AFFECT OF FUEL SEQUENCING AND LARGE MISSION RESERVES ON FUEL TEMPERATURES

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP81B00879R001000130149-7
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 14, 2016
• Document Release Date: December 13, 2002
• Sequence Number: 149
• Publication Date: April 10, 1964
• Content Type: MFR

Approved F roRelease 2003/02/27: CIA-RDP81 B00 R001000130149-7
OXC-6744-64
Copy-2- ofJ
10 `April 1964
MEMORANDUM FOR THE RECORD
SUBJECT: Affect of Fuel Sequencing and
Large Mission Reserves on Fuel
Temperatures
1. The operational mission profiles contemplated
include instances where fuel reserves at the initiation
,:~f refueling are approaching 15,000 pounds. Since fuel
tank no. 3 is the last tank to be used and no. 5 the
next to last tank to be used, a 15,000 pound reserve
would result in a full no. 3 tank (approximately 10000
pounds) and a partially full no. 5 tank (approximately
5,000 pounds). Just prior to refueling, fuel is
transferred forward to the no. 1 tank for a better low
speed e.g. position, but currently this quantity is
limited to 4,000 pounds to allow for the maximum "g"
capability and, in addition, the system will transfer
first from no. 5 tank until empty. It is evident from
the above that the no. 3 tank remains full throughout
the mission getting progressively hotter unless it is
needed during an emergency condition requiring less
reserve, At this time, it is far too hot to be useable.
2. The probable Lockheed solution will be to
incorporate a manually actuated position on the forward
transfer switch which will allow the fuel from the no. 3
tank to be transferred first regardless of how much fuel
is in the no. 5 tank. Also the maximum transferable
limit of 4,000 pounds will be lifted so that a larger
quantity will be transferred from no. 3 to no. 1 and
subsequently burned.
c;:=_E:`EENTNO..
NO CHANGE IN CLASS
,+,-.(--.LAHSTFOED
r CHANCED TO:
141".' X if VTE't/DATE:
/,U[ H. H1 70-2
s,~c
Aircraft Systems Division
(Special Activities)
Approved For Release 2003/02/ 61 RDP81 B0
This
80q pQ1;00Qj3O149-7;'
25X1A
 Approved For Release /02127: CIA-RDP81 BOO879ROO10004 149-7
ASD/ OSAA
Dist:
1 - ASD/OSA
2 - AD/OSA
3 - D/TECH/OSA
4 - OXC/OSA
5 - ASD/OSA
6 - Chrono
7 - RB/OSA
mvp (10 Apr64)
Approved For Release 2003/02/27 : CIA-RDP81 B00879R001000130149-7