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general_kalle
02-15-2007, 03:23 PM
so here comes another "not neccecary" tread.
just curiusity

why did the americans call their planes P...
eg. P51 p38 p39 p36 p63 p47 p400 etc.

p for fighter? pfighter..no
p for plane? plane. maybe
why??

NetDaemon
02-15-2007, 03:28 PM
P=Pursuit, later changed to F=Fighter, right before the Korea war I believe.

berg417448
02-15-2007, 05:17 PM
And in case you are interested:

The designation system used by the USN was different from the one adopted by the U. S. Army, in that not only the function of the aircraft but also its manufacturer was indicated.
(A similar system was used by the Japanese Navy.)

Designations explained:

1.One or two function letters. The F4F was a Fighter, the TBM was a Torpedo Bomber, the SB2C a Scout-Bomber.

2.A sequence number, indicating that the aircraft was the nth one with this function built by the manufacturer. The number 1 was not written. For example, fighters built by Grumman for the USN were labeled: FF, F2F, F3F, F4F,

3.A letter indicating the manufacturer. The F4F was built by Grumman, the F4U was built by Vought, the F4B built by Boeing.

4. A dash.

5. A number indicating the subtype. The designation F4U-4 indicates that the aircraft is the fourth subtype of the F4U.

Akronnick
02-15-2007, 08:52 PM
The P for Pursuit became F for Fighter in 1947 with the creation of the United States Air Force.

Types in service at that time (P-51, P-80, P-82, and others) were redesignated F-51, etc.

This is also when the U.S. National insignia acquired the red stripe.

In 1962, under the orders of Secretary of Defense Robert McNamara, the Army, Navy and Air Force combined their systems which was based largely on the USAF system. Navy types like the A4D, F4H, and F8U became the A-4, F-4, and F-8 respectively. The Air Force designation for the F-4 was originally F-110, but the new system was put into place before the Air Force Phantom was widely deployed.

The designation for the F-117 was chosen after 1962, but using the old system as a security measure. The designation F-19 was never applied to any (publicly acknowledged) American Aircraft. F-13 was not used because Pilots are a superstitios lot.

general_kalle
02-16-2007, 04:55 AM
okay thanks . interesting.

so what does YP80 then mean? why pusuit 80 or what http://forums.ubi.com/groupee_common/emoticons/icon_rolleyes.gif

major_setback
02-16-2007, 05:04 AM
Originally posted by general_kalle:
okay thanks . interesting.

so what does YP80 then mean? why pusuit 80 or what http://forums.ubi.com/groupee_common/emoticons/icon_rolleyes.gif

I think the Y's were experemental/trial aircraft, or ones not yet deployed as combat aircraft.

Red_lightning1
02-16-2007, 05:18 AM
X is for Experimental e.g. XP-49

Y is for Prototype (Provisional field testing) e.g. YP-80

ddpairborne59
02-16-2007, 01:01 PM
Interesting, thanks for the lesson guys!

Cajun76
02-16-2007, 08:11 PM
Numbers were also given to projects that never went forward, or were terminated. The XP-72 was a monster version of the P-47, radical enough to get a new number. Two were built. Project cancelled.

This is a great site to see all the diffent US a/c that were developed over the years.

http://www.nationalmuseum.af.mil/research/aircraft/index.asp

XyZspineZyX
02-16-2007, 09:14 PM
"P" comes from the US Army in the '20s

Congress was not likely to spend money on "offensive" fighter (or 'scout') aircraft at the time

The US Army tricked Congress. They called their fighters 'Pursuit' planes, because the story went that they were a defensive measure against bombers from another country, rather than an offensive weapon that could be used for aggression. The idea was that it was OK to spend for National Defense, but Congress would not likely allocate funds for aircraft that were not primarily defensive in nature. So the Army got their money and got their fighters, they were just called something else

luftluuver
02-16-2007, 09:30 PM
Designations Of U.S. Military Aero Engines
http://www.designation-systems.net/usmilav/engines.html

American Aircraft Designation Systems and Names
http://rwebs.net/avhistory/designations.htm

Japanese Aircraft Designations 1939-1945
http://rwebs.net/avhistory/acdesig/japanese.htm

Other neat stuff on this site, so take a tour.

major_setback
02-17-2007, 03:37 AM
Originally posted by Cajun76:
Numbers were also given to projects that never went forward, or were terminated. The XP-72 was a monster version of the P-47, radical enough to get a new number. Two were built. Project cancelled.

This is a great site to see all the diffent US a/c that were developed over the years.

http://www.nationalmuseum.af.mil/research/aircraft/index.asp

Wow! there are some fantastic pictures on that site. Where it says 'Download the full image' you only have to click on that link to see the bigger picture. Many, many good pictures there. Here's some examples (I uploaded to photobucket in case linking won't work):

http://i4.photobucket.com/albums/y129/major-setback/051122-F-1234P-015.jpg

http://i4.photobucket.com/albums/y129/major-setback/051122-F-1234P-023.jpg

Cajun76
02-17-2007, 03:51 AM
Originally posted by major_setback:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Cajun76:
Numbers were also given to projects that never went forward, or were terminated. The XP-72 was a monster version of the P-47, radical enough to get a new number. Two were built. Project cancelled.

This is a great site to see all the diffent US a/c that were developed over the years.

http://www.nationalmuseum.af.mil/research/aircraft/index.asp

Wow! there are some fantastic pictures on that site. Where it says 'Download the full image' you only have to click on that link to see the bigger picture. Many, many good pictures there. Here's some examples (I uploaded to photobucket in case linking won't work):

</div></BLOCKQUOTE>

I've spent many an hour just reading, looking and d/l pics of cool a/c at that site. 6 months ago it had a better, user friendly format, with all the pics linked individually on each page with the info. Now it's been "Updated" http://forums.ubi.com/groupee_common/emoticons/icon_rolleyes.gif