WRAP Launch of experimental aircraft - ADDS post flight briefing

AP Archive
AP Archive
59 بار بازدید - 9 سال پیش - (28 Mar 2004) NASA LAUNCH
(28 Mar 2004) NASA LAUNCH  2 280304N



1. B-52 plane with X-43A hypersonic vehicle, with booster rocket attached to right wing, taking off
2. View from below B-52 in flight, booster rocket carrying X-43A visible under right wing
3. View from camera aboard B-52 of X-43A mounted on nose of booster rocket, flaps moving for test
4. View from camera aboard B-52 of booster rocket flaps moving for test
5. Wide shot as booster and X-43A detach from B-52, then booster ignites and speeds away carrying X-43A
6. Wide as booster carries X-43A to higher altitude
7. View from camera aboard Navy aircraft showing separation of booster rocket and X-43A
8. SOUNDBITE (English): Lawrence Huebner, X-43 Lead Propulsion Engineer
"What we demonstrated today, is something that we''ve been working on the ground for over 40 years, and what we basically can say is we demonstrated that the technology that was developed on the ground works. Flight is reality."
9. Wide shot of everyone in Edwards Air Force Base briefing room applauding
10. SOUNDBITE (English): Lawrence Huebner, X-43 Lead Propulsion Engineer
"It''s been an outstanding, record breaking day, it really has. Our engine experiment was very nominal, very much like we expected to see based on our analysis, our ground data that we got in wind tunnels. As Grif (other member of mission team) said we did get proper inlet start, and we had good ignition and combustion all the way from fuel-lean to fuel-rich, back to fuel-lean. We basically, based on the preliminary data, and here''s the key thing, based on the preliminary data that we have, we did achieve positive acceleration while we were climbing."
11. Cutaway of NASA officials during briefing
12. SOUNDBITE (English): Joel Sitz, Dryden X-43 Project Manager
"The ramjet / scramjet is the holy grail of aeronautics in my mind. If you go from ground from space, you need to use a ramjet / scramjet if you''re going to do it in the most efficient way you can. And so I think this technology will find its way into future vehicles and integrate nicely."
13. Wide cutaway of briefing

STORYLINE:

Three years after its first test flight ended in an explosion, NASA successfully launched an experimental jet capable of reaching speeds approaching 5,000 miles (8,000km) per hour.

The unpiloted X-43A made a 10-second powered flight and then went through some twists and turns during a six-minute glide before it was allowed to plunge into the Pacific ocean.

Flight engineer Lawrence Huebner said preliminary data indicated the X-43A reached a maximum speed of "slightly over Mach 7," or about 5,000 mph (8,000 kph). It had been boosted to about 3,500 mph (5633 kph) by a rocket, but he said no "air-breathing" jets had ever before reached Mach 7, seven times the speed of sound.

NASA built the needle-nosed jet under a US 250 (m) million dollar programme to develop and test an exotic type of engine called a supersonic-combustion ramjet, or scramjet.

In theory, the air-breathing engine could propel an airplane on around-the-world flights that would take several hours.

The Department of Defence also is working on the technology, which it''s eyeing for use in bombers that could reach targets anywhere on the globe with deadly immediacy.

The 12-foot (4-metre), 2,800-pound (1270-kg) X-43A was mounted on a Pegasus rocket booster, which was attached under the right wing of a B-52 bomber that took off from Edwards Air Force Base in the high desert.



The vehicle''s performance prompted a round of applause at the Dryden control center. "It''s been an outstanding, record-breaking day," Huebner said.




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9 سال پیش در تاریخ 1394/04/30 منتشر شده است.
59 بـار بازدید شده
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