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-   -   No tail rotor, no tail boom, no H-V worries...Pegasus helicopter (https://www.pprune.org/rotorheads/331370-no-tail-rotor-no-tail-boom-no-h-v-worries-pegasus-helicopter.html)

Arm out the window 18th Dec 2013 18:43

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.

army_av8r 19th Dec 2013 00:06

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!

lelebebbel 19th Dec 2013 06:14

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.

Peter-RB 20th Dec 2013 11:22

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 ? :suspect:

Shame though for it looked like a good idea in the Video, well controllable also.. from the little shown!
Peter R-B
Lancashire

awblain 20th Dec 2013 12:02

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.

Canburne 4th Jan 2014 14:35

Why all the questions on noise - all the reports so far say it is considerably quieter than a conventional rotor.

Sir George Cayley 4th Jan 2014 16:01

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

awblain 4th Jan 2014 16:24

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.

Old and Horrified 4th Jan 2014 16:48

CREST is also a EU funded technology research programme (Consortium for Research Excellence, Support and Training)

heli1 4th Jan 2014 17:00

This company previously talked about setting up production in South Wales with local grant aid. Appears to be their modus operandi.

vfr440 4th Jan 2014 17:28

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.http://images.ibsrv.net/ibsrv/res/sr...milies/eek.gif The driving forces, technically, would now be around their late 80s http://images.ibsrv.net/ibsrv/res/sr...y_dog_eyes.gif And we (all) now have EASA to deal with.:ugh: I'm afraid that is one very dead duck - VFR

500e 4th Jan 2014 20:14

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"

Shawn Coyle 4th Jan 2014 21:40

I'll add this to my book of "Flights of Fancy".

500e 5th Jan 2014 21:24

Heli 1

Has lasted longer than we thought in 2008 :sad:

hillberg 6th Jan 2014 19:13

A wallet vacume:rolleyes:, sucks money from dumb investers,:= mission completed.:D

awblain 6th Jan 2014 19:16

Perhaps John Travolta can buy some for the scientologists.

JDJ 7th Jan 2014 00:05

video
 
looks fun; sounds loud! -

ETL 1.5 - YouTube


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