Engine configuration (Eskimo.rse):
<engine-database>
<engine-list>
<engine mfg="Damascus" code="SLU-FAE" Type="Single-Use" dia="120." len="1980."
initWt="23558." propWt="14705." delays="0" auto-calc-mass="1" auto-calc-cg="1"
avgThrust="10950.8" peakThrust="11333.9" throatDia="0." exitDia="0."
Itot="30907.5" burn-time="2.0" massFrac="62.42" Isp="174.33" tDiv="10"
tStep="-1." tFix="1" FDiv="10" FStep="-1." FFix="1" mDiv="10" mStep="-1."
mFix="1" cgDiv="10" cgStep="-1." cgFix="1">
<comments>UMLACA engine
</comments>
<data>
<eng-data t="0." f="0." m="14705." cg="703.5"/>
<eng-data t="0.008" f="9700.4" m="14664.8" cg="703.5"/>
<eng-data t="0.022" f="8952.9" m="14512.2" cg="703.5"/>
<eng-data t="0.042" f="9781.5" m="14269.6" cg="703.5"/>
<eng-data t="0.067" f="10200.8" m="13968.3" cg="703.5"/>
<eng-data t="0.201" f="10500.1" m="12424.3" cg="703.5"/>
<eng-data t="0.56" f="10889.5" m="10031.4" cg="703.5"/>
<eng-data t="0.927" f="11010.6" m="7942.28" cg="703.5"/>
<eng-data t="1.202" f="11130.1" m="5674.738" cg="703.5"/>
<eng-data t="1.5" f="11333.9" m="3444.709" cg="703.5"/>
<eng-data t="1.97" f="10501.94" m="26.552" cg="703.5"/>
<eng-data t="2.00" f="0." m="0." cg="703.5"/>
</data>
</engine>
</engine-list>
</engine-database>
____________
* Eskimo - soviet ice-cream on stick
I believe the UMLACA is always fired upward at high trajectories (over 45 degrees). A flight path with the maximum range would have the shortest flight time.
ОтветитьУдалитьThe Darayya launch has a flight time of 20 seconds. It is very unlikely it is fired at its maximum range. It is almost impossible for any rocket on a high or optimum trajectory to go over 2000 meter in under 20 seconds.
"…over 45 degrees…"
УдалитьOne could argue - if you have multiple targets, you need to vary the angle of launch. But there was only one shot - why poke your nose into the enemy? It can be something unexpected answer. It is better to use the maximum range.
However, I will not argue - the difference is small.
The main thing, I gave the engine configuration file - anyone can play with him. And make sure that the working distance of the SLU-FAE type short range missile approximately 2000 meters.
I love the name Eskimo! It's far better than UMLACA which is a political/propaganda term - the vast majority of known uses are not "Alleged Chemical Attacks".
ОтветитьУдалитьMy observation is that there are probably four variants
- A high explosive model with a longer payload
- An oversized unit "Giant Eskimo"
- A liquid/WP unit with shorter payload and different motor
- The units used in Ghouta - distinct differences in motor nozzle and possibly narrower motor tube.
— …there are probably four variants…
УдалитьThere's so much flying!.. For example Q-tips - http://youtu.be/zAdfjgxxDEM?t=24s
The name for the 122 improv unit may be 'volcano'
ОтветитьУдалитьWe also have accurate flight time, burn time, and range (subject to launch angle)
http://www.liveleak.com/view?i=2aa_1385661490
Can you use your magic wand and work out an approximate launch elevation angle?
ОтветитьУдалитьIt looks to me to be over 30 degrees, but perhaps not over 40 degrees?
What is the range effect for 30, 35, 40, 42 angles?
These are the video timings
Ignition: 1.9 seconds
Flameout: ~~ 5 seconds
Splash: 17.9 seconds.
Explosion sound: 23.5 seconds.
Speed of sound @ 600m : ~337 m/s
My player sound delay < 0.2 seconds (sound after video)
So derived figures.
Burn time: 3 seconds
Flight time: 16 seconds
Splash-to-bang: 5.6 seconds
Calculated distance to impact: 1887m
Average ground speed: 117 m/s