Unknown heavy jet-tip rotor helicopter

[hesham]

Hi,


I found in this DTIC report,this drawing to a heavy jet-tip rotor helicopter
design,they said 2501 or Z501,what was this ?.


Please note,all aircraft around it are well known.

 

[Stargazer]

Hi,


I found in this DTIC report,this drawing to a heavy jet-tip rotor helicopter
design,they said 2501 or Z501,what was this ?.


Please note,all aircraft around it are well known.

Totally pointless to start a new topic for this. I thought I had made that clear before, hesham.
Future new topics like this one will be locked and removed!

This picture just says 250 t... which means 250 tons.