, for my own use, I have produced a data sheet giving representative data. This is accurate only for Standard Temperature and Pressure (i.e 1013 mb and 15 degrees C). I interpolate for intermediate values and add or subtract a 'smidgen' for extra height or OAT. You're welcome to use it on a 'no liability' condition.Thank you! I will use it with your corrected speeds and if I should wreck my viritual Harrier because of it, I wont hold you responsible :) Skickat från min D5503 via Tapatalk
Nealius Posted January 31, 2018 Posted January 31, 2018 (edited) For STO, I made quick "rule of thumb" guesstimations from the performance charts in the NFM-400, using the 6 most common gross weights I use in DCS. (Trim 2° ND, STO Stop set to 50° or 55°, depending on gross weight, Nozzles 10°, Water on, Full throttle, release brakes, rotate nozzles to STO stop at NRS) 70% GW: NRS 60kts, Nozzles 55° 81% GW: NRS 80kts, Nozzles 55° 85% GW: NRS 90kts, Nozzles 50° 88% GW: NRS 95kts, Nozzles 50° 90% GW: NRS 100kts, Nozzles 50° 95% GW: NRS 110kts, Nozzles 50° I haven't looked at RVTO or VTO yet, but RVTO starts you at 35° nozzles, then rotate to 70° at 110% RPM according to the NATOPS manual. Edited January 31, 2018 by Nealius
Charly_Owl Posted January 31, 2018 Posted January 31, 2018 I'm working on it ;) Chuck's DCS Tutorial Library Chuck's Guides on Mudspike Chuck's Youtube Channel Chuck's Patreon
Soundwave197 Posted February 1, 2018 Posted February 1, 2018 Thats working for my lazy ass: Rolling takeoff I use water only if the runway is short, flaps set to auto. 20000-22000lbs, nozzle@0°, rotate at 100knts with nozzle to 60° 23000-25000lbs, nozzle@0°, rotate at 120knts with nozzle to 60° 25000-30000lbs, nozzle@0°, rotate at 140knts with nozzle to 60° 5sec after takeoff and positive climb reduce throttle to save rpm below 80% thrust. Slowly begin to rotate the nozzles. Keep your AoA betwen +5/-5° PC: i7 6700K - GTX980ti - ASUS Z170P D3 - 32GB DDR3 - Samsung 850Evo - 5TB HDD Displays: BenQ RL2455HM - Acer Pred. XB241H - BenQ RL2455HM Controller: Modded TM WH grip on VKB Glad.2PRO, TM WH Trottle, TM MFD`s, Saitek Rudder, 3xArduino Mega+Leonardo for AV8B panels, TIR5,
Flamin_Squirrel Posted February 2, 2018 Posted February 2, 2018 Thats working for my lazy ass: Rolling takeoff I use water only if the runway is short, flaps set to auto. 20000-22000lbs, nozzle@0°, rotate at 100knts with nozzle to 60° 23000-25000lbs, nozzle@0°, rotate at 120knts with nozzle to 60° 25000-30000lbs, nozzle@0°, rotate at 140knts with nozzle to 60° 5sec after takeoff and positive climb reduce throttle to save rpm below 80% thrust. Slowly begin to rotate the nozzles. Keep your AoA betwen +5/-5° Not even close to how the real manual says to do things. Go by what Nealius has put.
Soundwave197 Posted February 2, 2018 Posted February 2, 2018 Not even close to how the real manual says to do things. Go by what Nealius has put. I never had any problem taking off. Its a simple and reliable way without a lot of guessing. But i will try it and post my result. I fly in DCS because i want to have fun and dont listen to a manual like its my job. PC: i7 6700K - GTX980ti - ASUS Z170P D3 - 32GB DDR3 - Samsung 850Evo - 5TB HDD Displays: BenQ RL2455HM - Acer Pred. XB241H - BenQ RL2455HM Controller: Modded TM WH grip on VKB Glad.2PRO, TM WH Trottle, TM MFD`s, Saitek Rudder, 3xArduino Mega+Leonardo for AV8B panels, TIR5,
Flamin_Squirrel Posted February 2, 2018 Posted February 2, 2018 I never had any problem taking off. Its a simple and reliable way without a lot of guessing. But i will try it and post my result. I fly in DCS because i want to have fun and dont listen to a manual like its my job. Of course you should fly the way you want, no offence intended! It's just that some people might like an idea of how to fly properly without reading the manual though, and people's made up procedures can lead to confusion, that's all.
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