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Author Topic: Aerion SBJ  (Read 33435 times)

Offline TinWing

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Aerion SBJ
« on: January 10, 2006, 10:56:24 am »
Unlike most SSBJ (Supersonic Business Jet) proposals this one is based around an existing powerplant, the Pratt & Whitney JT8D.

You might ask:  "Why would a SSBJ concept use the same engine as the out of production McDonnell-Douglas MD-80 series?"

Simply put, the JT8D-200 series was the very last of the low bypass ratio civilian turbofans.  To put the matter of bypass ratio in perspective, the JT8D-219 has a bypass ratio of 1.74:1 and the GE F101-100 in the B-1B Lancer has a 2.01:1 ratio, something of a record for a combat aircraft. 

Modern civilian turbofans typically have a bypass ratio of in the neighborhood 6:1 - a simple fact which made the performance goals stillborn Boeing Sonic Cruiser seem all the more improbable. 

Sources:
http://www.aerioncorp.com
http://www.flug-revue.rotor.com/FRTypen/FRAerion.htm

Offline Sentinel Chicken

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Re: Aerion SBJ
« Reply #1 on: January 25, 2006, 01:08:09 pm »
There has been a change in the configuration from a recent AWST article- the T-tail is now gone and it's a more conventional appearing cruciform tail arrangement. There's also been a reprofiling of the nose to address visibility concerns aired by the FAA, but it's not as apparent as the tail redesign.

Offline TinWing

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Re: Aerion SBJ
« Reply #2 on: January 26, 2006, 05:34:25 pm »
« Last Edit: January 26, 2006, 05:40:35 pm by TinWing »

Offline CammNut

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Re: Aerion SBJ
« Reply #3 on: March 17, 2007, 08:48:44 pm »
And while I am at it - here is the latest Aerion image. This SSBJ is not a low-boom design. Instead it would slow down to subsonic speed over land to avoid creating a sonic boom. Because it uses supersonic natural laminar flow (hence the unswept, and very thin, wing and tail), supersonic and subsonic drag are about the same, its designers claim. This is unlike conventional supersonic designs, which suffer from high subsonic drag because of the slender, highly swept wing needed for low supersonic drag.

To show how designs evelove as they become more defined and refined, I've attached an image of the original ASSET concept by Reno Aeronautical, the company the holds the patent on the supersonic laminar flow aerodynamics behind the Aerion. Sorry it's so small.

Offline fightingirish

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Re: Aerion SBJ
« Reply #4 on: March 19, 2007, 03:43:22 am »
Quiet Supersonic Transport (QSST) designed by the Skunk Works for Supersonic Aerospace International (SAI
http://www.saiqsst.com/
Nice site!

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Offline CammNut

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Re: Aerion SBJ
« Reply #5 on: June 08, 2007, 12:47:30 pm »
Just rediscovered these missing links in the Reno-to-ASSET-to-Aerion SSBJ design evolution. The V-tail one comes before the Reno T-tail one above, while the T-tail one comes before the current low-tail Aerion design. The entire T tail - vertical and horizontal - was hinged at its base for trimming.

Offline CammNut

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Re: Aerion SBJ
« Reply #6 on: July 02, 2007, 09:46:06 am »
Couple of the latest Aerion pics - no reason, just 'cos I have them...

Offline Triton

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Re: Aerion SBJ
« Reply #7 on: January 28, 2010, 02:21:25 pm »
Artist's impression of Aerion supersonic business jet (top).

Three-view drawing of Aerion supersonic business jet (bottom)

Source: Moore, S. Clayton. "Aerion and SAI Compete For Supersonic Supremacy" Airport Journals January 2005.
http://www.airportjournals.com/Display.cfm?varID=0501014&PrintPage=True

Offline Triton

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Re: Aerion SBJ
« Reply #8 on: January 28, 2010, 07:12:38 pm »

Offline fightingirish

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Re: Aerion SBJ
« Reply #9 on: January 24, 2011, 11:40:02 am »

Quote
Aero-News Network: Does BizAv STILL Have An SSBJ In Its Future?

Among the doldrums that dominate the BizAv sector these days, its hard to get folks to look to the future... and by the time that the economy starts improving, we have a feeling that the industry will have a heckuva job catching up to the potential of a renewed market ready to do business. UNLESS... you happen to be Aerion.

Aerion is an intriguing and forward-thinking company formed for the purpose of developing and commercializing a fundamental breakthrough in supersonic transportation, i.e, a SuperSonic Business Jet. Aerion has already earned patents on several concepts related to supersonic aerodynamics and structures, including patents on its supersonic natural laminar flow wing design.

These folks seem up to the task... Prior to the formation of Aerion, its founders received several DARPA contracts for supersonic laminar flow wing studies, as well as research and test flights. This group also participated in DARPA's Quiet Supersonic Platform Program. A team of closely affiliated firms, including Pratt & Whitney, provide engineering design and analysis support in the following areas: aerodynamics, structures, systems, propulsion, stability and control, and aeroelasticity.

The Aerion jet will be fuel efficient at cruise speeds just below the speed of sound, allowing it to perform short- and long-haul overland missions with the same economies as today's large business jets. Range at high subsonic speed is more than 4500 nm and range at supersonic speeds exceeds 4000 nm. Over certain national or regional corridors, including parts of Canada, Australia and Siberia, the aircraft can fly at unrestricted speeds up to its maximum speed of Mach 1.6. And in other regions governed by ICAO regulations, the aircraft is capable of operating at boomless cruise speeds up to Mach 1.15. The Aerion can cruise efficiently, however, at speeds from .95 to .99 Mach over the continental US, where speeds are limited by regulation to less than Mach.

Copyright 2011, Aero-News Network, Inc., All Rights Reserved.

FMI: www.aerioncorp.com, www.aero-tv.net, www.youtube.com/aerotvnetwork, http://twitter.com/AeroNews
Code: [Select]
http://www.youtube.com/watch?v=VA8b_wHCFHo
Slán,
fightingirish

Slán ist an Irish Gaelic word for Goodbye.  :)

Avatar:
McDonnell Douglas Model 225 painting by "The Artist" Michael Burke (Tavush) 2018, found at deviantart.com and at Secret Projects Forum » Research Topics » User Artwork » McDonnell Douglas Model 225 Painting

Offline Grey Havoc

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Re: Aerion SBJ
« Reply #10 on: January 25, 2011, 10:13:02 am »
Perhaps they should have stuck with the V-tail, although I might be a bit biased in that regard.  :)
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Offline Reaper

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Re: Aerion SBJ
« Reply #11 on: May 10, 2012, 03:56:21 am »
Hi! Are there any news from Aerion?
It appears that there nothing going on at all or they progressing, because you dont hear much!
Does anybody information about the amount of employees they have?

Offline TomS

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Re: Aerion SBJ
« Reply #12 on: May 10, 2012, 06:40:31 am »
Aerion's latest press release says they're flying a test article under NASA's F-15 this summer.

http://aerioncorp.com/uploads/press/35.pdf
Quote
Aerion prepares for upcoming NASA F-15B supersonic flight tests

Reno, Nevada, April 17, 2012 – Aerion Corporation today released details about its next round
of supersonic test flights, a vital element in the company’s plan to design the world’s first
supersonic business jet (SBJ).

Aerion has designed the next test article that will fly in the centerline position under NASA’s F-
15B aircraft. The last round of tests during the summer of 2010 reached Mach 2.0 and used an
instrumented flat plate to map the high-speed flow field under the F-15B and validate computer
modeling. After analyzing the resulting data, aerodynamic design work for the new test article
began in late 2010, followed by mechanical design in mid-2011. Fabrication of the 40-inch
vertical span by 80-inch chord device is now underway and will be complete by the end of May.
A series of ground checks will be followed by one-hour supersonic test flights at NASA’s
Dryden Flight Research Center in June and/or July, pending aircraft availability.

The new test article will be more representative of the Aerion wing in order to evaluate
supersonic boundary layer transition properties as they relate to manufacturing standards for
surface quality and assembly tolerances, both crucial to future production of the SBJ.

“This year’s planned F-15B test flights of the latest Aerion test article prove our partnership
continues to be mutually beneficial,” said Dr. Richard Tracy, Aerion’s chief technology officer.
“Our work with NASA will further refine future practical applications of aerodynamics for safe
and efficient flight at higher speeds compared to today’s conventional subsonic civil aircraft.”


Offline Triton

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