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Is it possible to create different colors in rocket exhaust?


Are rocket exhaust flames ever opaque?What does the exhaust plume of a rocket look like in vacuum?What is the electromagnetic spectrum profile of rocket flame/exhaust?Why is (conventional) ramjet not used for 2nd stage of rocket propulsion?What is the 'Summerfield criterion' regarding rocket exhaust expansionOrbital ATK’s Cygnus 2nd stage exhaust plumeTemperature and pressure of rocket exhaustExhaust plume length variation across different rocket typesWhy does the exhaust plume apprear to be throbbing?What is the difference between “Air-augmented rocket propulsion” and “integral rocket-ramjet propulsion”?













2












$begingroup$


Would it be feasible in any rocket engine (liquid or solid) intended for flight above the atmosphere to add one of the following elements: barium, lithium, sodium, copper, or calcium to create different colors in the exhaust plume, or would those elements render all engines not flight worthy?










share|improve this question











$endgroup$
















    2












    $begingroup$


    Would it be feasible in any rocket engine (liquid or solid) intended for flight above the atmosphere to add one of the following elements: barium, lithium, sodium, copper, or calcium to create different colors in the exhaust plume, or would those elements render all engines not flight worthy?










    share|improve this question











    $endgroup$














      2












      2








      2





      $begingroup$


      Would it be feasible in any rocket engine (liquid or solid) intended for flight above the atmosphere to add one of the following elements: barium, lithium, sodium, copper, or calcium to create different colors in the exhaust plume, or would those elements render all engines not flight worthy?










      share|improve this question











      $endgroup$




      Would it be feasible in any rocket engine (liquid or solid) intended for flight above the atmosphere to add one of the following elements: barium, lithium, sodium, copper, or calcium to create different colors in the exhaust plume, or would those elements render all engines not flight worthy?







      rockets exhaust






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 2 hours ago







      Bob516

















      asked 3 hours ago









      Bob516Bob516

      2,0951423




      2,0951423




















          1 Answer
          1






          active

          oldest

          votes


















          3












          $begingroup$

          Sure, it's entirely possible. Not unusual in model rocketry (where style points can count for something), for example:



          Image of various colored model rockets.






          share|improve this answer









          $endgroup$












          • $begingroup$
            I realize I left out one very important detail in my question. Rocket engines for travel outside of the Earth's atmosphere.
            $endgroup$
            – Bob516
            2 hours ago






          • 1




            $begingroup$
            @Bob516 Doesn't really matter. Putting certain chemicals in the fuel/oxidizer can generate a colored flame. Rockets going outside the atmosphere are typically more concerned with performance than looking pretty, though.
            $endgroup$
            – ceejayoz
            2 hours ago







          • 2




            $begingroup$
            In the old Lester Del Rey book "Rocket Jockey" about racing spaceships, they add chemicals to the exhaust so the spectators can differentiate the vessels.
            $endgroup$
            – Organic Marble
            1 hour ago






          • 1




            $begingroup$
            @Bob516, if you inject the colorant into the exhaust plume after the nozzle, I doubt it would have a performance impact beyond the increased mass.
            $endgroup$
            – Mark
            34 mins ago






          • 1




            $begingroup$
            @Mark That mass (& assoc. hardware) could be rather significant, depending on how visible the trail needs to be.
            $endgroup$
            – Aza
            31 mins ago












          Your Answer








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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          3












          $begingroup$

          Sure, it's entirely possible. Not unusual in model rocketry (where style points can count for something), for example:



          Image of various colored model rockets.






          share|improve this answer









          $endgroup$












          • $begingroup$
            I realize I left out one very important detail in my question. Rocket engines for travel outside of the Earth's atmosphere.
            $endgroup$
            – Bob516
            2 hours ago






          • 1




            $begingroup$
            @Bob516 Doesn't really matter. Putting certain chemicals in the fuel/oxidizer can generate a colored flame. Rockets going outside the atmosphere are typically more concerned with performance than looking pretty, though.
            $endgroup$
            – ceejayoz
            2 hours ago







          • 2




            $begingroup$
            In the old Lester Del Rey book "Rocket Jockey" about racing spaceships, they add chemicals to the exhaust so the spectators can differentiate the vessels.
            $endgroup$
            – Organic Marble
            1 hour ago






          • 1




            $begingroup$
            @Bob516, if you inject the colorant into the exhaust plume after the nozzle, I doubt it would have a performance impact beyond the increased mass.
            $endgroup$
            – Mark
            34 mins ago






          • 1




            $begingroup$
            @Mark That mass (& assoc. hardware) could be rather significant, depending on how visible the trail needs to be.
            $endgroup$
            – Aza
            31 mins ago
















          3












          $begingroup$

          Sure, it's entirely possible. Not unusual in model rocketry (where style points can count for something), for example:



          Image of various colored model rockets.






          share|improve this answer









          $endgroup$












          • $begingroup$
            I realize I left out one very important detail in my question. Rocket engines for travel outside of the Earth's atmosphere.
            $endgroup$
            – Bob516
            2 hours ago






          • 1




            $begingroup$
            @Bob516 Doesn't really matter. Putting certain chemicals in the fuel/oxidizer can generate a colored flame. Rockets going outside the atmosphere are typically more concerned with performance than looking pretty, though.
            $endgroup$
            – ceejayoz
            2 hours ago







          • 2




            $begingroup$
            In the old Lester Del Rey book "Rocket Jockey" about racing spaceships, they add chemicals to the exhaust so the spectators can differentiate the vessels.
            $endgroup$
            – Organic Marble
            1 hour ago






          • 1




            $begingroup$
            @Bob516, if you inject the colorant into the exhaust plume after the nozzle, I doubt it would have a performance impact beyond the increased mass.
            $endgroup$
            – Mark
            34 mins ago






          • 1




            $begingroup$
            @Mark That mass (& assoc. hardware) could be rather significant, depending on how visible the trail needs to be.
            $endgroup$
            – Aza
            31 mins ago














          3












          3








          3





          $begingroup$

          Sure, it's entirely possible. Not unusual in model rocketry (where style points can count for something), for example:



          Image of various colored model rockets.






          share|improve this answer









          $endgroup$



          Sure, it's entirely possible. Not unusual in model rocketry (where style points can count for something), for example:



          Image of various colored model rockets.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 2 hours ago









          ceejayozceejayoz

          21116




          21116











          • $begingroup$
            I realize I left out one very important detail in my question. Rocket engines for travel outside of the Earth's atmosphere.
            $endgroup$
            – Bob516
            2 hours ago






          • 1




            $begingroup$
            @Bob516 Doesn't really matter. Putting certain chemicals in the fuel/oxidizer can generate a colored flame. Rockets going outside the atmosphere are typically more concerned with performance than looking pretty, though.
            $endgroup$
            – ceejayoz
            2 hours ago







          • 2




            $begingroup$
            In the old Lester Del Rey book "Rocket Jockey" about racing spaceships, they add chemicals to the exhaust so the spectators can differentiate the vessels.
            $endgroup$
            – Organic Marble
            1 hour ago






          • 1




            $begingroup$
            @Bob516, if you inject the colorant into the exhaust plume after the nozzle, I doubt it would have a performance impact beyond the increased mass.
            $endgroup$
            – Mark
            34 mins ago






          • 1




            $begingroup$
            @Mark That mass (& assoc. hardware) could be rather significant, depending on how visible the trail needs to be.
            $endgroup$
            – Aza
            31 mins ago

















          • $begingroup$
            I realize I left out one very important detail in my question. Rocket engines for travel outside of the Earth's atmosphere.
            $endgroup$
            – Bob516
            2 hours ago






          • 1




            $begingroup$
            @Bob516 Doesn't really matter. Putting certain chemicals in the fuel/oxidizer can generate a colored flame. Rockets going outside the atmosphere are typically more concerned with performance than looking pretty, though.
            $endgroup$
            – ceejayoz
            2 hours ago







          • 2




            $begingroup$
            In the old Lester Del Rey book "Rocket Jockey" about racing spaceships, they add chemicals to the exhaust so the spectators can differentiate the vessels.
            $endgroup$
            – Organic Marble
            1 hour ago






          • 1




            $begingroup$
            @Bob516, if you inject the colorant into the exhaust plume after the nozzle, I doubt it would have a performance impact beyond the increased mass.
            $endgroup$
            – Mark
            34 mins ago






          • 1




            $begingroup$
            @Mark That mass (& assoc. hardware) could be rather significant, depending on how visible the trail needs to be.
            $endgroup$
            – Aza
            31 mins ago
















          $begingroup$
          I realize I left out one very important detail in my question. Rocket engines for travel outside of the Earth's atmosphere.
          $endgroup$
          – Bob516
          2 hours ago




          $begingroup$
          I realize I left out one very important detail in my question. Rocket engines for travel outside of the Earth's atmosphere.
          $endgroup$
          – Bob516
          2 hours ago




          1




          1




          $begingroup$
          @Bob516 Doesn't really matter. Putting certain chemicals in the fuel/oxidizer can generate a colored flame. Rockets going outside the atmosphere are typically more concerned with performance than looking pretty, though.
          $endgroup$
          – ceejayoz
          2 hours ago





          $begingroup$
          @Bob516 Doesn't really matter. Putting certain chemicals in the fuel/oxidizer can generate a colored flame. Rockets going outside the atmosphere are typically more concerned with performance than looking pretty, though.
          $endgroup$
          – ceejayoz
          2 hours ago





          2




          2




          $begingroup$
          In the old Lester Del Rey book "Rocket Jockey" about racing spaceships, they add chemicals to the exhaust so the spectators can differentiate the vessels.
          $endgroup$
          – Organic Marble
          1 hour ago




          $begingroup$
          In the old Lester Del Rey book "Rocket Jockey" about racing spaceships, they add chemicals to the exhaust so the spectators can differentiate the vessels.
          $endgroup$
          – Organic Marble
          1 hour ago




          1




          1




          $begingroup$
          @Bob516, if you inject the colorant into the exhaust plume after the nozzle, I doubt it would have a performance impact beyond the increased mass.
          $endgroup$
          – Mark
          34 mins ago




          $begingroup$
          @Bob516, if you inject the colorant into the exhaust plume after the nozzle, I doubt it would have a performance impact beyond the increased mass.
          $endgroup$
          – Mark
          34 mins ago




          1




          1




          $begingroup$
          @Mark That mass (& assoc. hardware) could be rather significant, depending on how visible the trail needs to be.
          $endgroup$
          – Aza
          31 mins ago





          $begingroup$
          @Mark That mass (& assoc. hardware) could be rather significant, depending on how visible the trail needs to be.
          $endgroup$
          – Aza
          31 mins ago


















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