While as yet it’s unclear just what crashed at Casa Del Osama, chances are it’s a stealthy modification of the Blackhawk. The idea of a radar-stealthy Blackhawk is not a new one. In 1978 Sikorsky released some details of three design studies of Blackhawk fuselages modified for low radar cross section. No details were released about the rotor, but it’s obvious that the rotors and hubs would need a fair amount of work to reduce RCS… perhaps just the sort of modifications visible in the photos.
Note: I have better quality copies of these illustrations elsewhere, but these are what are readily at hand. I’ll add the better ones at a later date if there is interest.
Configuration1: a modification just to the cockpit area.
Configuration2: highly sloped fuselage sides.
Configuration3: sides sloped five degrees
Unsurprisingly, configurations 2 & 3 were found to add noticably to aircraft weight.
8 Responses to “Stealthy Blackhawks”
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It would be fun to know if the tail rotor shown in the photos was primarily for noise reduction or to reduce RCS. The tailfins in the photos look like they at least are for RCS reduction.
NBC Nightly News had video that included kids playing around with the burnt-out wreckage last night, and from that it looks like the thing was made out of a large proportion of composites, whatever it was:
http://www.msnbc.msn.com/id/3032619/vp/42883423#42883423
[…] http://up-ship.com/blog/blog/?p=9714 […]
New photo from Reuters showing the tail assembly from a different angle with two people near it; whatever it is, this is a big helicopter, as the person holding the tip of the horizontal fin shows:
http://www.vancouversun.com/news/4727178.bin?size=620×400
Here’s a defensetech post I across. The first pic compares pretty well with your illustrations.
http://defensetech.org/2011/05/04/what-the-secret-bin-laden-raid-helo-might-look-like/
The top drawing looks pretty reasonable, though I would expect the side windows to not be rectangular to cut down on corner reflections of radar waves, and the material they are made of to be metalized like on the F-117 and B-2 cockpit windows to keep radar from getting into the aircraft’s interior.
Whatever it was painted or plated with is strange, as from some angles the photos make it look like whitish silver, and other angles make it look pretty dark. It’s almost like the reflective surface of a movie screen or road sign.
Apparently, some V-22 Ospreys carry a similar finish:
http://i265.photobucket.com/albums/ii208/etmms/V-22/12877042.jpg
Probably in China as we speak. No NOTAR though?
This looks interesting, particularly when combined with the upturned exhaust system that SIkorsky is now shipping on UH-60Ms and HH-60Ms. It does a nice job of hiding the exhausts from grounds observation without some of the complications and weight of infrared suppression systems.
شركة تخزين عفش بالرياض
شركة ترميمات بالرياض
شركة دهانات بالرياض
شركات تنظيف المنازل بجدة
شركة كشف تسربات المياة بجدة
شركة مكافحة حشرات في جدة
شركة تنظيف خزانات بجدة
شركات نقل عفش جدة
شركات تنظيف منازل بجدة
شركات رش المبيدات حشرية بجدة
عزل بالرياض
عزل اسطح
الرياض
عزل خزانات
الرياض
تنظيف خزانات
بالرياض
تصغير المعدة
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تدبيس المعدة
جراح المرارة بالمنظار
شركات مكافحة
القوارض بالرياض
شركة مكافحة حشرات بالرياض
شركة رش مبيد بالرياض
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شركة تنظيف بيارات بالرياض
شركة تخزين عفش بالمدينة المنورة
نقل عفش بالمدينة المنورة
غسيل خزانات بالمدينة المنورة
نقل عفش جدة
شركات مكافحة الحشرات في جدة
شركة تنظيف بجدة
شركات رش المبيدات الحشرية بجدة
شركة مكافحة حشرات بالدمام
شركات تنظيف المنازل بالدمام
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شركة المنارة لنقل العفشبالرياض
نقل أثاث
بالرياض
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