lecture_19

lecture_19 - 16.512, Rocket Propulsion Prof. Manuel...

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16.512, Rocket Propulsion Prof. Manuel Martinez-Sanchez Lecture 19: Liquid Propellants Propellant Selection Read Sutton, Ch. 7 Fuels Hydrazine LH MMH RP-1 UDMH N 2 H 4 H 2 N 2 H 3 -CH 3 CH 1.97 N 2 H 2 -(CH 3 ) 2 m.p. (K) 274.5 14.0 220.7 225 216 b.p. (K) 386.7 20.4 360.6 460-540 336 Sp. ht Kcal Kg K ⎜⎟ ⎝⎠ 0.80 1.75 0.7 0.45 0.65 ρ (g/cm 3 ) 1.0 0.071 0.86 0.6-0.8 0.6-0.8 0 f [email protected] (Kcal/mol) +12.0 ( ) -2.4 (@20K) +12 .7 ( ) -5.9 ( ) +12.7 ( ) Unstable Cryogenic Unstable Unstable Oxidizers NA NTO LOX Nitric Acid Nitrogen Tetroxide Liquid Oxygen Hydrogen Peroxide HNO 3 N 2 O 4 O 2 H 2 O 2 m.p. (K) 231.6 261.7 54.4 272.8 b.p. (K) 355.7 294.3 90.0 423.5 Sp. ht Kcal Kg K 0.4-0.16 0.37 0.4 (g/cm 3 ) 1.5 1.37 1.1-1.2 1.46 0 f (Kcal/mol) -41.4 0 15.7 Kcal 3.8 4.18 mol ± (@90K) -44.8 ( ) Corrosive Toxic Reactive, Cyrogenic Unstable 16.512, Rocket Propulsion Lecture 19 Prof. Manuel Martinez-Sanchez Page 1 of 3
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Desirable : Low m.p., high ρ , c, b.p. (for high H in cooling) Stability (negative
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This note was uploaded on 11/07/2011 for the course AERO 16.512 taught by Professor Manuelmartinez-sanchez during the Fall '05 term at MIT.

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lecture_19 - 16.512, Rocket Propulsion Prof. Manuel...

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