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  #21  
Old 08-16-2019, 03:23 AM
oy-rvc oy-rvc is offline
 
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The viperjet is a pretty cool plane, but probably not something that falls in the category of homebuilds that a single average person can built themselves in a few years. And to my knowledge not produced anymore. Itís more in category with L-39s and the operating costs are very much higher.

What is interesting about this jet from Sonex is that itís coming from a company with a concept similar to Vans. Simple sport airplanes of aluminum constructions in the experimental market that can actually be built by a single person within a reasonable amount of time. While Vans concept is simplicity and keeping cost down its not really how many RVs are built anymore. Garmin flatscreens, C/S props, fancy paintjob, leather interior ect. I bet many RVs are north of 100K$ before they every roll down the runway.
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  #22  
Old 08-16-2019, 08:51 AM
iwannarv iwannarv is offline
 
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I'd go for a long-legged -7A with 2 TJ100s under the wings. Very ME-262 like,
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  #23  
Old 08-16-2019, 02:16 PM
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RV8JD RV8JD is offline
 
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Quote:
Originally Posted by oy-rvc View Post
The viperjet is a pretty cool plane, but probably not something that falls in the category of homebuilds that a single average person can built themselves in a few years. And to my knowledge not produced anymore. Itís more in category with L-39s and the operating costs are very much
Yes, Iím aware of that. And this whole thread is quite fanciful!
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  #24  
Old 08-18-2019, 10:01 AM
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Snowflake Snowflake is offline
 
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Something along the lines of a Tutor would make sense... Tail-cone mounted engine, intakes on either side of the cockpit...

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  #25  
Old 08-19-2019, 06:20 PM
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N941WR N941WR is offline
 
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My performance numbers came out really close to the SIPA S.200, unfortunately.

https://en.m.wikipedia.org/wiki/SIPA_S.200_Minijet
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  #26  
Old 12-28-2019, 02:59 AM
DougCronkhite DougCronkhite is offline
 
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Quote:
Originally Posted by Mel View Post
Another reason for tricycle gear on a jet was proven with the original "tail dragging" ME-262. Without prop blast on the rudder, direction control is minimal during early take-off roll. This would also provide a need for nosewheel steering.
If I remember correctly that was actually a problem with the engine exhaust creating strange airflow around the tail..
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  #27  
Old 12-28-2019, 06:22 AM
svyolo svyolo is offline
 
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Location: bellingham, wa
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The smaller the turbine engine, the worse the fuel specs. Turbojet, prop, whatever. Any very light airplane powered one ends up being not much more than a toy. Fun for sure, but not much more.
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  #28  
Old 12-28-2019, 08:36 AM
TS Flightlines TS Flightlines is offline
 
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Awesome thread---especially for a dreamer like me. So yes the problem of lack of range because you cant carry enough fuel is a handicap. Paul proved that. Even a turbine RV isnt 'economical' because of fuel burn. But certainly sounds cool. ( anyone watched the Pocket Rocket You Tube?) https://www.youtube.com/watch?v=Tisl1IU3KSY&t=321s
Just wayyyyy cool. But not practical.

The thing that I cant get past getting the Vne up to where a turbine or a jet 'might' work----if other things can be solved. I'm sure you engineers can come up with ways to increase the Vne of the airframes, no matter what prowerplant is installed. (Retract RV10 or RV14A with something to cruise at 200+.) Small turbine of 350 SHP---that neither Rolls nor Pratt is going to develop, and isnt available in the surplus market, and would be expensive anyway. But, you have to admit----it sure would be cool AND you could carry stuff!!

WE actually talked with a turbine development company on a RV14A project for a client, but that was 3+ years ago, and I dont know if its going to happen or not. The PBS TP100 at 241 HP might have been a good start---but I understand that development issues held it back---as well as engine/prop costs to the the eventual builder.

But cool to think about--

Tom
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  #29  
Old 12-28-2019, 08:41 AM
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D Weisgerber D Weisgerber is offline
 
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Quote:
Originally Posted by DougCronkhite View Post
If I remember correctly that was actually a problem with the engine exhaust creating strange airflow around the tail..
Thats what I remember, I think the test pilot had to tap the brakes to get the tail up. The wings were blanking out the H stab and elevator.
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  #30  
Old 12-28-2019, 09:25 AM
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Tandem46 Tandem46 is offline
 
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Quote:
Originally Posted by fl-mike View Post
...I proposed an A-10 layout for a two-seater with two engines..
I vote for this! With externals for x country fuel consumption.
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