2007年11月9日 · The folding wing tips on the XB-70 were mainly designed to increase directional stability during high-speed flight. The wing tips could be commanded to three positions: UP, half (25 deg. on AV-1, 30 deg. on AV-2) and DOWN (65 deg. on AV-1, 70 deg. on AV-2). Air Vehicle-1 has 0 deg. wing dihedral, Air Vehicle-2 had 5 deg. wing dihedral, hence ...

2015年7月9日 · The XB-70 was test flown and retired more than 3 years before the T-4 first flew. Dimensionally it was about 30% larger with double the wing area and weighed almost 250,000 lbs more than the T-4 at max takeoff weight. The US realized the folly of the high altitude, high speed bomber early on as the XB-70 was cancelled before it had even flown.

2006年12月6日 · The goal for the XB-70 program in it's final form was to demonstrate that a 500.000 lb frame could sustain M3 cruise at 70.000 ft. Remember, it was a project that had initially started as a full production program to develop and build a B-52 successor but was eventually stripped down to an experimental project. True it remained a project "to ...

2015年10月5日 · There is a book called "Valkyrie North Americas Mach 3 Super Bomber"(Specialty Press). By Dennis R Jenkins and Tony R Landis, ISBN 9781580071307. In the book there are pictures of the XB-70 with NASA on the tail. I have the book at home, I am working away from home at the moment. I can have a look for you when I get back on Wednesday. …

2004年10月15日 · The XB-70 had a bomb bay forward of the engines. The engine duct work wrapped around it. The doors would slide backwards instead of opening like a clamshell. I am curious if the test program ever progressed to doing any test drops. It has long been the showpiece of the, now titled, National Museum of the United States Air Force.

2020年11月24日 · Stitch wrote:I think that is was more an attempt by North American Aviation to save the XB-70 program once Soviet high-altitude SAMs negated the primary mission of the airframe (high-altitude, high-speed penetrator) by trying to give it a new, unique mission profile. This sounds like all the makings of the sales department.

This angle shows why the XB-70A Valkyrie was unofficially nicknamed 'Cecil' by her test crews after a children's tv cartoon character 'Cecil the Sea-Sick Sea Serpent'. - Photo taken at Dayton - Wright-Patterson AFB (Wright AFB) (DWF) [CLOSED] in Ohio, USA on February 6, 1987.

2006年12月10日 · The XB-70 uses an electrical throttle system, not an electronic engine control. In the initial design of the B-70, a conventional mechanical linkage between the cockpit and engines was contemplated.

2008年6月17日 · I own a few books about the XB-70 Valkyrie, and in at least two of them I get conflicting information. One says that the B-70 was fitted with a variable-geometry inlet somewhere along the development process (after the contract was awarded to the B-70) obviously implying the inlet was originally fixed. The other states that the B-70 had ...

2014年3月22日 · Although some observers wondered if the Air Force was being entirely truthful about the XB-70's top speed, it was finally determined that too-thick paint caused by several re-paintings (in order to pretty the plane up for various VIPs) was being cracked as the Valkyrie flexed in flight, and was then torn away by the airstream.