Areo spike


Legendary member
can you scale a areo spike thruster
Yes but it won't work at a scale speed as you can't scale the properties of the air, the speed of sound remains the same due to the air's compress-ability staying the same.
Go for looks and use ducted fans or if your rich a couple of model jet engines.


Master member
Or if your really into doing difficult stuff, there was a hobby thing called a pulse jet that ran off GAS. Can still get never been fired ones on fleabay every so often. There is a reason they have never been run..... kinda like a GHQ engine from the 1940's


Cardboard Boy
Pulse jets are still used quite a lot in rc plane, less complex than jet engines.
As for the aerospike, I guess you know it is a type of still experimental rocket engine and not a jet engine that can be used on aircraft.


Cardboard Boy
Yeah probably, if you have the proper materials and can get the model to mach 3 in order to ignite it.
So far the fastest rc model is an unpowered glider with a speed record of about 850kph so you have a bit of a long way to go.