CR4 - Forum: Aerospace

09/24/2022 1:59 AM The Struggle to Achieve Laminar Air Flow

by SolarEagle

Last post: 01/15/2023 4:53 AM

by SolarEagle

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315

11/15/2021 4:10 PM Satellite Slingshot

by Rixter

Last post: 11/24/2021 9:23 AM

by SolarEagle

43

364

05/05/2018 3:10 PM Reminiscing About The Warthog

by Doorman

Last post: 10/31/2018 3:49 PM

by munch

22

729

11/17/2017 8:27 AM Jumping Jack the Robot

by James Stewart

Last post: 06/26/2018 3:33 AM

by theodon

17

613

05/17/2018 8:55 PM Speed Check

by lyn

Last post: 05/21/2018 5:18 PM

by rashavarek

8

363

01/02/2018 9:05 AM Hydrogen/Oxygen Rocket Exhaust Gases

by Sapling

Last post: 01/08/2018 2:17 PM

by James Stewart

40

860

10/16/2017 4:36 PM Neutron Stars Collide, Create Black Hole, Release Gamma Ray Burst

by James Stewart

Last post: 12/22/2017 4:56 AM

by Codemaster

20

917

03/10/2017 2:26 AM Event Horizon Telescope Ready to Image Milky Way's Central Black Hole

by Andrew Westman

Last post: 03/11/2017 1:31 PM

by StandardsGuy

2

1139

02/22/2017 6:18 PM 7 Earth-Size, Habitable-Zone Planets Found Around A Single Star

by Andrew Westman

Last post: 02/27/2017 1:41 PM

by MR. Guest

46

1017

10/26/2016 12:47 AM End of an Era

by lyn

Last post: 10/27/2016 3:27 PM

by James Stewart

15

561

12/07/2015 9:09 PM Man Noticed This Abandoned Hangar But What's Inside Caught Him By Surprise

by AussieBob

Last post: 01/28/2016 1:13 AM

by Casper71

24

1215

12/18/2015 8:31 PM Smoking Brakes

by Fredski

Last post: 12/27/2015 9:03 PM

by Fredski

51

771

08/30/2015 10:17 AM See This Next Month

by Fredski

Last post: 08/31/2015 2:24 AM

by Andy Germany

7

447

06/18/2015 6:54 PM Its Nice Having an Atmosphere

by Fredski

Last post: 06/23/2015 1:04 AM

by Sciesis2

10

452

07/26/2014 9:13 PM Solar Eclipse on Mars

by Rixter

Last post: 07/27/2014 4:27 PM

by redfred

10

359

11/21/2013 8:29 AM Experienced Pilot; Available for Immediate Employment

by lyn

Last post: 11/23/2013 6:34 PM

by lyn

41

558

11/03/2013 2:52 PM An Amazing View Of Mars

by kramarat

Last post: 11/14/2013 12:39 PM

by energyconversion

9

334

03/15/2013 2:44 PM Just for Fun

by lyn

Last post: 03/19/2013 10:53 AM

by Rick@cae

20

458

09/11/2012 3:32 PM The Physics of Water on Mars

by Out of Box Experience

Last post: 09/24/2012 2:07 AM

by jmmyadam

34

606

09/11/2012 7:25 PM I Flew Today

by lyn

Last post: 09/12/2012 6:44 PM

by lyn

4

153

08/06/2012 4:59 AM Curiosity Has Landed

by europium

Last post: 08/10/2012 5:22 AM

by Wal

47

579

03/13/2012 8:07 AM Powers of Ten; New Version

by Usbport

Last post: 03/14/2012 10:42 PM

by Mikerho

20

575

02/25/2012 11:43 AM Have They Found Dark Matter?

by StandardsGuy

Last post: 03/09/2012 12:03 PM

by StandardsGuy

12

442

08/09/2011 11:41 PM The Kepler Mission- Antiscience's Next Victim

by Bayes

Last post: 08/17/2011 1:34 PM

by cuba_pete

143

871

09/23/2006 1:00 PM New Scientist and the Relativity Drive

by Jorrie

Last post: 06/19/2011 2:13 AM

by Urmaton

13

493

01/28/2011 7:47 AM Remembering Space Shuttle Challenger

by BruceFlorida

Last post: 02/04/2011 7:08 PM

by tcmtech

35

432

12/14/2010 9:45 AM NASA Tech Briefs

by lyn

Last post: 12/15/2010 11:52 AM

by sue

17

315

03/16/2010 11:30 PM Technical Writing Resources

by wingman1985

Last post: 04/09/2010 8:03 AM

by gsuhas

27

278

12/17/2009 2:42 PM The Relative Size of Planets and Stars - A Great Website

by Bayes

Last post: 12/21/2009 6:55 AM

by Randall

11

997

07/16/2009 11:19 AM Moon Colonists

by PWSlack

Last post: 07/17/2009 2:32 PM

by indel

15

210

06/26/2009 10:09 AM Why Don't Moons Have Moons?

by Crabtree

Last post: 07/03/2009 6:30 PM

by StandardsGuy

41

621

05/22/2009 1:22 AM Universe Sandbox

by Kris

Last post: 05/26/2009 1:16 PM

by Kris

10

289

01/20/2009 12:35 PM Access to High-Earth Orbit Is About to Get Much Cheapter

by Rorschach

Last post: 03/17/2009 12:10 PM

by U V

94

567

11/19/2006 12:50 PM Dark Energy Battles Dark Matter

by Jorrie

Last post: 11/03/2008 12:26 AM

by Jorrie

23

1837

10/01/2006 10:28 AM Is the Hubble era coming to a close?

by Jorrie

Last post: 08/06/2007 7:49 AM

by Hap

16

416

10/20/2006 2:58 PM Greenland's Glaciers are Shrinking

by Bayes

Last post: 10/22/2006 12:14 AM

by Shyam

7

217

09/21/2006 3:13 PM To Boldly Go...

by Jorrie

Last post: 09/26/2006 10:26 AM

by Blink

4

338

08/24/2006 10:24 AM Pluto: No Longer A Planet

by Bayes

Last post: 08/29/2006 2:55 AM

by mysticgohan

16

386

08/25/2012 3:39 PM Neil Armstrong Dead at Age 82

by Anonymous Hero

Last post: 09/05/2012 7:44 PM

by Kris

23

443

06/11/2012 12:44 AM Venus' Transit and Hubble Space Telescope Captured Together

by europium

Last post: 06/13/2012 8:30 PM

by StandardsGuy

4

425

09/02/2022 12:45 PM Hazard of Moon's polar region

by Rixter

Last post: 09/23/2022 9:28 AM

by HiTekRedNek

14

175

01/06/2022 10:58 PM Red Supergiant collapse

by redfred

Last post: 08/25/2022 7:18 AM

by PWSlack

13

214

11/12/2020 8:08 AM Space Qualified Thread Lock

by Nigh

Last post: 11/21/2020 7:14 PM

by Yuval

25

641

04/14/2020 5:46 AM Apollo 13 - Fifty Years Ago

by PWSlack

Last post: 04/17/2020 3:21 PM

by phoenix911

16

387

03/28/2010 2:58 PM Oh Crap, an Asteroid is Coming Our Way! But Wait....

by chrisg288

Last post: 02/22/2020 7:55 AM

by HiTekRedNek

205

1525

09/10/2016 1:33 PM Is SpaceX Being Sabotaged?

by Bayes

Last post: 09/21/2016 11:15 AM

by JBTardis

49

633

07/17/2015 3:37 PM Pluto Video

by Fredski

Last post: 07/18/2015 12:59 PM

by StandardsGuy

1

274

11/09/2014 7:53 AM Will They Stick the Landing?

by Fredski

Last post: 11/11/2014 3:09 PM

by Fredski

10

362

07/11/2010 9:08 PM Praises for CR4 and All the Members

by energygod

Last post: 07/13/2010 6:12 PM

by energygod

19

242

12/03/2009 10:19 AM Improved Aircraft Landings

by ronseto

Last post: 01/13/2010 3:32 PM

by chrisg288

22

564

06/01/2009 1:24 PM Airbus A330-200

by indel

Last post: 06/26/2009 5:17 PM

by kudukdweller9

206

1678

07/14/2008 5:05 PM A modest proposal - for Mars

by bhankiii

Last post: 07/18/2008 2:36 PM

by bhankiii

16

328

12/03/2006 1:26 PM NASA's Own Sky Crane

by Jorrie

Last post: 12/05/2006 1:24 PM

by Jorrie

11

537

10/16/2006 9:46 AM News and Images from the Planets Meeting

by Bayes

Last post: 10/17/2006 8:40 AM

by mgaulin

1

222

09/14/2006 4:29 PM When #9 becomes 134340

by Silas Marner

Last post: 09/14/2006 9:51 PM

by mgaulin

4

352

08/27/2019 7:51 AM The Hero of United Flight 232

by Lo_Volt

Last post: 08/28/2019 9:58 PM

by Rixter

7

305

11/01/2006 1:29 PM Airplane on a Treadmill?

by Anonymous Poster

Last post: 01/27/2010 3:03 PM

by Anonymous Poster

135

1898

02/15/2021 8:22 AM Plasma Engine

by TommyJo

Last post: 03/26/2021 10:17 AM

by JCooper

14

233

10/16/2019 7:04 AM NASA Unveils Future Moon Spacesuits

by PWSlack

Last post: 10/18/2019 1:13 PM

by MR. Guest

7

198

11/23/2015 10:04 PM What is This.....Exactly?

by Fredski

Last post: 12/29/2015 5:20 PM

by Casper71

30

940

12/02/2015 1:12 PM Novel Material for Drone Construction

by BestInShow

Last post: 12/03/2015 9:45 AM

by texasron

14

337

11/04/2015 3:23 PM Satellite Orbit Adjustments?

by IQ

Last post: 11/05/2015 9:50 AM

by Legolaz

13

558

09/28/2014 1:31 PM Use of Payloads

by monish333

Last post: 09/30/2014 7:41 AM

by flapjack

8

476

07/16/2014 12:02 PM Do Passenger Aircraft Have Separate Brake Systems on the Front and Rear Wheels?

by wrenchtwirler

Last post: 08/25/2014 11:59 AM

by mbrosch

19

692

07/17/2014 4:23 PM What Happened to Malaysia Airline Flight MH-17?

by dj95401

Last post: 08/01/2014 11:41 PM

by dvmdsc

60

752

04/29/2014 9:50 AM New Lead in Missing Airliner

by SolarEagle

Last post: 05/07/2014 11:51 PM

by Gavilan

67

750

06/11/2009 11:34 AM Safe Landings in Thick Fog on Dark Nights

by D.RAMAKRISHNA NAIDU

Last post: 06/30/2009 10:20 AM

by D.RAMAKRISHNA NAIDU

45

460

09/30/2006 4:00 PM Lies, More Lies, and Arithmetic

by Blink

Last post: 05/11/2009 5:18 PM

by RGO

30

870

10/13/2006 2:41 AM Astronaut Challenge

by Jorrie

Last post: 07/29/2008 9:46 AM

by Kaboom

36

466

02/01/2008 1:33 PM Pushing an Airplane: Free Energy (For Someone)

by Hendrik

Last post: 02/14/2008 10:51 AM

by Physicist?

73

666

07/10/2019 9:50 AM This is Not Normal!

by Rixter

Last post: 07/11/2019 11:47 AM

by MR. Guest

11

375

03/03/2013 11:58 PM Any Thoughts About Installing CNG On a Light Piston Aircraft Engine?

by gherrick

Last post: 12/03/2013 5:35 PM

by ronwagn

88

820

12/03/2011 9:49 AM Solid Science Or Nutcase On A Power Trip?

by kramarat

Last post: 03/10/2012 7:44 AM

by kramarat

195

1130

08/24/2022 6:30 PM New Moon Picture

by lyn

Last post: 09/23/2022 4:23 PM

by SolarEagle

49

426

05/18/2014 1:19 PM Light Speed

by sekarganesh93

Last post: 06/01/2014 12:17 AM

by dj95401

16

232

09/30/2019 3:22 PM Recent Space News

by StandardsGuy

Last post: 10/05/2019 9:11 PM

by StandardsGuy

10

219

08/09/2019 12:40 AM Tardigrades on the Moon

by StandardsGuy

Last post: 08/21/2019 5:41 PM

by StandardsGuy

9

324

07/17/2019 3:41 AM UK a Step Closer to the Moon

by PWSlack

Last post: 07/18/2019 2:55 AM

by PWSlack

5

118

01/19/2017 5:45 AM Genesis of Planetary Orbits

by gutmonarch

Last post: 01/24/2017 1:34 PM

by James Stewart

46

507

10/11/2022 4:33 PM What are some of the most important and perfect skills for an aerospace engineer to have?

by presque

Last post: 10/25/2022 10:33 PM

by Anonymous Poster

12

428

03/18/2012 2:22 PM Proof That Pi Equals 4!

by Steve Urich

Last post: 07/05/2022 4:10 PM

by phoenix911

23

799

10/31/2020 2:15 PM What if ?

by Water Gump

Last post: 11/04/2020 11:09 AM

by PWSlack

3

313

05/20/2018 4:47 AM Magtube Question

by Edward Barnett

Last post: 09/18/2020 9:20 AM

by dk.odi100

116

1344

09/16/2019 2:38 PM Can Physicists Rewrite the Origin Story of the Universe?

by StandardsGuy

Last post: 05/04/2020 10:58 AM

by not so smart

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400

04/30/2018 3:02 AM What are Five Factors Affecting Drone Service Aerospace Industry?

by akshata1988

Last post: 01/20/2020 3:20 AM

by Anna Shaw

2

333

02/28/2017 12:00 AM The Flying Car

by Anonymous Poster

Last post: 01/11/2020 12:56 AM

by lexx7887

49

722

12/30/2016 1:46 PM Is it Possible to Make a Button Head Machine Screw a Certain Size/Gram Weight?

by buffalocrossing

Last post: 05/19/2019 9:39 PM

by buffalocrossing

26

494

03/16/2018 2:45 AM Blockchain Technology

by Anonymous Poster

Last post: 02/16/2019 8:12 AM

by lj962500

9

610

10/13/2016 10:23 AM Earth Not Rotating

by Janissaries

Last post: 12/04/2017 3:38 PM

by James Stewart

254

1979

10/13/2017 1:33 AM For Elon Musk =) Inverted Magnetic Gravity Well for a Controlled Landing

by alex12

Last post: 10/16/2017 8:51 AM

by James Stewart

23

460

07/13/2017 12:39 PM Reentry Options

by SSCpal

Last post: 07/16/2017 6:01 PM

by redfred

24

565

03/14/2017 1:27 PM Metal Storm Few Upgrades Trajectory Net Cool Gun vs Jet

by alex12

Last post: 03/15/2017 2:06 AM

by alex12

9

1088

10/12/2016 11:45 PM His Presidency Want's to Send Children to Mars?

by JE in Chicago

Last post: 11/02/2016 3:34 PM

by phoenix911

52

533

10/03/2016 12:53 AM Martian Explorer Radiation Protection

by SolarEagle

Last post: 10/07/2016 1:26 AM

by truth is not a compromise

29

688

08/26/2016 5:41 AM Missile Systems and Rockets

by kdrdgn07

Last post: 08/29/2016 10:02 AM

by James Stewart

15

372

05/21/2016 4:55 PM Aluminum 2219 Tank

by Fredski

Last post: 05/24/2016 3:33 PM

by James Stewart

1

192

04/07/2016 9:50 PM Space Living

by walt

Last post: 04/08/2016 4:58 PM

by Mikerho

11

239

02/27/2016 11:03 AM How Do Gravitational Waves Propagate?

by JohnMc

Last post: 02/27/2016 2:53 PM

by Anonymous Poster

3

176

01/20/2016 1:35 AM Calculating Energy of the Landing Gear Retraction

by semtenwolde

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by jhhassociates

8

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12/24/2015 7:19 AM Rocket Fuel

by Fredski

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