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Search: Posts Made By: IFMU
Showing results 1 to 35 of 41
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Forum: Rotorheads
8th Jul 2022, 03:16
Replies: 488
Views: 210,428
Posted By IFMU

That was all on the VP at the time. He was a...

That was all on the VP at the time. He was a former Lockheed guy. He just wanted the program done. Too bad, because besides the FAI record there was still engineering and flight test work to do.
Forum: Rotorheads
7th Jul 2022, 18:27
Replies: 488
Views: 210,428
Posted By IFMU

The X2 TD was better at 250kts than a UH60 in...

The X2 TD was better at 250kts than a UH60 in cruise. I can't comment on its progeny.
Forum: Rotorheads
1st Aug 2019, 00:05
Replies: 488
Views: 210,428
Posted By IFMU

That doesn't float my boat! I think the Comanche...

That doesn't float my boat! I think the Comanche airframe was pretty good as it was.

Adding a shroud is not free. Performance gains from a shroud are sketchy and that is weight where you don't...
Forum: Rotorheads
31st Jul 2019, 11:48
Replies: 488
Views: 210,428
Posted By IFMU

A shroud is not needed for noise control. They...

A shroud is not needed for noise control. They have a clutch. I can tell you the X2 main rotor is orders of magnitude quieter than any single rotor helicopter that I've heard. I don't believe this...
Forum: Rotorheads
1st May 2019, 17:34
Replies: 488
Views: 210,428
Posted By IFMU

Thank you for the link. The two accidents are...

Thank you for the link. The two accidents are very dissimilar. I found the Raider accident troubling as the flight controls were my job on X2. They should have done a better job in test.

I...
Forum: Rotorheads
19th Oct 2018, 00:45
Replies: 488
Views: 210,428
Posted By IFMU

Show some confidence and post that in the 280...

Show some confidence and post that in the 280 thread!
Forum: Rotorheads
15th Oct 2018, 21:10
Replies: 488
Views: 210,428
Posted By IFMU

A 53E making no sound? That I've never seen! Or...

A 53E making no sound? That I've never seen! Or heard I should say.
When they flew the X2 in Elmira, you cannot say the S76 was closer to the X2 trailer. I was there!
Forum: Rotorheads
5th Oct 2018, 03:44
Replies: 488
Views: 210,428
Posted By IFMU

I've never heard the Raider in person. I've...

I've never heard the Raider in person. I've spent a lot of time with the X2. The first time Kevin pulled pitch it got very quiet in the TM trailer. All of us looked up from our screens to see what...
Forum: Rotorheads
4th Aug 2018, 18:31
Replies: 488
Views: 210,428
Posted By IFMU

Very cool video, thanks!

Very cool video, thanks!
Forum: Rotorheads
24th Jul 2018, 10:48
Replies: 488
Views: 210,428
Posted By IFMU

When I look at the pictures of the S97 on the...

When I look at the pictures of the S97 on the ground, I see that you can do a flared landing. When I was training my instructor drilled it into my head that before touchdown on an auto, skids should...
Forum: Rotorheads
22nd Jun 2018, 10:52
Replies: 488
Views: 210,428
Posted By IFMU

Raider back in flight test: ...

Raider back in flight test:
https://www.verticalmag.com/news/sikorsky-resumes-flight-tests-with-s-97-raider/
Forum: Rotorheads
28th Sep 2017, 13:57
Replies: 488
Views: 210,428
Posted By IFMU

They have a lot of flight controls talent, and...

They have a lot of flight controls talent, and one would have to assume there is some commonality between the systems. They had enough talent they didn't need to keep the X2 guys when they closed...
Forum: Rotorheads
15th Sep 2017, 00:18
Replies: 488
Views: 210,428
Posted By IFMU

I think all the Sikorsky FBW uses a normal...

I think all the Sikorsky FBW uses a normal collective and a unique trim sidearm controller. The RAH66 didn't have pedals but everything else has.

I'd flown in the back of the Shadow a few times...
Forum: Rotorheads
14th Sep 2017, 16:55
Replies: 488
Views: 210,428
Posted By IFMU

Vertical released this: ...

Vertical released this:
https://www.verticalmag.com/news/sikorsky-reveals-details-s-97-raider-hard-landing-ntsb-publishes-initial-report

Ground resonance is not a factor for rigid rotors. Article...
Forum: Rotorheads
19th Aug 2017, 13:04
Replies: 488
Views: 210,428
Posted By IFMU

Sans, I have no idea, but am interested also....

Sans,
I have no idea, but am interested also. Tell us about this iron bird prop incident - did I miss the story somewhere? Did they have a dedicated iron bird?
Forum: Rotorheads
3rd Aug 2017, 14:45
Replies: 488
Views: 210,428
Posted By IFMU

To me it looks like the road that goes to the ILS...

To me it looks like the road that goes to the ILS shack down at the west end of the runway. True that it is not technically a taxiway, so I misspoke. They had a designated area down there for the...
Forum: Rotorheads
3rd Aug 2017, 12:02
Replies: 488
Views: 210,428
Posted By IFMU

Can anybody see signs of the gear? They stick...

Can anybody see signs of the gear? They stick out to the side normally. It almost looks more like the gear failed to extend and they elected to set it down on the taxiway.
Forum: Rotorheads
1st May 2017, 20:37
Replies: 488
Views: 210,428
Posted By IFMU

So, the X2 was a flexbeam rotor?

So, the X2 was a flexbeam rotor?
Forum: Rotorheads
27th Apr 2017, 19:02
Replies: 488
Views: 210,428
Posted By IFMU

I'm with spline on this one. He got it right in...

I'm with spline on this one. He got it right in one.
Forum: Rotorheads
25th Apr 2017, 18:50
Replies: 488
Views: 210,428
Posted By IFMU

I believe that "we need this baby next month, get...

I believe that "we need this baby next month, get 9 women on it" would not fall into under funding or supplier mismanagement​. And, it's not a vote, just another possible cause.
Forum: Rotorheads
25th Apr 2017, 10:59
Replies: 488
Views: 210,428
Posted By IFMU

I'll float an option D. Engineering said "it will...

I'll float an option D. Engineering said "it will take X amount of time." Management said "no it won't."

Just a guess, as I am not part of Sikorsky any longer. Nor do I have any knowledge as to...
Forum: Rotorheads
18th Apr 2017, 22:13
Replies: 488
Views: 210,428
Posted By IFMU

Cool video! I guess sultan's last dig must have...

Cool video! I guess sultan's last dig must have hurt, so they had to post something.
Forum: Rotorheads
18th Apr 2017, 02:05
Replies: 488
Views: 210,428
Posted By IFMU

Nifty marketing video aside, hard to imagine a...

Nifty marketing video aside, hard to imagine a folding rigid rotor. I doubt interference with the fairing would be the biggest technical challenge. With no articulation the loads there are elevated.
Forum: Rotorheads
7th Apr 2017, 02:18
Replies: 488
Views: 210,428
Posted By IFMU

Funny, I thought that was Dave who did the...

Funny, I thought that was Dave who did the structural design. We had many Daves on the program but one was the rotors structural designer. Ashish's aero design was a masterwork.
Forum: Rotorheads
6th Apr 2017, 17:24
Replies: 488
Views: 210,428
Posted By IFMU

Built, yes. Designed, no. They did a nice job on...

Built, yes. Designed, no. They did a nice job on the X2 blades. The decision to send them out did not come from a life long Sikorsky employee!
Forum: Rotorheads
5th Apr 2017, 20:58
Replies: 488
Views: 210,428
Posted By IFMU

I bet if somebody at Sikorsky made a decision to...

I bet if somebody at Sikorsky made a decision to do that they came from another company!
Forum: Rotorheads
27th Oct 2016, 14:11
Replies: 488
Views: 210,428
Posted By IFMU

Excellent, we were due for some news! I'm off to...

Excellent, we were due for some news! I'm off to Udvar-Hazy for the X2 induction, hope to hear more in person.
Forum: Rotorheads
9th Aug 2016, 14:00
Replies: 488
Views: 210,428
Posted By IFMU

CTR, Quietly making progress is not the same as...

CTR,
Quietly making progress is not the same as on hold. I have no idea what they are up to on the Defiant.
Forum: Rotorheads
8th Aug 2016, 20:43
Replies: 488
Views: 210,428
Posted By IFMU

Sultan, As an ex-Sikorsky guy I had also...

Sultan,
As an ex-Sikorsky guy I had also wondered. It has been pretty quiet even from my old X2 buddies. I recently heard they have been quietly making progress. No doubt they are keeping it under...
Forum: Rotorheads
19th Oct 2015, 21:58
Replies: 488
Views: 210,428
Posted By IFMU

http://www.bizjournals.com/dallas/news/2014/04/07/...

http://www.bizjournals.com/dallas/news/2014/04/07/a-look-inside-bell-helicopters-new-corporate.html

Perhaps this is what sultan speaks of. Looks ok to me.
Forum: Rotorheads
19th Oct 2015, 20:06
Replies: 488
Views: 210,428
Posted By IFMU

Did the VS300 and R4 have any impact? Of course...

Did the VS300 and R4 have any impact? Of course not, they were Sikorsky machines, right? I thought it was a great interview and video, thanks for the link!
Forum: Rotorheads
7th Oct 2015, 18:51
Replies: 488
Views: 210,428
Posted By IFMU

I think the artificial date is for execs to get a...

I think the artificial date is for execs to get a bonus. If we could just get back to engineers running these companies then this silliness would go away.
Forum: Rotorheads
6th Oct 2015, 11:34
Replies: 488
Views: 210,428
Posted By IFMU

I think anybody who has really accomplished...

I think anybody who has really accomplished something can look at the accomplishments of others and recognize that they have done something good. I am not a tiltrotor guy, however clearly they have...
Forum: Rotorheads
6th Oct 2015, 02:08
Replies: 488
Views: 210,428
Posted By IFMU

CTR, I am sure you are right on. I am not part...

CTR,
I am sure you are right on. I am not part of the S-97 inner circle, as I left Sikorsky when they closed Schweizer down. But your words ring with truth that I have seen firsthand before.
Bryan...
Forum: Rotorheads
28th May 2015, 18:14
Replies: 488
Views: 210,428
Posted By IFMU

But, it was not a problem on X2. CG was good. ...

But, it was not a problem on X2. CG was good. Though what SpineDrive says is correct, you still need a forward enough CG for stability. This is a basic aircraft fact that is true for both...
Showing results 1 to 35 of 41
 
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