What? What's wrong with that wing?
I was super impressed with it, It's literally the only glide bomb with foldable dihedral wings that I know of.
It's not optimised.
In case of designs like these there are so many constraints like wings should fold, be short, decrease flutter so it becomes absolute necessary to optimise each and every bit of the design. American JSOW use lift generated from body to aid the wings.
There is only (common) one way to increase the lift form a wing; increase its area. Which can be done by either lengthening it or widening it.
Now coming to what's wrong
- the wings have way less area than the weight of the projectile demands; this is the reason why it bends upwards. It's not intentionally made dihedral; it's just struggling to hold the weight.
- the wings are not stiff enough; bombs like Spice 1000 also use long thin wings but you won't find this curvature on them. So in case of sudden maneuver the wing can snap.
- the effective lift gets reduced. Let's assume a wing generate 10kg of lift and doesn't bend.
In this case when you'll resolve that force into its components then the vertical component will have 10kg of force and horizontal will have 0kg of force.
Now you bend that wing.
Now upon resolving the force gets divided into say 8kg as vertical component and 2kg as horizontal. But this horizontal component of force is doing nothing except cancelling each other from each wing. So the effective lift now becomes just 8kg.
- commercial aircrafts also suffer from bending of wings but to counter this they already have a longer and tapered wing. So even after wasting some amount of lift it has sufficient to fly.
Eh, just give actual answer instea of taunting na.
Ab khush Chacha!?
I was also thinking to give a technical answer but don't know why this line "The scientists at DRDO definitely know more than you and me, let them take care of the bomb's aerodynamics and structural rigidity." felt bit too weird to answer in that way.
Just imagine one fine day Prasad Bansod coming up with an idea to make a sub-machine gun based on Glock. And the very next day ditching it thinking if DRDO has not yet developed something like this then it must be a dumb idea.
Would we had got the opportunity to praise ASMI?