Thanks Old Rookie, for posting the AMA Safety Regs on operating RC pulse jets. This is a Safety Code requirement for AMA members in the USA. This reg was established in 2002 as an alternate for pilots wishing to fly RC jets but not be certified for a turbine waiver. With the advent of the HK pulse jet there is renewed activity in the RC pulse jet area. I personally feel that the current reg, AMA Doc # 510Q, should be updated and trust that the jet community can provide some realistic inputs to this process. The prerequisite requirement of 50 flights with an RC model capable of 150 MPH should be lowered to 100 MPH-the same as for turbine jets. The intent of this requirement is to demonstrate proficiency with a high performance model. The term "capable" should also be revised to state that the model must be flown at this speed or greater. Just about any high performance model can be underpowered and flown at a far lower speed than what is advertised. This does not meet the intent of the speed requirement. Another option to consider are wheel brakes. if the pulse jet model is intended to takeoff and land on landing gear. Finally, a RC failsafe system should be required to shut off the pulse jet in case of a loss of signal or other out-of-control situation. Note that there is no ECU with a pulse jet but most modern RC systems can be programmed for a failsafe engine shutoff situation. These are my suggestions and I look forward to any discussion or comments. Keep in mind that the AMA Safety Code and Regulations are driven by insurance liability requirements and probably soon, FAA requirements.
Rgds,
Art ARRO