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Search: Posts Made By: tuna hp
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12th Sep 2016, 20:01
Replies: 1
Views: 2,990
Posted By tuna hp

Does anyone know the significance of the 10,600 lb / 4,800 kg MTOW of many planes?

Several planes are advertised as having an MTOW of exactly or extremely close to 10,600 lbs / 4,800 kg. I am interested in understand why this weight is so popular. Aircraft with this MTOW spec...
5th Aug 2016, 15:20
Replies: 21
Views: 11,662
Posted By tuna hp

Yes! Exactly like that. I have read that late...

Yes! Exactly like that. I have read that late versions of the Aerostar could break 260 knots. If a similar plane was being designed from scratch today, using modern composites and related design...
3rd Aug 2016, 19:18
Replies: 21
Views: 11,662
Posted By tuna hp

Why the dearth of faster piston-powered planes?

There aren't very many fast piston airplanes in production. By "fast" I mean, if you look back in the early to mid 20th century, before turbines won out, there were lots of piston airplanes in...
15th Dec 2015, 02:12
Replies: 17
Views: 6,060
Posted By tuna hp

I keep reading a $1.5 BILLION number in articles,...

I keep reading a $1.5 BILLION number in articles, for example here:

Forbes Welcome...
16th Nov 2015, 20:23
Replies: 22
Views: 8,497
Posted By tuna hp

Come on, its not Netjet's fault. Its a chicken...

Come on, its not Netjet's fault. Its a chicken vs. egg situation: what came first, the airframer being in deep financial straits, or the airframer making a deal to sell a large portion of their...
9th Nov 2015, 19:57
Replies: 22
Views: 8,497
Posted By tuna hp

That and spending over a billion developing the...

That and spending over a billion developing the Learjet 85, which they've now had to write off and completely cancel, because the market for such midsize planes has shriveled, and a lot of the demand...
9th Sep 2015, 18:58
Replies: 24
Views: 15,399
Posted By tuna hp

This is what I was getting at... the G600 is as...

This is what I was getting at... the G600 is as much smaller than the G650 as the G550 is smaller than the G600. It also has less range and clean sheet engines... and yet delivers supposedly no more...
3rd Sep 2015, 01:28
Replies: 24
Views: 15,399
Posted By tuna hp

Wow great insight, thanks for posting the...

Wow great insight, thanks for posting the figures, they are so hard to come by freely on the internet.

Like I said, I don't believe that comparing the two aircraft at the same speed is a more...
26th Aug 2015, 01:50
Replies: 24
Views: 15,399
Posted By tuna hp

Hmm that's exactly the sort of comparison I would...

Hmm that's exactly the sort of comparison I would make but come to the opposite conclusion. I don't think that as manufacturers implement higher long range and normal cruise speeds, they are doing so...
22nd Aug 2015, 04:58
Replies: 24
Views: 15,399
Posted By tuna hp

Of course its more efficient than the G550, but...

Of course its more efficient than the G550, but not by nearly enough given the 20 year difference in entry date.

At least as far as cabin size and speed, G450:G500 as G550:G600. The G450 and G550...
21st Aug 2015, 16:13
Replies: 24
Views: 15,399
Posted By tuna hp

Doesn't G450 vs G500 prove my point? G500 has the...

Doesn't G450 vs G500 prove my point? G500 has the bigger cabin and faster, carries a couple percent less fuel and yet manages 15% better fuel efficiency. The G550 is a newer plane with a much better...
20th Aug 2015, 20:02
Replies: 24
Views: 15,399
Posted By tuna hp

Kind of. With the G650/ER they originally said...

Kind of. With the G650/ER they originally said that it was going to have a 5,000nm M .90 range, but then after they launched they said, "oops it actually has a 6,000nm M.90 range". And then there was...
20th Aug 2015, 14:07
Replies: 24
Views: 15,399
Posted By tuna hp

Well regardless, even if the G600 only has its...

Well regardless, even if the G600 only has its advertised fuel capacity of 38,760 lbs, that means that that it consumes 2% more fuel per mile than the 20 year old G550 even though the G600 has a...
19th Aug 2015, 21:12
Replies: 24
Views: 15,399
Posted By tuna hp

Will the forthcoming Gulfstream G600 really only have 6,200nm range?

I am very suspicious of Gulfstream's advertised claims regarding the maximum range of their upcoming G600 model. I feel that they are advertising misleadingly low range targets in order to trick...
18th Oct 2014, 16:02
Replies: 32
Views: 9,599
Posted By tuna hp

Its definitely an upgrade from the 450/550. *...

Its definitely an upgrade from the 450/550.
* max cabin width increased from 7'4" to 7'11"
* floor width increased 66" to 74"
* cabin height 6'2" to 6'4"
* Cabin length from 40'4" and 43'11" to...
15th Oct 2014, 20:53
Replies: 5
Views: 2,996
Posted By tuna hp

Third variant of new Gulfstream large cabin platform? Anyone have details?

Many of the later rumors surrounding the Gulfstream P42 program was that there were three variants: P42-1, P42-2, and P42-3. This nomenclature had been used on peoples' LinkedIn posts and in supplier...
14th Oct 2014, 19:10
Replies: 32
Views: 9,599
Posted By tuna hp

That's a good thought although they also mention...

That's a good thought although they also mention the G450 range as being 4,220nm in the same context and obviously the G450 doesn't fly at M.90 at all and at its faster speeds it would get nowhere...
14th Oct 2014, 15:38
Replies: 32
Views: 9,599
Posted By tuna hp

So I was finally able to get the gulfstream.com...

So I was finally able to get the gulfstream.com product pages for the new models to load and did this little comparison:

http://i.imgur.com/TsIRKPv.png

Am I missing something? Less than 3%...
14th Oct 2014, 15:19
Replies: 32
Views: 9,599
Posted By tuna hp

I just read the Aviation Week article....

I just read the Aviation Week article. Interesting to learn that it does not use the G650 fuselage (8'6" width), but instead has a 7'11" width. I would love to learn more about how they came to that...
22nd May 2014, 00:35
Replies: 29
Views: 13,041
Posted By tuna hp

Is there some niche where this would be a perfect...

Is there some niche where this would be a perfect plane? Maybe something that routinely requires sending teams of just 1 or 2 people to distant cities, where the destinations usually have pretty long...
20th May 2014, 14:05
Replies: 16
Views: 8,518
Posted By tuna hp

It amazes me how efficient Gulfstream is able to...

It amazes me how efficient Gulfstream is able to get this plane relative to its competition. Just dividing fuel capacity by range of this G650ER vs the Dassault 5X and 8X, it only uses 18%-19% more...
10th Feb 2014, 16:01
Replies: 46
Views: 11,228
Posted By tuna hp

Why are all you pilots so opposed to smoking on...

Why are all you pilots so opposed to smoking on the flight? My understanding is that it used to be very commonplace and that all the airplanes are still designed to be able to handle smoke through...
26th Nov 2013, 21:47
Replies: 18
Views: 7,251
Posted By tuna hp

Ha its just physics. A smaller wing with slats...

Ha its just physics. A smaller wing with slats should be able to achieve better field performance AND better cruise efficiency. All else equal there would potentially be a tradeoff in terms of lower...
26th Nov 2013, 12:12
Replies: 18
Views: 7,251
Posted By tuna hp

I completely agree with you that their wing seems...

I completely agree with you that their wing seems outdated and unoptimized, which is amazing when you consider that they actually don't use much more fuel than their competitors. They burn less fuel...
24th Nov 2013, 21:04
Replies: 50
Views: 23,476
Posted By tuna hp

To anyone who knows a little about aircraft...

To anyone who knows a little about aircraft design, do the 5X stats seem to make sense?

Falcon 5X
BOW: 38,100
MTOW: 69,600
Fuel: 28,200
Range: 5,200 @ M.80
lbs fuel per nm max range: ~5.4
...
7th Nov 2013, 12:50
Replies: 50
Views: 23,476
Posted By tuna hp

I very much doubt that they will design any more...

I very much doubt that they will design any more trijets. There is a market for the trijet's unique abilities regarding ETOPS but in the end from my understanding, the decision always had to come...
4th Nov 2013, 22:00
Replies: 50
Views: 23,476
Posted By tuna hp

Isn't the G6000 a significantly older plane? Sure...

Isn't the G6000 a significantly older plane? Sure they used to call it the Global Express XRS and before that plain "GLEX" but it was around far before the 7X's 2007 debut. I think many buyers prefer...
4th Nov 2013, 20:57
Replies: 50
Views: 23,476
Posted By tuna hp

In July 2012 they sent out a press release...

In July 2012 they sent out a press release announcing the completion of their 200th 7X. That should give a pretty good starting point.
25th Oct 2013, 18:33
Replies: 50
Views: 23,476
Posted By tuna hp

Falcon 7X first deliveries started in I think...

Falcon 7X first deliveries started in I think 2007. That makes it about 6 years old, which means that (if they follow industry standard product lifecycle patterns) they are due for a major update...
24th Oct 2013, 18:22
Replies: 50
Views: 23,476
Posted By tuna hp

I think there is still demand for a trijet...

I think there is still demand for a trijet regardless. Operators who either (1) genuinely highly value the safety characteristics of a trijet, (2) need more range than the 5X but better field...
23rd Oct 2013, 05:03
Replies: 50
Views: 23,476
Posted By tuna hp

They're referring to the CFM56. Different engine....

They're referring to the CFM56. Different engine. The Silvercrest is a purpose built business jet engine for the 9,500 to 12,000 lb thrust range from what I understand. Well, they may pretend to try...
23rd Oct 2013, 04:27
Replies: 50
Views: 23,476
Posted By tuna hp

I'm surprised by the negative reactions, this 5X...

I'm surprised by the negative reactions, this 5X is much more exciting than any of the reporters or analysts had dared speculate. They were all guessing a plane about the Falcon 2000 in size, with...
11th Sep 2013, 00:59
Replies: 44
Views: 16,197
Posted By tuna hp

@Yellow&BlueBaron You confirm the price when...

@Yellow&BlueBaron

You confirm the price when you sign your contract.

Planes are heavier earlier in their production for the same reasons everything else is, I guess. They spent over a billion...
10th Sep 2013, 21:37
Replies: 44
Views: 16,197
Posted By tuna hp

1: If he had an early delivery slot, he actually...

1: If he had an early delivery slot, he actually could have made money on this transaction. The original price on the green plane was I believe $58.5M or $59.5M but has since gone to over $70M in...
9th Sep 2013, 21:58
Replies: 45
Views: 12,456
Posted By tuna hp

Cool thread. I have also wondered why Gulfstream...

Cool thread. I have also wondered why Gulfstream has continued to market the rear galley even though it seemed to be made irrelevant with the G550 and G650.

G550 added a 7th row of windows to the...
Showing results 1 to 35 of 78
 


 
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