Tempest II
PDF THINK TANK: ANALYST
- Joined
- Mar 15, 2007
- Messages
- 1,414
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View attachment 121140
Here is my post from July 2010 quoting the same 1:1.1.
Damn,are we expecting a video of cm-400akg firing by JFT?
link plz ....
1(thrust)/1.1(weight)=~0.91
For normal takeoff weight of JFT (9100kg) that comes around ~8300kg thrust which fits perfectly with RD93 spec...
If RD93ma is put into it then the two will increase to more than 1 provided that normal takeoff weight does not increase to more than 9300kg.
View attachment 137352
22000 lb of thrust (equivalent to ~ 98 KN)figure is clearly written in the article,
so as you have calculated thrust:weight ratio => 9800 (thrust) / 9100 (weight) = 1.0769 ~ 1.1
In the same article, it is mentioned that block II will carry 3000lbs more payload than block I through strengthening wing roots.The RD93 thrust part is pure speculation on the writer's part and not a direct quote from Wg Cdr Ronald.
Plus, it's thrust to weight ratio not weight to thrust ratio, meaning
1:1.1 = 1/1.1 = ~8300/9100 = ~0.91
The RD93 thrust part is pure speculation on the writer's part and not a direct quote from Wg Cdr Ronald.
Plus, it's thrust to weight ratio not weight to thrust ratio, meaning
1:1.1 = 1/1.1 = ~8300/9100 = ~0.91
bhai jaan weight as '1.1' does not make sense by any far fetched way, can you explain weight = 1.1 of what .... ???
secondly how would you account additional weight of 3000 lb (1360.7771 or ~1361 Kg) in this calculation as the weight will be around 10461 Kg
> 1361 (additional weight)+ 9100 (current max take off weight) = 10461 Kg
so as per the supposed "8300 Kg thrust" the TWR would be (8300/10461 = 0.7934) ~ 0.8 which is not possible to be accepted by anyone for the 2nd block of a 4th generation Multirole Fighter Jet
now calculate again with additional weight of 1361 Kg and 9800 Kg thrust figures for block-II:
TWR = (9800 /10461 ) = 0.9368 again its not the ideal '1 or above 1' figure but a respectable figure for a LIGHT WEIGHT FIGHTER with respectable amount of WEAPON WEIGHT on it.
so it is safe to 'assume' that the 'current block-I' of JF-17 is enjoying the 1.1 TWR, but this value will come down to 0.93 TWR due to the additional weight in block-II.
In the end I would say that anyone of us could be right or wrong in his analysis /calculations so wait for the future to be unfold.
Link from where you copied the picture ?