PPRuNe Forums - View Single Post - F-35 Cancelled, then what ?
View Single Post
Old 6th Jan 2014, 17:57
  #4000 (permalink)  
glad rag
 
Join Date: Aug 2007
Location: London, New York, Paris, Moscow.
Posts: 3,632
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Courtney Mil
That's not good.
Neither is

http://timemilitary.files.wordpress....ual-report.pdf

"The program completed two of the eight planned system-level ballistic test series.
-
The first series confirmed the built-in redundancies and
reconfiguration capabilities of the flight critical systems.
The second series indicated that ballistic damage
introduced no measurable degradation in the F-35B
propulsion system performance and that the damage
would be undetectable by the pilot. Ongoing analysis will
evaluate whether these tests stressed the vulnerabilities
unique to ballistic damage to the F35 (e.g., interference
or arcing between 270 Volt, 28 Volt, and signal lines
and or damage to lift fan blade sections).
-
The first test series confirmed Polyalphaolefin (PAO)
coolant and fueldraulic systems fire vulnerabilities. The
relevant protective systems were removed from the
aircraft in 2008 as part of a weight reduction effort. A
Computation of Vulnerable Area Tool analysis shows
that the removal of these systems results in a 25 percent
increase in aircraft vulnerability."

Along with

"The program’s most recent vulnerability assessment showed that the removal of fueldraulic fuses, the PAO shutoff valve,
and the dry bay fire suppression, also removed in 2008,
results in the F-35 not meeting the Operational Requirements
Document (ORD) requirement to have a vulnerability posture
better than analogous legacy aircraft.

There seems there has been quite a lot of both redundancy and survivability sacrificed on the alter of weight saving [from that report].




glad rag is offline