XB-70A Generalities

Question 0

The fuselage center section & multi-spar wings have a skin made of:

Answer 0

Braised stainless steel honeycomb sandwich.

Question 1

The nose section of the XB-70 along with the cockpit and E & E compartment are made of:

Answer 1

Riveted titanium frames & skin with H-11 steel longerons.

Question 2

The wings are welded to which part of the airframe?

Answer 2

The wing root section.

Question 3

The aft fuselage is made of:

Answer 3

Titanium & high-alloy steel.

Question 4

Are all high-pressure fluid line connections brased?

Answer 4

Yes.

Question 5

The wing area (excluding the wing ramp area) is:

Answer 5

6,297.8 sq ft.

Question 6

The wing area (including the ramp area) is:

Answer 6

6,331.3 sq ft.

Question 7

The wing span of the XB-70A is:

Answer 7

105 ft.

Question 8

The airplane AR is:

Answer 8

AR = 1.751

Question 9

The taper ratio (lambda) of the airplane is:

Answer 9

0.019

Question 10

Geometric wing dihedral is:

Answer 10

Dihedral = 0.

Question 11

The root chord of the wing is:

Answer 11

117.76 ft.

Question 12

The tip chord of the wing is:

Answer 12

2.19 ft.

Question 13

The MAC is:

Answer 13

MAC = 78.53 ft.

Question 14

LE sweepback angle is:

Answer 14

65.57 degrees

Question 15

Sweepback angle at 0.25c is:

Answer 15

58.79 degrees.

Question 16

The XB-70A uses ____ for fuel.

Answer 16

JP-6.

Question 17

The engine lubrication oil used is:

Answer 17

MIL-L-9236 (plus an additive).

Question 18

The engine hydraulic oil used is:

Answer 18

GE81406.

Question 19

ADS lubrication oil used in the aircraft is:

Answer 19

MIL-L-7808.

Question 20

Airplane hydraulic fluid is:

Answer 20

HTHF-70.

Question 21

The liquid nitrogen used onboard is:

Answer 21

MIL-N-6011, grade A, Type II.

Question 22

The gaseous nitrogen used onboard is:

Answer 22

MIL-N-6011 grade A, Type I.

Question 23

The GN2 & LN2 used onboard the aircraft is:

Answer 23

MIL-N-6011 grade A, Type I (40%) & MIL-O-27210, Type I (60%).

Question 24

The LO2 used in the airplane is:

Answer 24

MIL-O-27210, Type II.

Question 25

The GO2 used onboard the airplane is:

Answer 25

MIL-O-27210, Type I.

Question 26

The ethylene glycol used in the XB-70A is:

Answer 26

Union Carbide Part No. PM 2251.

Question 27

The anhydrous ammonia used is:

Answer 27

MIL-O-A-445a.