HDTenEightyP/NetNews huggingface dataset:
From: knutson@mcc.com (Jim Knutson)
Newsgroups: rec.aviation.military
Subject: Query about the FSX
Date: 26 Jan 93 20:24:12 GMT
Organization: MCC, Austin, Texas
Originator: knutson@urbino.mcc.com

I have recently become interested in the history and current state of
the FSX.  Can anyone shed some light on the subject.  Even references
would be fine.

Thanks
-- 
Jim Knutson                                                | |
knutson@mcc.com                                         --=oOo=--
cs.utexas.edu!milano!knutson                               +
Wk: (512) 338-3362                                      Check Six!
Newsgroups: rec.aviation.military
From: hagood@sabre.den.mmc.com (Dave Hagood)
Subject: Re: Most Powerfull Gun ? (Was The Gattling Gun)
Organization: Martin Marietta Astronautics Group
Date: Fri, 22 Jan 1993 18:56:23 GMT

In article <C17tCn.4HA@acsu.buffalo.edu>, v111qheg@ubvmsd.cc.buffalo.edu (P. VASILION) writes:
|> >: I know that the GAU-8 is a very powerfull gun but I am not sure that
|> >: its the most   powerful (Single) Gun. The German Hs-129 mounted a long
|> >: barreled 75mm AT Gun which  would stall the Aircraft on the second  or
|> >: third shot! I know that the B-25H also  mounted a 75mm Howitzer
                                  ^^^^^
|> >: (converted but basically low pressure) in the nose with   equally
|> >: detrimental affects to air speed. I know of rumorse that the AC-130s
|> >: mount  a 105mm weapon but this is side firing.     I will concede that
|> >: the GAU-8 is the most powerfull gun in terms of KE on target  in 10
|> >: seconds (what is the maximum burst from an A-10 anyway). But single
|> >: shot no way.
|> 
|> 	B-52 with a 75mm howitzer? Never heard of this. What is your reference?


	B-25 with 75mm howitzer yes, B-52 with 75mm howitzer no.  As for a 
reference, the "Wings" episode on the B-25 shows some footage of a howitzer
equipped B-25 firing the beast.

	Also, my dad flew in one when the howitzer was fired.  He said it was
pretty obvious when the howitzer fired; he'd feel a pretty good jolt from the
airframe, all the way back in his tail-gunner position.

-------------------------------------------------------------------------
									|
David M. Hagood			Martin Marietta Astronautics Group	|
									|
Voice:  (303) 977-9657		When in danger, or in doubt,		|
E-mail: hagood@den.mmc.com	Run in circles, scream and shout.	|
Fax: (303) 977-1530							|
									|
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     static char *disclaimer = "My opinions, not Martin Marietta's."    |
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Newsgroups: rec.aviation.military
From: viking@iastate.edu (Dan Sorenson)
Subject: Re: Gatling/Vulcan/Chain Guns
Organization: Iowa State University, Ames IA
Date: Wed, 27 Jan 1993 11:05:08 GMT

edhresko@hresko.eos.ncsu.edu (ERIC DAVID HRESKO) writes:

>	As a matter of fact, the chain gun concept was developed by an engineer
>at Hughes who wanted to incorporate motorcycle parts with a gun.  The chain on
>the prototype was a motorcycle chain.

	A previous message mentioned industrial chain.  Having more than a
passing familiarity with the two, the motorcycle chain is more likely to
be used as it has a higher tensile strength, is less prone to stretching,
and is manufactured to far closer tolerances.

	Just an ambiguity that I thought might be worth mentioning.  I
wouldn't trust a true industrial chain in any critical application.

< Dan Sorenson, DoD #1066 z1dan@exnet.iastate.edu viking@iastate.edu >
<  ISU only censors what I read, not what I say.  Don't blame them.  >
<     USENET: Post to exotic, distant machines.  Meet exciting,      >
<                 unusual people.  And flame them.                   >
Newsgroups: rec.aviation.military
From: jem3@pyuxf.uucp (25312-mc killop)
Subject: B-25s and B-52s
Organization: Bellcore, Livingston, NJ
Date: Fri, 22 Jan 93 17:24:49 GMT

In article <1993Jan22.152626.9302@nwnexus.WA.COM> pyotr@halcyon.com (Peter D. Hampe) writes:
>megazone@yoyodyne.WPI.EDU (MegaZone) writes:
>
>During WW2 (the Big War, everybody was in it) in the South Pacific
>USAAF General Kenny (sp?) troops did field modifications to their
>B-25 Mitchell Medium Bombers that did make them much more effective
>in their role in anti-shipping attacks.  Four externally mounted,
>forward firing .50 cals added to the projectile weight on target.
>Eventually one enegentic armouror stripped the non-essential parts
>off a field artilary peice and mounted it in the nose.  One shot
>but what a shot!
>
>This field mod was picked up and some factory modifications were
>made.  (There was a war on ...)
>
>As to the B-52 HEavey bomber, I recall that one variant may have
>had a 20 mm gun in the tail position.
>
General George Kenney was Commanding General of the Fifth Air Force
and later the Far East Air Forces (Fifth and Thirteenth Air
Forces) in the Southwest Pacific.  The mod was made by Major Pappy 
Gunn, a legendary figure.  Gunn sent someone back to North American 
and after much hassle (that's another story), NA produced the B-25H.  
The H-model had:

  - Four fixed forward firing 50 caliber (12.7 mm) machine guns in the 
    nose
  - One fixed forward firing 75mm cannon in the nose
  - Four fixed forward firing 50 caliber machine guns, two on each side 
    beneath the cockpit
  - Two 50 caliber machine guns in an electrical turret behind the
    cockpit
  - Two hand-held 50 caliber machine guns in the waist, one on each
    side
  - Two hand-held 50 caliber machine guns in the tail

All told, fourteen 50 caliber (12.7 mm) machine guns plus one 75mm 
cannon in the nose.  If the top turret was aimed at 12 o'clock, you 
could bring ten machine guns and the cannon to bear on a target.  Some
pilots got so good they could stand off from the target and use the
cannon as a howitzer to lob shells on the target.


As far as the B-52 is concerned, I believe some models had four
20mm cannons in the tail.
Organization: Sponsored account, Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.aviation.products
Date: Sat, 23 Jan 1993 09:12:53 -0500 
From: Jeffrey Dunkle <jd5f+@andrew.cmu.edu>
Subject: Re: peltors 7004, marv golden
Distribution: usa

Excerpts from netnews.rec.aviation.products: 21-Jan-93 Re: peltors 7004,
marv golden by Robert Withrow@rwwa.COM 
> What *are* those earmuff things for, anyway?

I've ordered 3 headsets from Marv and gotten these "cotton ear cup
covers" with each set.  They do fit the ones i bought and what they do,
at least for me, is put a cotton layer between your skin and the vinly
ear cup....keeps them from making you sweat....they're great.

Jeff Dunkle
Newsgroups: rec.aviation.products
From: joseph@panix.com (Joseph R. Skoler)
Subject: Wanted (please):  used headset for first time (student) buyer
Organization: Panix Public Access Internet & Unix, NYC
Date: Sat, 23 Jan 1993 14:13:24 GMT


I'm ready to solo, and I've finally given in to the fact that a headset would
be nice.

I'd like to find a used one, so as to cut down on the cost.

Anyone recently move up to bigger and better and have one lying around?

Thanks,


 Joseph R. Skoler

-------------------------------------------------------------------------------
|  Preferred:  joseph@kc2yu.panix.com                                         i
|     BITNET:  skohc@cunyvm.bitnet                                            |
|   INTERNET:  ak526@cleveland.freenet.edu                                    |
|   AMPR NET:  kc2yu@kc2yu.ampr.org  [44.68.32.56]  144.91 & 145.59 Mhz, NYC  |
|       PBBS:  kc2yu@nn2z.nj.usa.na                                           |
-------------------------------------------------------------------------------
From: news@sunfse.ese.lmsc.lockheed.com (news)
Newsgroups: rec.aviation.products
Subject: Re: PTT Operation
Keywords: PTT, Intercomn
Date: 21 Jan 93 23:38:58 GMT
Organization: LMSC, Sunnyvale

From: claude@leadse9.UUCP (Claude Goldsmith)
About re-wiring a commercial PTT switch to leave the mic hot all the
time...

>To enable the transmitter, the Ring and Ground are shorted together.
>At the same time, the incoming mic signal is connected to the outgoing
>mic signal. These are the two sides of the single switch. You want
>one to be switched, but the other may as well happen all the time. So
>you figure out which is which, and either jumper those connections on
>the switch, or disconnect the wires and solder them together. 

You might not want to do this if you fly with more than one headset
conected to your radio stack.  The problem is that after making the
above modification, all of the microphones will be wired in parallel
with each other whenever anyone presses their PTT switch.  If all of
the microphones are identical, you may only notice a slight to
moderate reduction in transmitter modulation level along with the
"feature" of transmitting whatever any of the other mic's happen to
pick up while the button is pressed.  In some cases, where different
brands or models of headsets are mixed, one or more of the microphones
may not work at all when in parallel with another.

Claude Goldsmith, CFII <claude@sunfse.ese.lmsc.lockheed.com>
 twisted-pair (408) 742-7514	      | Opinions expressed are not 
 on the air - WB6UOO                  | necessarily those of my 
 through the air - Mooney N6416U      | employer.
From: ben@bailey.UUCP (Ben Bailey)
Subject: Re: Choosing PTTs and flight computers
Newsgroups: rec.aviation.products
Date: 20 Jan 93 23:19:41 GMT
Distribution: na
Organization: Ben Bailey's Home..Tampa Fl.

I just tried two models - The Navtronic Explorer and Sporty's E6B Electronic.
I like the E6B better, and will be returning the Navtronic.

I use to have a TI with drop in rom chips that allowed me to do RNAV.  I 
really liked that feature, so I thought the Explorer, which advertised
RNAV, would be a good one.  I was very disappointed to find the
following limitation on the RNAV portion for the Explorer:

	This program enables you to calculate the distance and
	course between two waypoints addressed by the same
	VOR. 

The TI I used to have would allow you to enter as many VOR waypoints
as you wanted, so that you could then take a reading from VOR 1, 
another reading from VOR 2, and it would give you your position, 
mh, winds, gs, etc.  This was a much better system!

Alas, I don't know of any calculator that offers these features 
now.  Does anyone know of one?

Ben
--
Ben Bailey                 ben@bailey.uucp -- bailey!ben@uunet.uu.net
12210 Shady Forest Dr.     ben@bailey.tscs.com
Riverview, Fl. 33569       -- The main thing is to keep the main
813-677-5021                  thing the main thing.  Mainly.
From: stadler@Apple.COM (Andy Stadler)
Newsgroups: rec.aviation.products
Subject: Re: PTT Operation
Keywords: PTT, Intercom
Date: 26 Jan 93 23:59:59 GMT
Distribution: usa
Organization: Apple Computer Inc, Cupertino, CA

In article <d=+s0jm@quantum.qnx.com> aboyd@quantum.qnx.com (Andrew Boyd) writes:
>In article <llr4jaINNpbd@exodus.Eng.Sun.COM> gblanck@vermont.Eng.Sun.COM 
>writes:
>>The one PTT that I've tried seems to "isolate" the mic thats
>>plugged in to it when the button isn't pressed- which makes it
>>impossible to communicate over the intercom...
>>
>>Do all PTT's isolate the mic in this way? Are there any that
>>can easily be switched to passthrough the microphone and only
>>use the switch to activate the PTT? 
>>
>>Has anyone else had this problem?
>
>Yup, I've seen this with the PM1000 ICS.  They included instructions
>on how to modify various PTT's to allow voice to get thru all the
>time.  A teensy soldering job does it.  Send me mail if you need
>specifics (which are at home right now).


All of this talk of modifying PTT's seems like the hard way.  The PTT's are
designed to plug in AFTER the intercom.  Instead of this:


              -------     ------------
    MIC  -----| PTT |-----|          |---\
              -------     | intercom |    \   Y
              -------     |          |    / connector -------  RADIOS
    MIC  -----| PTT |-----|          |---/
              -------     ------------

You should plug everything together like this:

              ------------   -------
    MIC  -----|          |---| PTT |---\
              | intercom |   -------    \    Y
              |          |   -------    / connector -------  RADIOS
    MIC  -----|          |---| PTT |---/
              ------------   -------

Once you do it like this, you don't have to modify the PTT's.  They now
serve a specific purpose - not only do they key the transmitters, but they
also connect ONLY the keyed mic to the radio input.  This has two advantages:
Only the "talker" goes out on the radio (reducing "background chatter"), and
you don't get the problems sometimes associated with connecting multiple mics
to the input (this is especially useful with mismatched mics).

Both intercoms I've owned specifically had the pilot and copilot mic outputs
seperated, specifically so you could do this.  Perhaps the PM1000 combines
them internally - if so, I believe that's a design disadvantage.

--Andy     stadler@apple.com
From: lloydo@NAD.3Com.COM
Newsgroups: rec.aviation.products
Subject: Where to Find...
Date: 28 Jan 93 21:19:59 GMT
Reply-To: lloydo@NAD.3Com.COM
Distribution: usa
Organization: 3Com Corp


I'm looking for a product to restore the Imron paint on my Tiger.  I've been informed that products called T-11 Pretreatment and T-500 paint sealant with PTFE are what I should use on the paint.  These products are made by a company called FASTWINGS.  I have been unable to locate these products in the San Jose, CA area.  I would like pointers for a source of these products locally or mailorder.  Short of that, could someone tell me where the manufacturer is of these products?  What state or city are they m




ade?

Thanks for your help,
Lloyd
From: scottcr@wkuvx1.bitnet
Newsgroups: rec.aviation.products
Subject: Re: PTT Operation
Date: 21 Jan 93 17:51:31 CST
Organization: Western Kentucky University, Bowling Green, KY

In article <1993Jan20.202848.24866@watson.ibm.com>, ggr@watson.ibm.com (Greg Rose) writes:
> In article <llr4jaINNpbd@exodus.Eng.Sun.COM> gblanck@vermont.Eng.Sun.COM writes:
> 
> Basically, the switch unit is a double throw type, that means that
> they get to make or break two separate contacts at the same time. God
> forbid that they should leave one side of the switch unused!
> 
> From memory, the tip of the plug carries ground, the "ring" carries
> the transmitter enable, and the shaft carries the microphone signal. I
> may well have tip and shaft mixed up, but a minute or two with an
> Ohm meter will soon tell you which is which.
> 
> To enable the transmitter, the Ring and Ground are shorted together.
> At the same time, the incoming mic signal is connected to the outgoing
> mic signal. These are the two sides of the single switch. You want
> one to be switched, but the other may as well happen all the time. So
> you figure out which is which, and either jumper those connections on
> the switch, or disconnect the wires and solder them together. 
> 
> Bingo! you have a PTTBTA (Push To Transmit But Talk Anytime) switch!

Actually, the tip is key (to ground)
          the ring is mic audio (this may or may not be interupted,
          depending upon the flavor of PTT you have.)
          the sleeve is ground (common for both mic audio and PTT)

I use a microswitch ty-wrapped to my yoke, with a (2 conductor)
coil type cord connecting it to the instrument panel.  This is
a SPST (single pole-single throw) switch essentially in parallel
with the mic jack contacts.  It works very well, is less bulky
than the strap-on type.  This is about the best I've seen
without going to the in the yoke type, which is nice.
-- 
Chris Scott,  C/E Public Radio,  Western KY Univ,  (502) 745-3834
SCOTTCR@WKUVX1.BITNET      fx off: 745-2084     fx hm: 781-1232
From: gblanck@vermont.Eng.Sun.COM (Greg Blanck)
Newsgroups: rec.aviation.products
Subject: Re: PTT Operation
Date: 21 Jan 1993 22:33:52 GMT
Organization: Sun Microsystems, Inc.
Distribution: world
Reply-To: gblanck@vermont.Eng.Sun.COM
NNTP-Posting-Host: vermont

In article s0jm@quantum.qnx.com, aboyd@quantum.qnx.com (Andrew Boyd) writes:
> >Has anyone else had this problem?
> 
> Yup, I've seen this with the PM1000 ICS.  They included instructions
> on how to modify various PTT's to allow voice to get thru all the
> time.  A teensy soldering job does it.  Send me mail if you need
> specifics (which are at home right now).
> 
> ----
> #include <std.disclaimer>

Hmmm. I wonder if the PS engineering intercoms are the only
ones with this "problem"? I'm encountering this with the PM2000
(yes, it comes with PTT modification instructions also...).
Do other intercom's have multiple/isolated pilot/copilot mic
circuits & PTT inputs? 

I was hoping to avoid hacking into a brand new PTT switch to
solve the problem; but it looks like we'll just go with a cheap
PTT and dig in with the soldering iron!

-Greg
From: rex@eng.umd.edu (Rex Root)
Newsgroups: rec.aviation.products
Subject: Re: Wanted: Inexpensive Handheld
Date: 25 Jan 1993 14:31:48 GMT
Organization: Project GLUE, University of Maryland, College Park
NNTP-Posting-Host: frob.eng.umd.edu

In article <93020.36694.L697187@LMSC5.IS.LMSC.LOCKHEED.COM> L697187@LMSC5.IS.LMSC.LOCKHEED.COM writes:
>I'm looking for an inexpensive handheld.  Used is fine.  New is fine.
>Does anyone have any recommendations on which handheld is the best
>(everyone has their own opinion I'm sure)?  Does anyone have one in
>good working condition that they want to sell?
>
>Scott (keep me away from the radio shack) VanArtsdalen
>PP-ASEL

If you're looking for just a comm-radio ( no nav stuff) you may consider
the Del-Com. It has thumb wheel frequency setting as apposed to a key
pad and lacks a liquid display. Very basic, but still gets the job done.
I've seen them advertised for as low as 270 dollars.

	*******************************************************

   Rex L. Root Jr.  PP-ASEL-G              "I only fly inverted on purpose."   
   Electrical Engineering Dept.
   University of Maryland                               ()   ()
   College Park, Maryland  20742                  _______\___/_______
   e-mail: rex@eng.umd.edu                            |   ( )   |
   voice: (301) 405-3688                         ---------------------
   FAX: (301) 314-9281                                     T
From: elmore@rap.ucar.edu (Kim Elmore)
Newsgroups: rec.aviation.products
Subject: Re: PTT Operation
Keywords: PTT, Intercom
Date: 27 Jan 93 05:52:23 GMT
Distribution: usa
Organization: NCAR, Research Application Program

In article <77606@apple.apple.COM> stadler@Apple.COM (Andy Stadler) writes:

>Both intercoms I've owned specifically had the pilot and copilot mic outputs
>seperated, specifically so you could do this.  Perhaps the PM1000 combines
>them internally - if so, I believe that's a design disadvantage.

	Gee, I missed out on the begining of this thread, but I have a
PM1000 in my airplane (a 1946 Cessna 140) an deach micm is separate.
I modified my PTT switch as has been already discussed such that the
mic audio was always available to the intercom.  But, the PM1000 keeps
each mic separate: when I activtae the PTT switch, I cut off whatever
anyone else in the right seat is saying and only my audio goes over
the air.  Ditto for when the PTT on the right side is used: whatever
the left seat is saying is cutoff and only the mic with the activated
PTT goes over the air.  What if we press *both* PTTs?  Well, if the
panel switch is in the ISOlate position, only the pilot can activate
the transmitter, but I haven't tried it in the CREW position.  Maybe
they both would go out over the air then...


			Kim Elmore, [N5OP, PP ASEL/Glider 2232456]
*  _._. __._ _.. _.._ _.. . _. ..... ___ .__. _. ..... ___ .__. _.. _.._ _._  *
*    Said by NQ0I while working on his shack:                                 *
*		"All these *wires*!  Why do they call it `wireless'!?"        *
*  _._. __._ _.. _.._ _.. . _. ..... ___ .__. _. ..... ___ .__. _.. _.._ _._  *
Newsgroups: rec.aviation.products
From: chris@ccscae.Columbia.NCR.COM (Chris A. Harrison)
Subject: GPS question
Organization: NCR Corp, E&M-Columbia, Columbia, SC
Date: Fri, 22 Jan 93 13:04:57 GMT

In the December issue of the "AOPA Pilot", they do a review of several
GPS receivers (Garmin, Magellan, Sony, Trimble).  Over on pg. 53 in
the same issue, there's an ad for the GPS NAVIGATOR from Evolution, Inc.
Looking at the price/feature comparison, it seems to have a lot of bang
for the buck (1 yr. free database updates, NiCad battery, Longest Runway,
NavCom info, Intersections, Victor & jet airways, MEAs, Automatic Flight 
Planning, etc..).  All of this in a package for $849 + $19.95 shipping
(which includes initial shipment plus all updates).  

Does anyone know anything about this particular model?  This ad is the
first I've heard about it.  Any additional information will be appreciated.

Thanks in advance.

cah
From: dick.zeitlin%acc1bbs@ssr.com (Dick Zeitlin) 
Newsgroups: rec.aviation.products
Subject: GPS question
Date: 24 Jan 93 12:05:00 GMT
Distribution: world
Organization: Advanced Computer Concepts BBS, New Rochelle, NY 914-654-1981
Reply-To: dick.zeitlin%acc1bbs@ssr.com (Dick Zeitlin) 

CAH> .In the December issue of the "AOPA Pilot", they do a review of several
   > .GPS receivers (Garmin, Magellan, Sony, Trimble).  Over on pg. 53 in
   > .the same issue, there's an ad for the GPS NAVIGATOR from Evolution, Inc.
   > .Looking at the price/feature comparison, it seems to have a lot of bang
   > .for the buck (1 yr. free database updates, NiCad battery, Longest Runway,
   > .NavCom info, Intersections, Victor & jet airways, MEAs, Automatic Flight
   > .Planning, etc..).  All of this in a package for $849 + $19.95 shipping
   > .(which includes initial shipment plus all updates).

CAH> .Does anyone know anything about this particular model?  This ad is the
   > .first I've heard about it.  Any additional information will be appreciate

I believe it's still vaporware.  I know several people that contacted
the company recently, and were told that the ads appeared a bit
prematurely, and that it'd ship 'real soon now.'

        D/

---
 . QMPro 1.0 41-3345 . Bring back A-N airways!!    Dick.Zeitlin%acc1bbs@ssr.com
                                                                                                               
Newsgroups: rec.aviation.products
From: zwork@starfighter.den.mmc.com (Michael Corvin)
Subject: attn. Gary Martin
Organization: Martin Marietta Astronautics Group
Date: Fri, 22 Jan 1993 16:56:01 GMT

Gary - thanks for the HP stuff.  I tried to mail to gmartin.f15@mhs.elan.af.mil
but the daemon at eurynome.elan.af.mil bounced it back.

'scuse the party line call folks... 

-----------------------------------------------------------------------------
Michael Corvin 	      PP-ASEL, PP-G		zwork@starfighter.den.mmc.com
just another spaced rocket scientist at    Martin Marietta Astronautics Group
-----------------------------------------------------------------------------
===============    My views, not Martin Marietta's   ========================
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