B-27 Switchblade, page 2
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reply posted on 15-4-2003 @ 02:06 AM by Estragon
It’s something of an old favourite and you’ll find a lot on old ATS archives. It’s there in almost any “black” aircraft forum and the consensus is of a swing-wing fighter with high stealth capability. There’s all manner of speculation – (It doesn’t help that there’s a Russian missile code-named switchblade and a dreadful Eddy Murphy film : “I Spy” about stealing the “switchblade”)
I don’t quite see it as a “B 27” unless this was some deliberately misleading cover-name for a project (a real B-27 would be two before the Superfortress and about 60 years old, I guess).
Also, it’s not easy to see what obvious current or anticipated “gap” such a machine would fill. I have seen it –on a less speculative level –as a name for a development of the F111 and as the A-17. Mach 9 does seem very, very improbable.
The area51 site above has an entertaining brief article on it.
On “swept forward” design, I think we’d agree that there has been some confusion in certain postings here. It is, of course, quite an old idea and several design projects were undertaken for the Luftwaffe. The problem was, of course, the dangers of structural fault – dangers somewhat minimised as technology has produced newer and stronger composites.
There’s an excellent article here
www.centennialofflight.gov...
The Su (or, S-)-37 Berkut has been a firm favourite on ATS and a search should turn up some goodies.( you’ll find it as the S ( or, Su)-47, as well)
However, to prove there’s nothing new under the sun, I’d recommend a search on the German HFB.320 Hansa jet. 40-50 (depends on your sources) of these “Executive Learjet” types were built and they flew from the 60’s until quite recently (Estragon has actually seen one): genuinely swept forward.
Nice picture here :
1000aircraftphotos.com...



[Edited on 15-4-2003 by Estragon]


reply posted on 28-2-2005 @ 04:15 PM by trepida
Originally posted by conspiracymyass
First off there was the B-27 Designator has already been used in the aircraft inventory for a proposed experimental aircraft based on the B-26

First off this is a WWII aircraft. Each new approved Concept/R&D airfram clasified as a bomber for the Air Force is given a Number in order of witch they were aproved even if that number never makes it past the Y or X stage the number is used. But Note that the numbers have all reset with the development of the B1. The current B1 is the secound B1 the first dates back to before WWII. Yes your right in the Idea that the number for the Switchbalde is not going to be B27. Just for the wrong reason. I.E. the B27 number is again available but there must first be a B3-B26, granted there most likely already some of these in R&D that we do not know of.

2nd you can't have a swept wing aircraft where the wings will sweep forward, The only swept wing aircraft design in the US was the X-29

Your way off here. The first forward swept wing Aircraft was the German with the JU 287 wich first flew in Aug 1944. The JU287V1 ahd speed of 620 Km/Hr with 4 jets, JU287V3 had 800Km/Hr, and flew up to 30,840 feet top alt. The soviets have a forward swept winged airfraft also. What I have no record of is a veriable forward swept wing.


3rd if you're referring to this as the switchblade:
www.area51zone.com...

On this the Switchblade is U.S. Patent Nov 16 1999 #5,984,231 as released in Popular Sci Mag. I also had a USAF FTD instructor that was picked to work on a aircraft that meets the discription of the switch blade. My neighbor back in 2000 was a weapons system developer asigned to Langley AFB and he also confirmed the aircraft when I asked him about it. Also had a friend say one night late a aircraft fitting the description landed and was secured in a hanger at Lakenheath AFB UK. Also keep inmind there is no airfraft in the US inventory today that can do the Job the F-111 did. The F-15E is the closest but cant carry the load nor does it have the range or ability to linger on target. The F-111 was retired do to a developent of structural cracks in the Wing Sweep box limiting them in G loads allowed. As the last few bases drew down in in 1994 there was a larg number of my coworkers on F-111 that disapeared so to speek. We all where sloted to Mix AFSC with F-15s but for example. When I tested For Rank in 1994 (F-111 only troops) there was over 1,000 E-4 testing for E-5 but the next year when it was F-15 and F-111 troops together testing there was only 480 E-4 testing for E-5. There should have been an increase. When RAF Upper Hayford closed all its F-111 troops had orders to Cannon AFB NM wich would have put them at 250-300% manning Yet when I talk to a friend they where not over maned. Those troops went some where. One more point on the Switchblade as its got to be a stealth Aircraft (in my opinion) it will have the special outer coating and with is security level will need to be hangered just like the F-117. Military thinking today is to keep cost down so this aircraft will most likely be stationed at Holloman AFB NM along with the F-117. This would finish out the Wing these as now there is only one squadron of F-117. This would work well also as the airframs will have sim missions. Now keep in mind that the German 1st Air Force was invited to Holloman and fly the Tornado wich is swept wing and about the same size as the switchblade. The US government built hangers for the Germans something we almost never do state side (thats not maint hangers thats parking hangers for each Aircraft) for our own aircraft with the exception of the F-117. Note that the German Airforce has now left Holoman or so I have been told so there are empty hangers waiting for the switch blade. One other interesting point the F-117 squadron was built up and made operational at Tonapaw and stayed there untill a new airframe needed the space. The time the F-117 left Tonapaw falls in line for the time the Switchblade would have been built up to Squadron level. If you dont think the Switch balde can be real do to lack of info, keep in mind the plans for the F-117 was started before the F-4, and it was kept from the public. (F-117 designator comes after the F-111 and before the reset to F1 or F-4)

4th so what if there is a patch that said switch blade on it? Do you really think if there was a secret aircraft squadron a pilot or aircrew member would even think of wearing the patch in a public location let alone leave it for someone to find????

The patch is not the Swich Blade patch that was just a hunch from someone looking for proff. The patch belongs to the Bird of Pray boeing test bed.



are people really this gullable?????



reply posted on 28-2-2005 @ 04:33 PM by trepida
There is no hard proof of the SR 71 doing Mach 9. But the key is the thermal barrier. The higher you fly the thinner the air, so there for less friction. So, you have to go faster before you reach a speed where the friction will over heat the skin of the Airframe, (thermal barrier). The SR 71 is the fastest recorded jet powered aircraft due to its high ALT and Titanium skin (meaning it can withstand far greater temps).

So in order to go Mach 9 for example you must be effectively out of the atmosphere or at least to a point you will starve conventional Jet engines, due to lack of oxygen to burn. Now the natural logic is you will need a non oxygen burning eng. or supplemental oxygen supply to operate at a height sufficient to lower the air density to allow you to go Mach 9+ (I.E... the space shuttle). Or you must have a way to dicipate the heat.

In JANES, (important book) in 1996 there was information on an experimental Jet eng made by Bell that would do Mach 9 at sea level. No known conventional airframe would resist melting long before reaching this speed at sea level. That makes you think they must have invented a way to bleed off the heat or else why make a mach 9 eng.

That takes me to a NOVA progam from the PBS on Heat shielding developed for the space shuttle. There was a material developed but was not ready until after the Shuttle was completed. It was shown on the NOVA progam it was developed in England and was called thermal plastic. It converted 99.9% of heat to light. Yes I couldn't believe it either. In the show they had a cube of it in a blast furnace and then they reached in with a pair of titanium tongs and pulled out the bright shining cube. The tongs were white hot from being in the furnace. The person set down the cube and took off his glove and picked it up with his bare hand.

Now if you coated an airframes leading edges with this thermal plastic, then the heat would not build up and you could pass through the thermal barrier. When I repeatedly questioned a Boeing engineer about this a few years ago asking him, "why arent we using thermal plastic to enable aircraft to pass through the thermal barrier?" Finally, he said "trust me, its being done."



[edit on 28-2-2005 by trepida]


reply posted on 28-2-2005 @ 06:37 PM by Jcolegrove



reply posted on 17-3-2005 @ 09:42 PM by SwitchbladeNGC
Originally posted by Estragon
However, to prove there�s nothing new under the sun, I�d recommend a search on the German HFB.320 Hansa jet. 40-50 (depends on your sources) of these �Executive Learjet� types were built and they flew from the 60�s until quite recently (Estragon has actually seen one): genuinely swept forward.
Nice picture here :
1000aircraftphotos.com...


I looked at the picture and was unable ttell from that view if the leading edge actually swept forward or went straight out with a forward sweeping trailing edge. I did a google search and found one picture which showed a good view from underneath, but unfortunatly the link to the pic from the thumbnail was broken so I was unable to get a good view. If they do sweep forward they don't do it to nearly the same degree as the Berkut or the Grumman X-29. But good none the less.
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