To be fair, speed is relative. Imagine a plane flies at 500 km/h and is pursued by another plane at the same speed. If the first plane fires a rocket backwards that accelerates for a total of 200 km/h, then for an observer on the ground the rocket will still do 300 km/h, in the same direction as the planes. However, the guys in the second plane will see a rocket approaching them at 200 km/h.
Wind resistance, aerodynamics, etc. will have an impact, but it can work.
Sure, but the relevant speed up there is relative to the air around you. The missile will have a negative air speed at first, than accelerate to positive, briefly passing through 0 in between, which comes with weird consequences for lift and steering.
The missile would have to cancel out the speed of the plane before achieving any meaningful acceleration.
To be fair, speed is relative. Imagine a plane flies at 500 km/h and is pursued by another plane at the same speed. If the first plane fires a rocket backwards that accelerates for a total of 200 km/h, then for an observer on the ground the rocket will still do 300 km/h, in the same direction as the planes. However, the guys in the second plane will see a rocket approaching them at 200 km/h.
Wind resistance, aerodynamics, etc. will have an impact, but it can work.
Sure, but the relevant speed up there is relative to the air around you. The missile will have a negative air speed at first, than accelerate to positive, briefly passing through 0 in between, which comes with weird consequences for lift and steering.
The zero doesn’t matter all that much, but I think going negative 1000kph is probably a great way to get it into an uncontrolled tumble.
Thrust vectoring though
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Which would be meaningless. Those missile accelerate to like Mach 4 in a second.
A plane going forward at Mach 2 would add .5 second to a missile fired backwards to get to Mach 4.