t*n
发帖数: 14458 | 1 那个叫i.e.的网友在米国从事航空工业的
从以往在飞扬的帖子看来是专业人士
而且工业经验很丰富
不知道他上不上买卖提
http://www.fyjs.cn/bbs/htm_data/27/1101/301072.html
http://forum.keypublishing.co.uk/showthread.php?t=105427&page=19
同一主题还有他的一些回复
这哥们的另外一帖：
http://www.fyjs.cn/bbs/htm_data/27/1012/299601.html
i.e. i.e. is offline
Registered User
Join Date: Dec 2010
Posts: 46
Hi all,
watching this thing for a while, finally decided to comment
Couple of comments, then I will watch the fireworks.
1) This thing may have big (-10%Mac) negative static margin for transonic
speeds. this also should help out with L/D at supercruise speeds.
2) for close coupled big canards/LEX/DeltaWing combo, 1+1+1 > 3. thus on
the planeform side you may will see over all a smaller lifting surface (
higher
onpaper wing loading) than the other two.
3), comment 1)+2) should tells you bit about what the idea is for this
design
. longitudinal wise: try to get good nose pointing ability, good energy
turns
, and good cruise drag, at same time and affordable price.
4) On T-50: T-50's wing-body design relies on channel flow between two big
engine booms. not entirely with out problems, imho. draggy. the name of
the game is always L/D and LEVCON is not necessarily better get your a
better
L/D. and it does have its drawbacks. and LEVCON certainly can not beat
canards
at high AOA nose down pitching moment generation.
5) DSI may not be that bad with supersonic pressure recovery, all depends
on how you design it and where your critical speeds are.
6) This thing may well turn out to have distributed hydraulic/ EHAS.
7) ah those dreaded ventral fins. my guess is lateral stability at high aoa
( and high mach) may be border line with the two smallish VT when they did
their tunnel and cfd studies. and the canards are naturally handicapped
at providing enough rolling moment (main wing aileron is long gone) at
extreme
aoas. (see F-22's famous paddle walk), thus they are out of options. now
unless flight test turns out that that's not critical or they are really
going to get some good TVCs, fins are staying.
which are not necessarily excruciatingly good RCS reflectors.... certainly
the much smaller all moving smaller VT helped balanced out the total side
RCS budget.
over-all very nice job Mr. Yang Wei and Mr. Song. and all the hardworking
folks at 611 and 132, hats off to you guys, merry christmas happy new year
.
Now let's see WS-15 is really what it touts itself to be. | a*****s
发帖数: 6260 | | t*n
发帖数: 14458 | 3 老中的英语么。。。。。
这厮英语怪怪的
【在 a*****s 的大作中提到】
: 这厮英语怪怪的
| B*D
发帖数: 5016 | 4 keyPub doesn't let me post, TNND
他肯定是国人了
lol
我认为他是比较HKC的
【在 t*n 的大作中提到】
: 那个叫i.e.的网友在米国从事航空工业的
: 从以往在飞扬的帖子看来是专业人士
: 而且工业经验很丰富
: 不知道他上不上买卖提
: http://www.fyjs.cn/bbs/htm_data/27/1101/301072.html
: http://forum.keypublishing.co.uk/showthread.php?t=105427&page=19
: 同一主题还有他的一些回复
: 这哥们的另外一帖：
: http://www.fyjs.cn/bbs/htm_data/27/1012/299601.html
: i.e. i.e. is offline
| t*n
发帖数: 14458 | 5 也许有时候业内的KC会红一些
象俺就觉得自己干的这个行当米帝也没什么
keyPub doesn't let me post, TNND
他肯定是国人了
lol
我认为他是比较HKC的
【在 B*D 的大作中提到】
: keyPub doesn't let me post, TNND
: 他肯定是国人了
: lol
: 我认为他是比较HKC的
|
|
