SR-71 Power

• 2 Pratt & Whitney J-58
• Fuel JP-7
• refuel by KC-135Q
• thrust weight 29,750lbs

• Speed Mach 3, 2,189mph
• 85,000ft altitude,17 miles
• range 3,300 miles without flight refueling
• flies in stratosphere
• cruise height 82,000ft Technology
• moveable intake, conical centre-body
• Nothrob astro-internial Navigation system (ANS)
• ceramic lining in afterburner section
• JP-7 also used as coolant and Hydraulic fluid
• Tetraethyl Borane(TEB) ignites fuel during start
• fuel pumps move fuel to keep center of gravity
• uses stability augmentation systems
• ASO tracks up to 300 stars

• wingspan 55ft 7in
• height 18ft 6in
• length 107ft 5in
• weight 60,000-145,000lbs
• 93% titanium alloy

• 2 seat strategic reconnaissance
• high altitude reconnaissance

• take off less than 5,000 ft
• engines pre-heated to 86F
• wheels fold up into fuselage
• Ribbon Parachute used to stop
• lift off at 200knots
• gear in before 300knots

• engine nacelles 900-1,000F White Hot
• cruise temp 800F

• 31 SR-71's made
• Pilots breath 100% oxygen
• id's 64-17950 to 64-17980
• periscope top of cockpit, push into slipstream
• stored at Beale AFB in California
• triple comp. manage flight systems
• wheel 32 ply, Goodyear
• tires nitrogen filled
• pilots can warm hands and heat food on windows
• Pilots should avoid food that gives gas
• change noses for different missions
• wheel 400 or 450psi
• Suit pressure equal 25,000ft
• Nitrogen pressurizes fuel tanks so they don’t collapse
• refuel in 15 or more minutes
• glass 4in thick in cockpit
• tiny iron balls in paint to weaken radar from enemy
• Nitrogen keeps fuel vapor from igniting from heat
• suit used in case SR-71’s pressure fails (SR-71 is pressurized)
• total average speed during career 2,145mph

Sign Veiw

page started 2/27/1999

.