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#4764651 - 05/22/18 08:06 AM Smallest Personal Jet Air Plane
Shannow Offline


Registered: 12/12/02
Posts: 39927
Loc: 'Stralia

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#4764654 - 05/22/18 08:11 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
Astro14 Offline


Registered: 10/10/10
Posts: 8545
Loc: Virginia Beach
And I thought the BD-5 was small...
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#4764698 - 05/22/18 08:54 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
UncleDave Online   content


Registered: 06/02/14
Posts: 1646
Loc: Ca.
was expecting to see a bede micro...yup thats tiny....

The music is hilarious.

UD
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#4764712 - 05/22/18 09:08 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
ZZman Offline


Registered: 03/17/08
Posts: 5792
Loc: Michigan
I could do without the stupid music
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#4764733 - 05/22/18 09:23 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
Ducked Offline


Registered: 10/25/12
Posts: 4388
Loc: Taiwan
Wish they hadn't cut the tiny but apparently fairly powerful engines starting, was interested to see and hear that.

Re Smallest Pesonal Jet, its close, but....


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#4764825 - 05/22/18 11:06 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
Cujet Offline


Registered: 02/15/03
Posts: 7164
Loc: Jupiter, Florida
Ohhhh, the engine is glowing on takeoff! Wonderfully over temp'd.

I've seen the little Sonex jet fly at Sun N Fun. That was pretty cool too.

Go to the 5 minute mark to see it fly.



Edited by Cujet (05/22/18 11:08 AM)
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#4764858 - 05/22/18 11:40 AM Re: Smallest Personal Jet Air Plane [Re: ZZman]
Astro14 Offline


Registered: 10/10/10
Posts: 8545
Loc: Virginia Beach
Originally Posted By: ZZman
I could do without the stupid music


It was designed by a French guy, so, they chose some "French" music, I think...but yes, best watched with the volume down...
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#4765147 - 05/22/18 03:54 PM Re: Smallest Personal Jet Air Plane [Re: Shannow]
Shannow Offline


Registered: 12/12/02
Posts: 39927
Loc: 'Stralia
I didn't mind the music...I loved the movie Inception.

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#4765616 - 05/23/18 06:19 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
Ducked Offline


Registered: 10/25/12
Posts: 4388
Loc: Taiwan
What are the engines from/for?

Seem too small for air-breathing missiles that I've heard of, though I'm likely very out of date.

Commercial / military drone?

Wonder how it does with an engine out. They're fairly close together so it might be more forgiving than most twins.

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#4765624 - 05/23/18 06:39 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
Shannow Offline


Registered: 12/12/02
Posts: 39927
Loc: 'Stralia
The flying squirrel suits started using the jets that were made for scale aircraft.

(early developers used turbo gizzards - then they started making them proper).

One of my lecturers in the late 80s (turbomachinery and dimensional analysis - two subjects) suggested that microturbines wouldn't work, as the clearances didn't scale with the other dimensions.

The first turbo based GTs were pretty sketchy (Nye was one of the early ones), but clearly, they are doable.

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#4765633 - 05/23/18 06:53 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
Cujet Offline


Registered: 02/15/03
Posts: 7164
Loc: Jupiter, Florida
Having built a number of small gas turbine engines, you are not wrong. Small ones have real issues with acceptable performance. Clearances are a big part of the problem. Williams tried a 3 spool turbofan for the Eclipse jet. Even using one piece bladed disks and ultra tight clearances, Williams was never able to achieve predicted power or TSFC (economy) . Pratt came to the rescue with conventionally sized parts in a compact package.

Aviation is full of bogus claims and a harsh reality. That reality being Range, Speed and Altitude are almost mutually exclusive goals. The smaller, the more elusive those goals become.
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#4770000 - 05/28/18 06:43 AM Re: Smallest Personal Jet Air Plane [Re: Ducked]
billt460 Offline


Registered: 03/30/15
Posts: 4416
Loc: Glendale, Arizona
Originally Posted By: Ducked
What are the engines from/for?


They are for powering R/C model turbine aircraft. Similar to these. They are made by several manufacturers.

http://www.chiefaircraft.com/radio-control/turbine-jet-aircraft/turbines.html

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#4770025 - 05/28/18 07:38 AM Re: Smallest Personal Jet Air Plane [Re: billt460]
Ducked Offline


Registered: 10/25/12
Posts: 4388
Loc: Taiwan
Originally Posted By: billt460
Originally Posted By: Ducked
What are the engines from/for?


They are for powering R/C model turbine aircraft. Similar to these. They are made by several manufacturers.

http://www.chiefaircraft.com/radio-control/turbine-jet-aircraft/turbines.html



Two of the biggest ones would give about a 100 pounds of thrust. I dunno how much you need but that doesn't seem a lot.

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#4770114 - 05/28/18 09:10 AM Re: Smallest Personal Jet Air Plane [Re: Shannow]
SEMI_287 Offline


Registered: 02/25/11
Posts: 1338
Loc: Up State NY
Here's the video without music and landing.



And the engines used..

TJ-20 Turbojet

I wonder if this counts as turbine PIC time. ???
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#4770915 - 05/29/18 06:40 AM Re: Smallest Personal Jet Air Plane [Re: Ducked]
billt460 Offline


Registered: 03/30/15
Posts: 4416
Loc: Glendale, Arizona
Originally Posted By: Ducked
Two of the biggest ones would give about a 100 pounds of thrust. I dunno how much you need but that doesn't seem a lot.


Jet Cat has the P-550 that produces 123 pounds of thrust.

http://modelaircraftcompany.com/newshop/en/home/90-jetcat-p550-pro-turbine.html

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