Showing posts with label flight. Show all posts
Showing posts with label flight. Show all posts

2013-05-04

Boeing X-51A WaveRider test flight

Experimental aircraft speeds to more than 3,000 mph in test flight - latimes.com



A lightning-quick experimental aircraft made history when it sped more than 3,000 mph above the Pacific Ocean in a test flight, reigniting decades-long efforts to develop a vehicle that could travel faster than a speeding bullet.

Boeing X-51 - Wikipedia, the free encyclopedia


The Boeing X-51 (also known as X-51 WaveRider) is an unmanned scramjet demonstration aircraft for hypersonic (Mach 6, approximately 4,000 miles per hour (6,400 km/h) at altitude) flight testing. It successfully completed its first powered flight on 26 May 2010 and also achieved the longest duration flight at speeds over Mach 5.[1]

The X-51 is named "WaveRider" because it uses its shockwaves to add lift. The program is run as a cooperative effort of the United States Air Force, DARPA, NASA, Boeing, and Pratt & Whitney Rocketdyne. The program is managed by the Aerospace Systems Directorate within the United States Air Force Research Laboratory (AFRL).[3][4] The X-51 had its first captive flight attached to a B-52 in December 2009.



Boeing: Boeing X-51A WaveRider Sets Record with Successful 4th Flight

A U.S. Air Force B-52H Stratofortress from Edwards Air Force Base released the X-51A from 50,000 feet above the Point Mugu Naval Air Warfare Center Sea Range at 10:55 a.m. Pacific time. After the B-52 released the X-51A, a solid rocket booster accelerated the vehicle to about Mach 4.8 before the booster and a connecting interstage were jettisoned. The vehicle reached Mach 5.1 powered by its supersonic combustion scramjet engine, which burned all its JP-7 jet fuel. The X-51A made a controlled dive into the Pacific Ocean at the conclusion of its mission. The test fulfilled all mission objectives.

The flight was the fourth X-51A test flight completed for the U.S. Air Force Research Laboratory. It exceeded the previous record set by the program in 2010.


2013-04-20

The flow around the butterfly

The Mathematical Butterfly: Simulations Provide New Insights On Flight | Inside Science


The researchers ran three different simulations of this mathematical butterfly, and found that the insect used the forces from teensy whirlpools in the air created during each flap of its wings to create lift. They noticed that the butterfly's flight was bumpy as it moved through the air, with lots of ups and downs as it pushed itself forward. 
There were some surprises in the tiny flows of air surrounding the butterflies. "The flow around the butterfly is much more turbulent than expected," says Yokoyama.

The researchers surmised that the minute bumpiness of the air causes butterflies' signature flit, and also may help protect them against predators – the more they duck and weave, the harder it is to catch them. The research was published earlier this year in the journal Physics of Fluids

High speed video - Painted Lady butterfly (front) - YouTube



High speed video recorded at 3000 fps.
See www.jhuinsectflight.com for more information on Tiras Lin's research project at Johns Hopkins University.


Mathematical butterflies provide insight into how insects fly

Using data from observations of butterfly flight in wind tunnels, the researchers conducted three different types of simulations with their model that were defined by the position and attitude of the thorax: tethered (where the thorax is fixed), prescribed (where the thorax is programmed to move in an expected manner) and free-flight (where the thorax movement is unrestricted). They found that their mathematical butterfly did -- as predicted -- make use of the tiny, swirling vortices that form in the direction of travel during a downward flap, pushing air down and providing lift. However, they also observed that the flow around the butterfly is much more turbulent than expected. This turbulent flow triggers the complex trajectories characteristic to the flights of butterflies that may be one of the strategies by which the insects avoid predators.

Phys. Fluids (1994-Present) - Physics of Fluids

Naoto Yokoyama, Kei Senda, Makoto Iima, and Norio Hirai
Phys. Fluids 25, 021902 (2013); http://dx.doi.org/10.1063/1.4790882 (24 pages)
Online Publication Date: 21 February 2013

2012-06-06

SeatBuddy: AirBaltic's Social Airline Seating System

Passengers allowed to choose who they sit to via Air Baltic 'Seat Buddy' scheme | Mail Online


Make it stop: Passengers on Air Baltic who want peace and quiet will be able to select where they sit

The ‘Seat Buddy’ scheme – the brainchild of north European operator airBaltic – allows travellers to select the ‘type of person’ they sit next to.
Four ‘Flight Moods’ are available: ‘Business Talk,’ ‘Easy Chat,’ ‘Work’ and ‘Relax.’
Thus someone keen to concentrate on that important presentation can ask to be placed next to a kindred spirit in the ‘Work’ category – and with it, guarantee a flight free from enquiries about the weather.

World's first airline seating system that depends on your mood | CNNGo.com


Flight control: Surround yourself with the right people.

In another move toward making life more predictable, Latvian airline airBaltic has launched the world's first "SeatBuddy" scheme that pairs up like-minded passengers. 
The free and optional service powered by social seating system Satisfly can place you next to someone who is in the same "flight mood" as you.

[...]

AirBaltic says customer information is collected in a secure database and passenger identity isn't disclosed after matches are made. So there's a surprise factor after all.
The first test flights with the "SeatBuddy" option will take off at the end of June 2012. 
AirBaltic serves 60 destinations with direct flights from its home base in Riga, Latvia.

airBaltic introduces intelligent seating with SeatBuddy, powered by Satisfly – the cabin gets social | Leaders in airline & airport customer engagement :: SimpliFlying

Previously, KLM and Malaysia Airlines have introduced initiatives that allow a passenger to choose who to sit next too. But they’ve been limited because I can only do it when I fly that airline. But if I sign up for airBaltic’s SeatBuddy, it gives me the option to add other airline frequent flier programs I’m part of, so that my preferences can be saved the next time I fly any of my preferred airlines. Of course, the other airline also needs to be using the Satisfly-powered product.




2010-05-11

Lockheed Falcon HTV-2 Test Flight

Update 2011-08-12: See also  Hypersonic Falcon Launched and Lost

Lockheed Falcon unmanned aircraft

Computer animation of Lockheed Martin Skunk Works' hypersonic cruise vehicle for DARPA Falcon programme



DARPA Falcon Project

The DARPA Falcon Project (Force Application and Launch from Continental United States) is a two-part joint project between the Defense Advanced Research Projects Agency (DARPA) and the United States Air Force (USAF).


The program was to follow a set of flight tests with a series of hypersonic technology vehicles.[8]

The FALCON project includes:
  • X-41 Common Aero Vehicle (CAV) — a common aerial platform for hypersonic ICBMs and cruise missiles, as well as civilian RLVs and ELVs.
  • Hypersonic Technology Vehicle-1 (HTV-1) — a test concept, originally planned to fly in September 2007, now canceled.[9]
  • HTV-2 — first flew on 22 April 2010, but contact was lost soon afterwards[10][11]
  • HTV-3X — Blackswift, now canceled
  • Small Launch Vehicle (SLV) — a smaller engine to power CAVs, now complete
Illustration of HTV-2 reentry phase





DARPA Falcon hypersonic X-plane - part 1




DARPA Falcon hypersonic X-plane - part 2






Falcon Hypersonic Technology Vehicle-2 (HTV-2)

The Falcon program objectives are to develop and demonstrate hypersonic technologies that will enable prompt global reach missions. The technologies include high lift-to-drag techniques, high temperature materials, precision navigation, guidance, and control, communications through plasma, and an autonomous flight safety system. Leveraging technology developed under the Hypersonic Flight (HyFly) program, Falcon will address the implications of hypersonic flight and reusability using a series of hypersonic technology vehicles (HTVs) to incrementally demonstrate these required technologies in flight. The HTV-2 program will demonstrate enabling hypersonic technologies for future operational systems through rocket-boosted hypersonic flights with sufficient cross-range and down-range performance to evaluate thermal protection systems, aerodynamic shapes, maneuverability, and long-range communication for hypersonic cruise and re-entry vehicle applications.


Pentagon’s Mach 20 Glider Disappears, Whacking ‘Global Strike’ Plans


The Pentagon’s controversial plan to hit terrorists half a planet away suffered a setback this weekend, after an experimental hypersonic glider disappeared over the Pacific Ocean.


Update Aug 12 2001: See also


FOX News.com

Military's Hypersonic Falcon Missile Test a Dud?

The test vehicle launched last week reached Mach 5 on launch, and was designed to crash and sink into the sea and sink near Kwajalein Atoll, 2,000 miles south-west of Hawaii, 30 minutes later and 4,000 miles from the launch site.

But in a statement released Friday night, DARPA said that while “the launch vehicle executed first-of-its-kind energy management maneuvers, clamshell payload fairing release and HTV-2 deployment,” all wasn't perfect with the superfast craft. “Approximately 9 minutes into the mission, telemetry assets experienced a loss of signal from the HTV-2. An engineering team is reviewing available data to understand this event.”

The DARPA press release did not specify whether any of the test maneuvers were completed by the Lockheed Martin built craft before controllers lost communications with the craft, the site adds.



Uncovered by the incomparable flateric on secretprojects.co.uk, this graphic from a December presentation by DARPA Tactical Technology Office director David Nyland suggests contact with the HTV-2 (on the yellow Mission A line) was lost somewhere between beginning reentry and starting its hypersonic glide.


Investigation of the telemetry failure is under way. But the question now is what this means for the second HTV-2 flight (red Mission B line above). This is intended to demonstrate the cross-range capability provided by the vehicle's hypersonic aerodynamic efficiency - and key to a prompt global strike weapon - involving sustained maneuvers beyond the simple S-turns planned for the first flight. It's more likely the second flight will have to be a repeat of the first.


Sources:
  1. YouTube - Lockheed Falcon unmanned aircraft
  2. DARPA Falcon Project - Wikipedia, the free encyclopedia
  3. File:Speed is Life HTV-2 Reentry New.jpg - Wikipedia, the free encyclopedia
  4. PUB_HTV_Progression_DARPA_2008_lg.jpg (JPEG Image, 1125x844 pixels) - Scaled (67%)
  5. YouTube - DARPA Falcon hypersonic X-plane - part 1
  6. YouTube - DARPA Falcon hypersonic X-plane - part 2
  7. DARPA - Tactical Technology Office (TTO)
  8. Pentagon’s Mach 20 Glider Disappears, Whacking ‘Global Strike’ Plans | Danger Room | Wired.com
  9. FOXNews.com - Military's Hypersonic Falcon Missile Test a Dud?
  10. DARPA's HTV-2 Didn't Phone Home

Related:
  1. Hypersonic Test Vehicle Falcon goes missing on test flight, DARPA admits
  2. Spaceflight Now | Breaking News | New Minotaur rocket launches on suborbital flight
  3. AFP: US hypersonic glider flunks first test flight

2008-10-05

Rocket Racing League


The Rocket Racing League (RRL) is a futuristic sports league combining the exhilaration of racing with the power of rocket engines

clipped from en.wikipedia.org
Rocket Racing League

The Rocket Racing League is a proposed racing league that would use rocket powered aircraft. The formation of the league was announced by Granger Whitelaw two time Indy 500 winning team owner and Peter Diamandis, founder of the Ansari X-Prize, on October 3, 2005, in partnership with the Reno Air Races. According to Diamandis, the purpose of the league is to "inspire people of all ages to once again look up into the sky and find inspiration and excitement."

clipped from uk.youtube.com

Rocket Racing League - Teaser


Rocket engines are provided through multiple engine manufacturers who serve as technology partners to the League, augmenting its own staff in the primary technology areas of airframe, avionics and engine integration. Currently the two engine technology partners are Armadillo Aerospace and XCOR Aerospace.

clipped from uk.youtube.com

Test flight of RRL Rocket Racer with Armadillo Aerospace eng

clipped from www.xcor.com
clipped from uk.youtube.com

XCOR Rocket Racer flight test

GALLERY:


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Related:
Rocket Racing League
Rocket Racing League - Wikipedia, the free encyclopedia
Armadillo Aerospace - Home
XCOR Aerospace - Liquid fuel rocket engines, pumps composites and spacecraft
‘Rocket racing league’ gets its start - New Space Race- msnbc.com
Rocket Racing League
Rocket Racing League Wants to be NASCAR in the Air | Geekdad from Wired.com

2008-01-25

LAPCAT -- Long-Term Advanced Propulsion Concepts

From Brussels to Sydney in about 2 to 4 hours


clipped from www.esa.int
LAPCAT logo

LAPCAT logo

Overview


Long-Term Advanced Propulsion Concepts and Technologies


To reduce the travelling time of long-distance flights, e.g. Brussels to Sydney, in about 2 to 4 hours, advanced propulsion concepts and technologies need to be developed. This requires a new flight regime with Mach numbers ranging from 4 to 8. At these high speeds, classical turbo-jet engines need to be replaced by advanced airbreathing engines.

LAPCAT - Configuration A2 Vehicle
Configuration A2 Mach 5 Civil Transport

“...to reduce long-distance flights, e.g. From Brussels to Sydney, to less than 2 to 4 hours. Achieving this goal intrinsically requires a new flight regime for commercial transport with Mach numbers ranging from 4 to 8.

Configuration A2 Mach 5 Civil Transport
LAPCAT - Scimitar Engine
Scimitar Engine Installation
Scimitar Engine Installation
Image Library - LAPCAT
Lapcat on Ground 1
Config A2 on Ground 1
Lapcat Takeoff
Config A2 Takeoff
Lapcat In Flight 1
Config A2 In Flight 1
Lapcat in Flight 2
Config A2 In Flight 2
Lapcat Size Comparison 1
Config A2 Size Comparison 1
Lapcat Size Comparison 2
Config A2 Size Comparison 2

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Related:
Technical and Quality Management Portal - Mechanical - Overview
Reaction Engines Limited :: LAPCAT
Tech Digest: LAPCAT will fly you from Sydney to Brussels in four hours