Lockheeds f-19 stealth fighter, page 3
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reply posted on 18-4-2005 @ 05:55 AM by ghost
Originally posted by blythe
perhaps the northrop design that competed against the F-117 was the mystery designation.

the airforce had two designs for a stealth plane, one from lockheed and one from northrop. the lockheed design won out at the radar range, thus the northrop design never made it to proto-type. the lockheed design was then made into the have blue aircraft, then eventually into the F-117.

Ben Rich put out a book that is describes this and other things at lockheed. if you are going to talk the talk, it is better to read the books that the people who built the things wrote, than fiction from a best selling author.

still, this doesn't truly answer the question, it just points out that there were two competing designs for the F-117.


Good theory, but you have a problem! The planes that were competeing were part of the XST program. These aircraft were X-planes, not prototypes if the "Stealth Fighter"




Above is the Northrop XST. Below is Lockheed's XST.



Notice, Neither of these aircrafts is the same as the F-117. When the Air Force and DARPA funded the development of these aircraft, their Only goal was to see if they could build a stealth aircraft that would fly. Yes the Senior Trend program that built the F-117A developed from XST/Have Blue, but they were two completely different programs. In fact most of the staff from the Air Force's F-117 program office were not even cleared to have Access to Have Blue! The only real link is that Lockheed transferred the reseach data from Have Blue to its scientists! (You idea was a good one though, I had chased the very same idea once before I came to ATS)

Tim
ATS Director of Counter-Ignorance


reply posted on 27-10-2005 @ 12:34 PM by Shadowhawk
Military aircraft Mission Design Series (MDS) designations, starting in 1962, were initially assigned in an orderly fashion. There have been notable exceptions, especially regaring the system of assigning designations to classified aircraft.

MDS designations are regulated by Department of Defense (DoD) Direction 4120.15, "Designation and Naming Defense Military Aerospace Vehicles," and under the same title for each service: Air Force Joint Instruction 16-401, Army Regulation 70-50, and Navy NAVAIRINST 8800.3A.

Headquarters Air Force Materiel Command Cataloging and Standardization Center (HQ AFMC/CASC) in Battle Creek, Michigan serves as the control point for DoD MDS designators and aerospace vehicle popular names and assigns such designations as requested. Headquarters U.S. Air Force (HQ USAF/XPPE) at the Pentagon in Washington, D.C. administers the MDS Designator Program for the DoD and exercises approval authority for all new MDS designations.

The process for requesting MDS designators is as follows:
The Military Departments must submit a written request for assignment of a distinctive MDS designator as early as possible in the development cycle. Coordinate requests with the Military Department point of contact and CASC as soon as possible to have an MDS designator assigned. CASC will assign and reserve the next available consecutive design number within each basic mission for new vehicles. Do not use MDS designators before approval. NOTE: Air Force agencies must coordinate MDS requests through the applicable system program office (SPO). CASC will assign the MDS designator and transmit the request to HQ USAF/XPPE for processing and approval.

The "X" designation is used to denote piloted, autonomous, or remotely piloted aerospace vehicles designed for testing highly experimental configurations.

About 40 piloted and 26 unpiloted X-planes have been designated, including variations and rebuilt/modified airframes. Arguably there are some aircraft that, by their nature, deserved X designations (such as the D-558-I, D-558-II, M2-F1, M2-F2/M2-F3, and HL-10 to name a few). For other aircraft, a YF designation (Service Test, Fighter) would seem more appropriate, such as the X-32 and X-35 Joint Strike Fighter technology demonstrators.

Some X-designations were assigned to planes that ultimately were not built. Some of these reached the mock-up stage and others were only "paper airplanes," never going beyond the design stage. Occasionally an X-designation was applied to an aircraft before that designation was officially assigned, leading to later confusion when an official MDS was assigned. Examples include the "X-35 Crew Return Vehicle" which was later officially designated X-38, and the "Lockheed Martin X-32 Joint Strike Fighter" concept mock-up which underwent extensive redesign before becoming the X-35 while X-32 was assigned to the Boeing JSF design.

The orderly assignment of numbers is being fouled up by X-planes transitioning to operational platforms. The X-35 became the F-35 Joint Strike Fighter and the X-45 will probably become the A-45 Joint Unmanned Combat Air System.

Classified aircraft have received anomalous "F" (usually "YF") designations even when the aircraft were not fighter planes (i.e. YF-117D TACIT BLUE). Until recently, these were always three-digit designators (such as YF-117A and YF-113G). In the late 1990s, however, a classified prototype was flown as the YF-24.
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