Search results for query: sikorsky ds-

Have recently come across some Sikorsky piston-engine helo projects from late 1946 and early 1947: the DS-160, DS-175 and DS-176. The DS-175 was a USN offering; the other two were presumably USAAF proposals.

Hi, https://forum.warthunder.com/index.php?/topic/430532-sikorsky-s-67-blackhawk/

Hi, as I discovered before the Sikorsky DS-507 & DS-509,the S-67 was called DS-508; http://www.scalerchelis.com/phpBB2/viewtopic.php?f=14&t=16114

I believe what he meant by "number" was a Sikorsky model number, like S-43, S-44, etc. The XBLR-3 project never received any of these. In my post, "DS-" does not refer to Douglas El Segundo models, but to Sikorsky design numbers (such as DS-103, DS-160...)!

So weird, I think Sikorsky used two "DS" series in same time,for examples DS-103,DS-109 & DS-137 were appeared in early 1960s up to 1967,but you find DS-508 or S-67 was displayed in late 1960s also,so it is confused ,why ?!. https://apps.dtic.mil/dtic/tr/fulltext/u2/651416.pdf...

sferrrin, you might be thinking of the Sikorsky DS-103 discussed in this topic: http://www.secretprojects.co.uk/forum/index.php/topic,1051.msg8380.html#msg8380 The shaft drive single rotor VHLH helicopter concept is larger than the Sikorsky DS-103. Rotor diameter of the VHLH is 246 ft...

...tail rotor experimental versions here. Sikorsky S-57 (XV-2) single-blade rotor project here. Sikorsky S-60 Skycrane helicopter here. Sikorsky DS-103 missile carrier flying crane here. Sikorsky S-61 prototypes and projects here. Sikorsky S-61D helicopter here. Sikorsky S-61F prototype...

These three side view diagrams by Hans Redemann are unmistakeable in their style.

From Aviation magazine 1974.

Concept model of the Sikorsky DS-160 (DS- for Design Study) early crane helicopter project. Horizontal tail rotor is noteworthy. Factory 3-view drawing came with the model (copies can be obtained from another source -- just search DS-160 on SPF).

Because no one noticed that design,Sikorsky DS-509.

Hi all, for Sikorsky DS-175,I think it was intended to compete Piasecki PV-14 as a utility helicopter to USN,I know Sikorsky submitted also its S-53 or XHJS to same competition, remaining the DS-176 a mystery proposal for which contest,I will search in USAF early tenders ?.

Sikorsky DS-160 utility helicopter models, with and without floats.

Another drawing,from different source ?, https://i.pinimg.com/originals/53/52/00/535200fe5276018ffabc77517bc409be.jpg

That's the series of production generally,please see, https://www.secretprojects.co.uk/search/1390968/?q=sikorsky+ds-&t=post&o=relevance

It was not in "S" series,it was in "DS" sequence,Sikorsky had two DS different series.

The attached photo shows a basic model of Igor Sikorsky's sesqui-rotor layout, which would evolve into the DS-160 crane helicopter study. This model is dated 1948, which suggests the DS-160 was designed that same year at the earliest, not in 1945 as described elsewhere.

We forgot to look at the second drawing,it was Sikorsky DS-509 Model,an attack version of RSRA research aircraft.

The Sikorsky DS-103 design was also very similar to the HLH but probably a bit earlier. It is described as a missile-carrier flying crane.

Neat! Given the early date of the design, it's fairly modern-looking in some respects.