One of the factors in engine speed is temperature, and here Michael A. Carvajal '09 holds his hands to keep the heat in close to three running engines — all getting a boost from an extra burner in the center. Eric D. Schmiedl—The Tech May. 8, 2016 Facebook Twitter Reddit Print One of the factors in engine speed is temperature, and here Michael A. Carvajal '09 holds his hands to keep the heat in close to three running engines — all getting a boost from an extra burner in the center. Eric D. Schmiedl—The Tech