Author Topic: Profiling by JP Vieira - New profiles 2017 (Read 455886 times)

GTX_Admin · « **Reply #125 on:** January 22, 2012, 02:40:21 PM »

Forget a real turbojet, what about either a thermojet or even something such as a development of the Coanda-1910:

JP Vieira · « **Reply #126 on:** January 23, 2012, 01:25:57 AM »

Hello
Greg: the point in doing this was to see what happened if the jet engine was developed either 20 years ealier or 20 years latter.

JP Vieira · « **Reply #127 on:** January 23, 2012, 01:28:36 AM »

Hello
And what-if the jet engine was developed only 20 years latter...?
Here is one the latest piston-engined fighter: the BAc Lightning F.MK6

Tophe · « **Reply #128 on:** January 23, 2012, 01:32:55 AM »

Wow! A brand new old plane!

GTX_Admin · « **Reply #129 on:** January 23, 2012, 02:33:05 AM »

Quote from: JP Vieira on January 23, 2012, 01:25:57 AM

Hello
Greg: the point in doing this was to see what happened if the jet engine was developed either 20 years ealier or 20 years latter.

Fair enough - I tend to think that airframe design would adapt to match the engine design...maybe.

Love the Piston Lightning. Can only imagine the engine size.

The Big Gimper · « **Reply #130 on:** January 23, 2012, 02:58:13 AM »

How about a PW R-4360-51 VDT " Variable Discharge Turbine" 4,300 hp with contra-props?

elmayerle · « **Reply #131 on:** January 23, 2012, 04:25:00 AM »

Quote from: The Big Gimper on January 23, 2012, 02:58:13 AM

How about a PW R-4360-51 VDT " Variable Discharge Turbine" 4,300 hp with contra-props?

No, that's too small. How about a Lycoming R7755 rated at over 5000 hp with or without contraprops (if the propeller design can do without it - twist to the blades like props on the Bf109 and Fw190 and a five-bladed prop, not having contraprops makes for a more robust and simpler gearbox).

elmayerle · « **Reply #132 on:** January 23, 2012, 04:27:07 AM »

Quote from: JP Vieira on January 23, 2012, 01:28:36 AM

Hello
And what-if the jet engine was developed only 20 years latter...?
Here is one the latest piston-engined fighter: the BAc Lightning F.MK6

Oh, I quite like it, but shouldn't you have intakes in front of your radiator(s) exhausting around the prop(s) rather than cooling gills; this looks like a reversed cooling flow without the scoops and I doubt the aerodynamics would support it.

GTX_Admin · « **Reply #133 on:** January 23, 2012, 05:15:34 AM »

Maybe it uses a form of evaporative cooling?

The Big Gimper · « **Reply #134 on:** January 23, 2012, 07:46:05 AM »

Quote from: elmayerle on January 23, 2012, 04:25:00 AM

Quote from: The Big Gimper on January 23, 2012, 02:58:13 AM
How about a PW R-4360-51 VDT " Variable Discharge Turbine" 4,300 hp with contra-props?
No, that's too small. How about a Lycoming R7755 rated at over 5000 hp with or without contraprops (if the propeller design can do without it - twist to the blades like props on the Bf109 and Fw190 and a five-bladed prop, not having contraprops makes for a more robust and simpler gearbox).

I have never heard of the R7755. I'll have to look it up next time I get to DC and the NASM Annex.

elmayerle · « **Reply #135 on:** January 23, 2012, 01:45:12 PM »

Wikipedia has a good article on it. It would have an advantage for this application in that it's liquid-cooled, not air-cooled.

GTX_Admin · « **Reply #136 on:** January 23, 2012, 05:05:14 PM »

Lycoming XR-7755

Logan Hartke · « **Reply #137 on:** January 23, 2012, 11:49:52 PM »

"No, just change the oil and replace the spark plugs."

"Very good, sir, you can pick up in March."

Cheers,

Logan

Brian da Basher · « **Reply #138 on:** January 24, 2012, 05:49:59 AM »

I really like your jet-powered Fury, JP! That's some really great imaginative thinking!

Brian da Basher

JP Vieira · « **Reply #139 on:** January 26, 2012, 12:29:00 AM »

Many thanks for all the comments.
How realistic would an aircraft like the piston-engined Lightning? If it had an engine like that (5000 hp) what would be its performance...?

JP Vieira · « **Reply #140 on:** January 26, 2012, 12:52:42 AM »

Hello
Continuing with one of the scenarios (the emergence of jet engines earlier) how would the Battle of Britain be fought by opposing jet fighters...?
here is one possibility: jet-powered Spitfires vs Bf.109

Tophe · « **Reply #141 on:** January 26, 2012, 01:30:11 AM »

Wonderful! Great imagination! Thanks a lot!

RussC · « **Reply #142 on:** January 26, 2012, 01:51:15 AM »

Nice concept on the BoB fighters. I think the location of the tailpipe will insure the spit driver of never having frozen feet. He will have a semi recumbent seat, which will be found like the modern seats to allow more G's in maneuver.

Fabric rudders replaced by metal.

A jet Defiant might be interesting. And a Jet Do-17 would be fabulous !

AXOR · « **Reply #143 on:** January 26, 2012, 02:50:46 AM »

Again,nice work,I really like your concepts !

Alex

GTX_Admin · « **Reply #144 on:** January 26, 2012, 04:03:56 AM »

Lovin' your thinking!!!

sotoolslinger · « **Reply #145 on:** January 26, 2012, 11:27:44 AM »

Effin brilliant is what that is :)

elmayerle · « **Reply #146 on:** January 26, 2012, 11:48:56 AM »

Gorgeous work!! I suspect, though, that the weight and balance calculations on that Messerschmitt are going to be a right pain with the engine back there.

JP Vieira · « **Reply #147 on:** January 26, 2012, 07:31:51 PM »

Many thanks for your comments!
I will try to do as many jet versions for BoB and WWII as possible...

JP Vieira · « **Reply #148 on:** January 26, 2012, 07:37:56 PM »

For now something a little different...
The Mil Mi-27 (NATO codename Holm) was an amphibious version of the Mi-24.
This helicopter featured the hull of the Mi-14 Haze and a rear ramp allowing for rapid insertion /extraction of amphibious forces.
The Helicopter could also provide air support to those infantry forces, because it retained the armament capability of the Mi-24
It was used by the naval infantry of the USSR and by Special Forces of many Warsaw pact countries.

tsrjoe · « **Reply #149 on:** January 26, 2012, 09:48:33 PM »

Very cool Mi.24 redesign, looks plausible too, hmm another one that would work well in plastic too methinks, Sea King hull, Mi.8 boom?


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Author Topic: Profiling by JP Vieira - New profiles 2017 (Read 455886 times)