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June 8, 2014 at 4:18 pm in reply to: Solar One 1978 Britain number ONE in solar flight ! #387368

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Same person David Williams also designed the 1962 SUMPAC aerodyne.

June 8, 2014 at 4:06 pm in reply to: Airbus SpacePlane that looks like a plane… #2214165

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They used to be working on a solution for space tourism a few years ago (sub-orbital, think SpaceShip Two). While that has obvious uses as a launch platform for a small upper stage to deliver mini-sats into LEO at low cost, the plane as such is almost certainly not meant to enter or return from actual orbit, thus explaining the most un-spaceplane like configuration.

To me it looks like something that is able to make sneak peak at 80 km altitude..and return and take off with jet power…rocket situates at the rear…and fuel up to mid hull.

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Edit; make that 100 km; http://www.space.com/19279-eads-astrium.html

June 6, 2014 at 5:52 pm in reply to: What is the minimum instrumentation in a hyperlite ? #387403

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45 kilo AC 1/6 scale model plans are advancing ( flyweight 600-700 gramms ).

This ( 1:1 scale model eventually ) will weigh exactly ½ of what the SOLAR CHALLENGER weighed and has 1/4 th the drag and double the panel efficiency !

😀

June 5, 2014 at 8:53 am in reply to: Mignet Flying Flea G-AFFI #897402

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Wasn’t this AC prone to unrecoverable dive ?

Awesome reconstruction BTW .

June 4, 2014 at 7:50 pm in reply to: Saab Gripen & Gripen NG thread #3 #2215148

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What do you mean by legit? If you mean that it is something created by Saab themselves, yes, it was indeed part of Saab sales material in a presentation somewhere. However, it is ultimately a sales presentation and should be treated as merely that.

The sheet would have been 3 meters wide if the right scale for the 5th gen heavies were aimed to show in scale….!

June 1, 2014 at 7:49 pm in reply to: Saab Gripen & Gripen NG thread #3 #2215768

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What mission(s) do the swiss envision in which the Gripen in its most advanced form is inadequate? I can understand the cost argument and the need for a fighter, but the Gripen is more than capable of handling any threat that may come over the swiss and then some.

That is right..no adversary can see a plane that is flying behind the Alps.

http://www.flightglobal.com/blogs/the-dewline/2014/03/fighter-friday-part-2-gripen-e/

June 1, 2014 at 3:41 pm in reply to: Solar Impulse II revealed ! #387503

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60 MINUTES about Solar Impulse; http://www.cbsnews.com/news/solar-powered-plane-aims-to-fly-around-the-world/

This seems to be the SI 1 project.

They have to fly 83,4 km/h average to make it in 20 days.

http://geography.about.com/library/faq/blqzcircumference.htm

A 170 km/h ship and flying only on day time could be faster !?

June 1, 2014 at 9:59 am in reply to: Size of the new 5th gen fighters…too big !? #2215809

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This was produced by a small conversation on a finnish site.

May 30, 2014 at 9:00 pm in reply to: What is the minimum instrumentation in a hyperlite ? #387506

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I am going to fly an R/C model of this HIPPIÄINEN this summer !

I can provide plans for an 1/6 scale model for very low price.

May 27, 2014 at 7:31 pm in reply to: Fancy a P-51 H of 5000 £ and 28 kts stall speed ? #387543

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Here are the latest modifications to reach extremely high speed ( 900 km/h + at 950 hp ) !

May 27, 2014 at 7:22 pm in reply to: Solar Impulse II revealed ! #387550

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I was reading about this and how it’s going to fly around the world in one go. But how does the pilot go to the toilet? Nappies? A special seat that converst into a comode? Wouldn’t want the job of emptying that out at the end of the trip.

I think this is 2 seater now ( maybe not )…top speed 140 km/h….previous was 70 km/h !

Look at the wing foil..it is much faster now.

May 24, 2014 at 9:34 am in reply to: Size of the new 5th gen fighters…too big !? #2216911

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Plane needs now less than 990 hp to go as fast as a Me-262.

The Bonanza V-tail looks cool.

May 24, 2014 at 6:06 am in reply to: The PAK-FA News, Pics & Debate Thread XXIV #2216927

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Did you miss the part where I uploaded the picture of the ACTUAL cross sections, correctly scaled?
Here is a spreadsheet with the actual figures, if that’s not enough. See the problem with f-22?
[ATTACH=CONFIG]228590[/ATTACH]

Frontal projections, btw, mean f**k all.

I am only referring to frontal projections…and you are right the cross section is clearly very slim in SU-27…but it also increases the wetted area. You could have left the nacelles the to be seen in SU-27…as you have in F-22 cross section.

May 23, 2014 at 10:22 am in reply to: The PAK-FA News, Pics & Debate Thread XXIV #2217100

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Am sure its just that particular picture TR1, but dont those weapons look like they’re canted inwards?

I think they are…and for a good reason.

May 23, 2014 at 5:44 am in reply to: Size of the new 5th gen fighters…too big !? #2217112

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Fighters with props would be limited in their ceiling. How are they going to intercept bogies at 40K feet?

This has ceiling at 15 KM..but has to use 700 hp to get there. It means burning a lot of fuel and shortening the life span of the engine. Possibly it can go there ballistically for a shorter visit with lesser fuel burn.

500 L fuel indicated here.
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