Thrust data analysis of India's solid rocket motors for PSLV and GSLV
(mathematical analysis based on available data)

Norbert Brügge, Germany

Upload: 19.04.2018

PSLV & GSLV core stage motor S-138



20.21 x 2.80 m


    

    

 
  Thrust SL Isp SL Thrust vac Isp vac Propellant Burn time Flow rate

Total Impulse (MN*s)

MP  kN sec Ns/kg MP kN sec Ns/kg (t) (s) t/s

SL

vac

 S-138 Thrust ave 306.2 3,002.6 237 2324 347.4 3.407.2 269 2638 128.20 107 1.2916 321.2 364.6
Thrust max 435.5 4,270.3 494.2 4,846.9   1.8374

 

 

LVM3 booster motor S-200

 


21.92 x 3.20 m


    

   
 

 
  Thrust SL Isp SL Thrust vac Isp vac Propellant Burn time Flow rate

Total Impulse (MN*s)

MP  kN sec Ns/kg MP kN sec Ns/kg (t) (s) t/s

SL

vac

 S-200 Thrust ave 364.9 3,578.2 227 2226 441.2 4,327.1 274.5 2692 206.74 129 2.2203 460.2 556.5
Thrust max 504.0 4,942.5 609.5 5,976.9   1.6074

 

 

PSLV booster motors
 PSOM (XL)


10.06 x 1.00 (PSOM
~13.46 x 1,00 (PSOM-XL)

 

 


      



    
 

 
  Thrust SL Isp SL Thrust vac Isp vac Propellant Burn time Flow rate

Total Impulse (MN*s)

MP  kN sec Ns/kg MP kN sec Ns/kg (t) (s) t/s

SL

vac

 PSOM Thrust ave 46.4 455.0 229 2246 51.2 502.6 253 2481 8.92 44 0.2026 20.0 22.1
Thrust max 58.6 574.7 64.8 635.0   0.2559
 
 PSOM-XL Thrust ave 57.5 564.0 231 2265 63.5 622.8 255 2501 12.2 49 0.2490 27.6 30.5
Thrust max 65.9 637.2 71.7 703.5   0.2813

 

 

PSLV
(H)PS-3 upper stage motor


3.60 x 2.00

              

 
  Thrust SL Isp SL Thrust vac Isp vac Propellant Burn time Flow rate

Total Impulse (MN*s)

MP  kN sec Ns/kg MP kN sec Ns/kg (t) (s) t/s

-

vac

 HPS-3 Thrust ave - - - - 20.0 196.4 295 2893 7.6 112 0.0679  - 22.0
Thrust max - - 24.4 239.6   0.0828