I thought there were more examples of hybrid engines? https://en.wikipedia.org/wiki/RocketMotorTwo https://en.wikipedia.org/wiki/RocketMotorTwo Also, I wonder

I thought there were more examples of hybrid engines? https://en.wikipedia.org/wiki/RocketMotorTwo https://en.wikipedia.org/wiki/RocketMotorTwo Also, I wonder how complex this is going to make the aerodynamic controls. You are losing moment arms between engine and the forward surfaces, if they exist.