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No tail rotor, no tail boom, no H-V worries...Pegasus helicopter

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No tail rotor, no tail boom, no H-V worries...Pegasus helicopter

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Old 18th Dec 2013, 18:43
  #41 (permalink)  
 
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Thanks, Shawn, that makes sense.

We used to practice them in the UH-1 from higher than normal hover heights using a small check down on the collective, but that was a canned training exercise where you were pre-primed to do it.
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Old 19th Dec 2013, 00:06
  #42 (permalink)  
 
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So, if this aircraft has no stabilizers how does it handle through the "range" of flight profiles? Do you have to stand up on the pedals in cruise because the nose is pitched forward so much? Does the tail naturally follow the nose during a turn, or slip/skid through a turn? I have more questions but I doubt the manufacturers are on here answering... so I will hold them in for now!
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Old 19th Dec 2013, 06:14
  #43 (permalink)  
 
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2 rockets, travelling around in circles some 300-500 times per minute at nearly the speed of sound. If they fired that thing up in Ireland, they'd probably get noise complaints from France.

That and the fuel economy are the reasons why no tip jet has ever gone further than prototype stage.
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Old 20th Dec 2013, 11:22
  #44 (permalink)  
 
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For NI read ...big grants to take business there, plus top end tax advantages on manufacturing , plus grants for exporting, so I agree with the Back to the Future aka Delorean ?

Shame though for it looked like a good idea in the Video, well controllable also.. from the little shown!
Peter R-B
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Old 20th Dec 2013, 12:02
  #45 (permalink)  
 
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Perpetual mobile vs time machine

It seems that the Northern Ireland business tax exemption authority learned little from DeLorean.

Why did the hand-cranked vacuum-cleaner-powered bicycle never catch on?

It's basically a Harrier with the two cold exhausts spinning round and round. Doesn't sound tremendously fuel efficient.

Clever shaping might reduce the noise to acceptable levels, but good luck with certifying it to deal with a blade-tip bird strike.

There's a good reason that the NOTAR vent is at the end of a boom.
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Old 4th Jan 2014, 14:35
  #46 (permalink)  
 
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Why all the questions on noise - all the reports so far say it is considerably quieter than a conventional rotor.
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Old 4th Jan 2014, 16:01
  #47 (permalink)  
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Rather ominous press release on the News section of their website saying they have pulled out of CREST (whatever that is) and affected shareholders should contact them.

SGC
 
Old 4th Jan 2014, 16:24
  #48 (permalink)  
 
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CREST?

Sounds like a nice way of saying that trading in their shares has been suspended. CREST is an electronic settlement and registration system.

Added: I believe that CREST was also the old name for the European Research Area and Innovation Committee (ERAC), an intergovernmental policy advisory group, whose origin goes back to the Marechal Group.

It also seems to be a UK-based consortium of research groups in small new universities - CREST | Consortium for Research Excellence, Support and Training, as in Old..rrified's acronym.

However, as the Pegasus website notes that withdrawing from CREST might interest their shareholders more than EU science ministers or small universities' research departments, I suspect it's share-related rather than research-related.

Last edited by awblain; 4th Jan 2014 at 19:46. Reason: EU research project?
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Old 4th Jan 2014, 16:48
  #49 (permalink)  
 
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CREST is also a EU funded technology research programme (Consortium for Research Excellence, Support and Training)
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Old 4th Jan 2014, 17:00
  #50 (permalink)  
 
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This company previously talked about setting up production in South Wales with local grant aid. Appears to be their modus operandi.
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Old 4th Jan 2014, 17:28
  #51 (permalink)  
 
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Pegasus ( a non-starter)

I did an evaluation of Pegasus for an investment bank back in 2010. Was an absolute non-starter. The expected levels of finance were woefully short of realism; the data I was presented with was 25 years out of date. The driving forces, technically, would now be around their late 80s And we (all) now have EASA to deal with. I'm afraid that is one very dead duck - VFR
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Old 4th Jan 2014, 20:14
  #52 (permalink)  
 
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South West, Wales, Ireland, where next
Heli1
"This company previously talked about setting up production in South Wales with local grant aid. Appears to be their modus operandi"
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Old 4th Jan 2014, 21:40
  #53 (permalink)  
 
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I'll add this to my book of "Flights of Fancy".
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Old 5th Jan 2014, 21:24
  #54 (permalink)  
 
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Heli 1

Has lasted longer than we thought in 2008
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Old 6th Jan 2014, 19:13
  #55 (permalink)  
 
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A wallet vacume, sucks money from dumb investers, mission completed.
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Old 6th Jan 2014, 19:16
  #56 (permalink)  
 
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Perhaps John Travolta can buy some for the scientologists.
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Old 7th Jan 2014, 00:05
  #57 (permalink)  
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video

looks fun; sounds loud! -

ETL 1.5 - YouTube
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