Re: Diamond D-Jet First Flight

[Montblack]

("Martin Hotze" wrote)
> sorry for this ON-TOPIC *gasp* post *g*:
> pulled off the Avweb newsletter:


I wonder if 25,000-ft is for quicker certification and they'll end up
applying for higher certification at a later date? Cirrus did that with
their composite airframe life numbers.

Still wondering...

I wonder how much lighter the D-Jet would be using this system?
http://www.ainonline.com/Issues/12_05/12_05_spectrum_1.htm
A MUST READ!!! :-)

"Composites are much better than aluminum, which has been used in the
aerospace industry since the 1930s," Blue asserted. He said composites are
the reason that Spectrum can develop a 10-seat twinjet with an mtow of 7,300
pounds. According to Blue, the Model 33's one-piece fuselage, complete with
integrated window and door frames, weighs a mere 309 pounds. The aircraft's
single-piece, "co-cured" wing weighs just 305 pounds."

Screw the 10 place jet - Spectrum 33 (kidding, kidding, kidding)

Screw the D-Jet/Eclipse/Mustang 4-6 seat group. (still kidding)

Give me Spectrum's construction methods (link), with a single (mini)
HondaJet engine, on a mini D-Jet single seat platform. I'm telling you
there's a market out there for this!! (Not kidding)

I'm guessing you're looking at a 300 lb plane - using the Spectrum #'s in
the link.

Single-piece wing .......40 lbs.
One-piece fuselage ... 40 lbs.

Engine ....................... 150 lbs(?) ...200 lbs(?)

[1,568-pound-thrust Williams FJ33-4A = 290 lbs]

http://world.honda.com/news/2003/c031216_1.html
[1,670-pound-thrust HF118 = 392 lbs] Super quiet! Too heavy.

What's left? ...................70 lbs. (At the very most!)
Total Empty Weight ....300 lbs. :-)))))

[450 lb. Empty Weight with an off the shelf Williams FJ33-4A engine - too
much engine? <g>]


Montblack
D-Jet + Cri-Cri + Star Trek 4's Transparent Aluminum + the reliability of
Honda.

[Jose]

> Total Empty Weight ....300 lbs. :-)))))

.... and how much fuel?

Jose
--
The price of freedom is... well... freedom.
for Email, make the obvious change in the address.

[Kingfish]

Montblack wrote:

>>>I wonder if 25,000-ft is for quicker certification and they'll end up
applying for higher certification at a later date? Cirrus did that with

their composite airframe life numbers<<<

I read the lower ceiling was more an issue with RVSM. By certifying the
plane (I realize this hasn't happened yet) with a ceiling below
29,000ft RVSM equipment is not required (cost factor) and the pressure
hull doesn't need to be as stout to handle the higher cabin
differential (cost & weight factor).

>>>Give me Spectrum's construction methods (link), with a single (mini) HondaJet engine, on a mini D-Jet single seat platform. I'm telling you there's a market out there for this!! (Not kidding) <<<

I think an autogyro might make a better commuting vehicle. Much easier
to find a landing spot than a jet, and no type rating involved. But, a
single seat jet would be the ultimate toy for the gotta-have-it crowd.

[Montblack]

("Jose" wrote)
>> Total Empty Weight ....300 lbs. :-)))))

> ... and how much fuel?


It's basically wings, a fuel tank and a human attached to an engine.

The engine size might play a role in the final numbers. <g>

34 gph x 3 hrs + 1hr = 136 gallons

Full Fuel + reserve ..... .950 lbs.
Pilot and baggage .......250 lbs.
Total Useful Load ......1,200 lbs.
MontJet Empty ..............300 lbs.
MTOW ........................1,500 lbs.

440 kts
45,000 ft
1,500 (sm) range (IFR)


Montblack
Deposits are non-refundable!

[Jose]

> It's basically wings, a fuel tank and a human attached to an engine.

I built a model rocket like that once. Never saw it again.

Jose
--
The price of freedom is... well... freedom.
for Email, make the obvious change in the address.

[Don Tuite]

On Fri, 21 Apr 2006 13:59:53 GMT, Jose >
wrote:

>> It's basically wings, a fuel tank and a human attached to an engine.
>
>I built a model rocket like that once. Never saw it again.
>
I thought about doing that to my little sister, too.

Don