SEVERELY DECREASED Missile Performance as of late - Page 5 - ED Forums
 


Notices

Reply
 
Thread Tools Display Modes
Old 11-07-2018, 12:21 PM   #41
P61
Member
 
P61's Avatar
 
Join Date: Feb 2014
Location: Moscow
Posts: 273
Send a message via ICQ to P61
Default

Quote:
Originally Posted by Mortisrose View Post
The chart I posted was from 2018. The thin red and purple lines are showing kinetic energy (I suppose in kilojoules) with GAR-8 reaching 24969, R-3S at 15892. I have several old Tacview files from 2016 multiplayer sessions I could show graphs from.
Well I guess it could be useful if you will upload one tacview from 2016 and one from 2018, where those missiles are being launched, preferrably at the same altitudes in both tacviews, from 16 and 18. At least just for some reference.
__________________
AKA LazzySeal
P61 is offline   Reply With Quote
Old 11-07-2018, 05:03 PM   #42
Mortisrose
Junior Member
 
Join Date: Nov 2016
Posts: 55
Default

From a multiplayer environment in 2016
Attached Thumbnails
Click image for larger version

Name:	Screenshot (16).png
Views:	600
Size:	648.2 KB
ID:	197317  
Mortisrose is offline   Reply With Quote
Old 11-08-2018, 08:55 PM   #43
Mortisrose
Junior Member
 
Join Date: Nov 2016
Posts: 55
Default

A link to my Tacview files from 2016-01-10 to 2017-06-12

https://drive.google.com/drive/folde...2g?usp=sharing

Tacview20160812 is when I first noticed a change in missiles.
Mortisrose is offline   Reply With Quote
Old 11-21-2018, 06:52 PM   #44
Mortisrose
Junior Member
 
Join Date: Nov 2016
Posts: 55
Default

Also I've noticed the Motor of the R-3S runs for about 6 seconds before burning out. Acceleration is slower when compared to GAR-8 with the GAR-8's motor burning out in about 3 seconds or less and accelerating faster. This can be seen in the graph I posted in post #4.

According to the document (if I'm reading it correctly translated) from 2005 linked in Hiromachi's post #21 the R-3S motor should run for 1.7 - 3.3 seconds depending on charge temperature as per section 1.4.2., 2.4.1, and shown in 2.4.2

1.4.2 page 6:
"...depending on the temperature of the charge, works for 1.7 - 3.3 s."

2.4.1 page 34:
Engine running time:

at charge temperature + 60С ... 1.7s
at a charge temperature of –54 ° C ... 3.2 s

Section 2.4.2 on page 37 shows a graph to support this: Fig. 33.
Mortisrose is offline   Reply With Quote
Old 11-21-2018, 10:49 PM   #45
Auditor
Member
 
Auditor's Avatar
 
Join Date: Feb 2018
Posts: 149
Default

Thank you so much Mortisrose. I haven't had time recently to do this and I really appreciate your analysis.
Auditor is offline   Reply With Quote
Old 11-28-2018, 07:06 PM   #46
Mortisrose
Junior Member
 
Join Date: Nov 2016
Posts: 55
Default

Report I made concerning the R-3S:
Also posted in Leatherneck Bugtracker


Tacview files to go with report here: https://drive.google.com/drive/folde...V0LIM1I-p5AxmR


Correction: *Aim-9B at 5km was launched at M 1.3, target M 1.0*
Attached Files
File Type: pdf R-3S Performance.pdf (5.13 MB, 21 views)

Last edited by Mortisrose; 11-28-2018 at 10:21 PM. Reason: added link, correction
Mortisrose is offline   Reply With Quote
Old 11-28-2018, 09:42 PM   #47
P61
Member
 
P61's Avatar
 
Join Date: Feb 2014
Location: Moscow
Posts: 273
Send a message via ICQ to P61
Default

Quote:
Originally Posted by Mortisrose View Post
Report I made concerning the R-3S:
Also posted in Leatherneck Bugtracker


Tacview files to go with report here: https://drive.google.com/drive/folde...V0LIM1I-p5AxmR
Thanks for putting that together, I hope I will read it soon. I'm happy book I found about R-3S helped. I didn't see same material for R-13M though but it can be kinda added somehow above R-3S performance.
__________________
AKA LazzySeal
P61 is offline   Reply With Quote
Old 11-28-2018, 09:46 PM   #48
P61
Member
 
P61's Avatar
 
Join Date: Feb 2014
Location: Moscow
Posts: 273
Send a message via ICQ to P61
Default

Quote:
Originally Posted by Mortisrose View Post
Report I made concerning the R-3S:
Also posted in Leatherneck Bugtracker


Tacview files to go with report here: https://drive.google.com/drive/folde...V0LIM1I-p5AxmR
At a glance though looks like your first test showing us that R-3S is overperforming a bit in DCS on higher altitudes:

__________________
AKA LazzySeal
P61 is offline   Reply With Quote
Old 11-30-2018, 08:05 AM   #49
Jonne
Junior Member
 
Join Date: Sep 2015
Posts: 87
Default

And underperforming at low altitude by roughly 20%.
__________________
Jonne is offline   Reply With Quote
Old 11-30-2018, 03:27 PM   #50
Mortisrose
Junior Member
 
Join Date: Nov 2016
Posts: 55
Default

Yes, max range under-performance at low altitudes, over-performance at higher altitudes.

R-3S and Aim-9B at 5 km, Mach 1.3 launch speed:

R-3S: Max speed: M 2.4 in 7 sec.; Range: 3.4 km; M 1.1 over launch speed; At +20 sec. flight: M 0.8; M 1.6 speed reduction from top speed, Detonation time: 22 sec.

Aim-9B: Max speed: M 2.8 in 3 sec.; Range: 3.4 km; M 1.5 over launch speed; At +20sec. flight: M 0.8, M 2.0 speed reduction from top speed; Detonation time: 25 sec.

Whats interesting is both missiles after 20 seconds of flight are traveling at almost the same speed and reached same range even though the Aim-9B reached M 0.4 higher speed in less than half the time. At +20 seconds Aim-9B is dropping at 2.2 deg/s out of the sky, R-3S is still flying straight ahead. It appears the Sidewinder has more drag, about 22% if taken the difference between speed reduction of M 2 and 1.6 from top speed. Both missiles should have near the same weight, 165 lb (74.8 kg) Aim-9B and 75.3 kg R-3S.

Here are both missiles at +20 after launch:
Attached Thumbnails
Click image for larger version

Name:	Screenshot (70).jpg
Views:	250
Size:	288.6 KB
ID:	198997  
__________________
i7 7700k, 32 GB RAM, 970, 500 GB m.2 SSD, Trackir 3 Pro, Gunfighter Mk I, Mod. TM Cougar throttle and CH Pro Pedals
Mortisrose is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 08:29 PM. vBulletin Skin by ForumMonkeys. Powered by vBulletin®.
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.