Kerbin Circumnavigation 1.0.4/1.0.5 - Aviator Challenge Continuation

[WinkAllKerb'']

Hum ; ) this is my second attempt just a few bad luck while braking (probably a rock or something)

Anyway as i have some extra fuel i can even go a little a faster and take more care while landing next time ; ) hehe around 1.01 1.03 not bad for second prototype and first try with it.

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Edit: Second attempt succesfull to reach KSC (third all attempt included) but an ugly spin while final KSC approach losing a few minutes because of that, also a pretty ugly fuel efficient take off so i had to slow down a little while circumnavigating around Kerbin to compensate :| .

1 Circumnavigation @ 1:07:22

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Edited July 31, 2015 by WinkAllKerb''

[ExaltedDuck]

Rolls Royce, Boeing, Airbus, Lockheed-Martin, Northrop Grumman, Pratt&Whitney, and every other jet manufacturer also exploits physics.

The jet's tail cone is often visible in high bypass turbofans like what you see on airliners but not always. In modern low bypass turbojets, there's usually some kind of thrust vectoring shroud that hides it. Also the purpose is to direct the engine's exhaust and increase the jet's exhaust speed (and thus thrust). The way we've been using them on rapiers is more akin to the boat tail of a precision rifle round in that it provides a clean collapse of the pressurized aerodynamic flow around the body to reduce drag as compared to a flat back, which would produce a choppy wake that reduces aerodynamic efficiency.

The shock cone and various nose cones could be made of titanium like the real life tail cones of jet engines are and could be entirely capable of many hundreds or even thousands of hours of flight. Parachutes would likely not live happily for the few minutes it would take them to become cinderized.

Edited July 31, 2015 by ExaltedDuck

[Xannari Ferrows]

Edit: Second attempt succesful but an ugly spin while final KSC approach losing a few minutes because of that' date=' alo a pretty ugly fuel efficient take off so i had to slow down a little while circumnavigating around Kerbin to compensate :| .

1 Circumnavigation @ 1:07:22

[url']http://imgur.com/a/qGqzY

Looks like a design for a speedplane. Maybe something like that should be tried eventually.

...Although I'm perfectly fine with sticking this on the board anyway... J-just so ya know...

http://www.datainterlock.com/Kerbal/circumnavigator%20resized.png

- - - Updated - - -

Rolls Royce, Boeing, Airbus, Lockheed-Martin, Northrop Grumman, Pratt&Whitney, and every other jet manufacturer also exploits physics.

https://upload.wikimedia.org/wikipedia/commons/4/4c/Airbus_Lagardère_-_GP7200_engine_MSN108_(1).JPG

The jet's tail cone is often visible in high bypass turbofans like what you see on airliners but not always. In modern low bypass turbojets, there's usually some kind of thrust vectoring shroud that hides it. Also the purpose is to direct the engine's exhaust and increase the jet's exhaust speed (and thus thrust). The way we've been using them on rapiers is more akin to the boat tail of a precision rifle round in that it provides a clean collapse of the pressurized aerodynamic flow around the body to reduce drag as compared to a flat back, which would produce a choppy wake that reduces aerodynamic efficiency.

The shock cone and various nose cones could be made of titanium like the real life tail cones of jet engines are and could be entirely capable of many hundreds or even thousands of hours of flight. Parachutes would likely not live happily for the few minutes it would take them to become cinderized.

The difference of course being that these are separate parts, and because of how exhaust collision works in Kerbal Space, the plane should theoretically not even be able to move if any other engine was used.

[WinkAllKerb'']

thks Xana yup, i suppose i could go under the hour with this plane with proper take off and landing ; ) will continue to try ; )

[nicky4096]

no offense, you're the boss, but would it be ok if I made my own circumnavigation challenge? like i said, no offense

[Xannari Ferrows]

Sure, go ahead. Although I'll remind you of the rules where two challenges can't be too similar.

[nicky4096]

there is a rule like that?

oh well...

[Mikki]

Nope, that's technically a physics exploit. If it means what I think it does anyway.

Hi Xannari and nicky

To your rapierspike question... i don`t think that it is a cheaty physics exploit, i have experimented with it too and i have sometimes experienced weird phantomforces on the spiked crafts, so i think everyone should decide for himself for adding reversed cones to the rapier engines... aslong as there are attachmentpoints...?

I stopped using rapierspikes, for good reason... Greetings Mikki

However, Xannari has the last word to it

[WinkAllKerb'']

Tried a few others designs with some result:

1 circumnavigation @ 1:00:34 (snif snif)

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[GraviTykillz]

One more go around

Plane :

on runway

halfway :

I ran out of fuel over the KSC mountians...grr:huh:

Final Time..Runway to Runway

46 minutes 11 seconds. wooT?

I'm thinking i can get under 45

Peace out

GKz

[Mikki]

Black paint does make planes faster... cool!

[WinkAllKerb'']

So i'll started to use the rapier for the first time yesterday and after struggling a lot with thrust, take off and fuel efficiency with many many prototypes here the first succesful one under the minute:

The take off was kinda slow but will reduce the fuel weight a lot as i had many extra when landing to fix this and reach max speed faster to make a better timer with it ; ). btw Xana previous time was 1.00.36 not 22 ; )

1 Velocity Circumnavigation @ 00:54:12

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EDIT: 1 Velocity Circumnavigation @ 00:52:45

with same plane slighty optimized (first optimization pass will enhance it further more soon especially regarding heat dissipation and a few less fuel)

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(yup yup the black bird look kinda great , nice perf Graviti ; )

Edited August 2, 2015 by WinkAllKerb''
new plane ; new try ; )

[Xannari Ferrows]

So i'll started to use the rapier for the first time yesterday and after struggling a lot with thrust' date=' take off and fuel efficiency with many many prototypes here the first succesful one under the minute:

The take off was kinda slow but will reduce the fuel weight a lot as i had many extra when landing to fix this and reach max speed faster to make a better timer with it ; ). btw Xana previous time was 1.00.36 not 22 ; )

1 Velocity Circumnavigation @ 00:54:12

http://imgur.com/a/T0Dib

Intakes upon intakes I see...

It's always the long planes that look more awesome. Is that a Turbojet I see under the RAPIER? You, sir, are a madman.

One question before I add you, though: How far away from the runway were you on touchdown?

[WinkAllKerb'']

Intakes upon intakes I see...

It's always the long planes that look more awesome. Is that a Turbojet I see under the RAPIER? You, sir, are a madman.

One question before I add you, though: How far away from the runway were you on touchdown?

Yup Yup it is and it work amazingly well to reach quick an alt>15k and 1/4 circum then i turn it off until landing. (ps: previous post edited with new timer)

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Wut ! ! ! That close to KSC @ 44:09 update soon xDr

Edited August 2, 2015 by WinkAllKerb''
& thks for higlighting the KSC limit things, wasn't really paying attention to that until now, now i will ; )

[Xannari Ferrows]

Holy... Wait, what is that? Are you sure that's an aircraft? The again... I never said it had to look sane, and it least is has wings instead of being a missile.

I'm not exactly sure how far away you are from the runway spawn point, but if I had to make a guess, it looks roughly 950 meters, so you pass!

[WinkAllKerb'']

; ) many many many many many many prototypes later xDr ; )

1 Velocity Circumnavigation @ 00:45:19

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it's start getting nice ; )

(btw i use turbojet only for fast ascent , secure landing and restore electricity around 2/3 flight else they are turned off doing so i reach mach5 2.00 to 3.00 min after take off ; else i do the whole flight with only the two rapier for fuel consumption efficiency)

Edited August 2, 2015 by WinkAllKerb''

[Haruspex]

Certainly a huge plane you've got there.

...Huge? No. It's medium sized!

Good news everyone!

I've built something bigger!

Behold the Great Beast - the Megatherion!

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Circumnavigations: 1. Flight time: 1:29:12.

Edited August 4, 2015 by Haruspex
album embedded, pics removed

[t3hJimmer]

My CPU saw that beast and started crying

[Xannari Ferrows]

...Huge? No. It's medium sized!

Good news everyone!

I've built something bigger!

Behold the Great Beast - the Megatherion!

http://i.imgur.com/myaxdN7.jpg

Circumnavigations: 1. Flight time: 1:29:12.

http://i.imgur.com/WlAvIFg.jpg

Full set of screenshots from the flight here: http://imgur.com/a/b52gK#0

Jeez! Okay, I stand corrected, it's medium sized...

How did you manage to go through almost all of your fuel supply? I get that they're Turbojets, but...

Interesting idea's spawning...

This looks like one of those crazy designs that is made to do 2 circumnavigations, but doesn't quite make it there. Oh well, at least it isn't a failure.

http://www.datainterlock.com/Kerbal/circumnavigator%20resized.png

[Haruspex]

How did you manage to go through almost all of your fuel supply? I get that they're Turbojets, but...

The answer is simple: this monstrosity is severely overweight (308 t at takeoff) and can't accelerate to hypersonic and climb to cruise altitude until ~20 min when a third or so of fuel is consumed (pointlessly, flying at like 300 m/s at 5-9 km). I could empty the central large tank completely and still do it, but went for maximum takeoff weight possible to see if this thing will fly at all

[WinkAllKerb'']

Worked a little on the latest plane, reduced parts, reduced fuel and reduced drag can still enhance it a little more.

Also started working on multiple circumnavigation plane (last screenshot: so far this baby can do 1 circum with 15k fuel remaining, should be good for two as a lot of fuel are consumed while take off with turbo jet, i continue working on it, currently mostly miss a few lift and stability and eventually a few heat shields here and there)

1 Velocity Circumnavigation @ 00:44:01

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(comments seeable on imgur)

Edit:

From the same basis another prototype slighty better, with a few less part, less drag, less fuel and better heat resistance for slighty higher cruise speed.

(secure attempt with it for testing purpose but this one as some more potential to offer)

1 Velocity Circumnavigation @ 00:43:23

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Edited August 3, 2015 by WinkAllKerb''

[Death Engineering]

52 Kerbal Circumnavigation

Not sure if any other entries going for head-count on the mission, but this quad ramjet passenger jet made it once around. Time to scale it up, now..

Total kerbs on board: 52 (48 passengers + 4 crew)

Flight time: 1:32:12

Circumnavigations: 1

Flight path: Prograde equatorial

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[Xannari Ferrows]

http://i.imgur.com/oa7jhE8l.png

52 Kerbal Circumnavigation

Not sure if any other entries going for head-count on the mission, but this quad ramjet passenger jet made it once around. Time to scale it up, now..

Total kerbs on board: 52 (48 passengers + 4 crew)

Flight time: 1:32:12

Circumnavigations: 1

Flight path: Prograde equatorial

http://imgur.com/a/qZEcK

This entry scares me. It's almost too absurd.

52 Kerbals...

I can't even... Just what...

http://www.datainterlock.com/Kerbal/circumnavigator%20resized.png

[Maverick_aus]

Hi, first time poster here. I've been enjoying reading about these challenges for a while. Thought I'd give it a shot.

Not breaking any records here, but I enjoyed the challenge.

Apart from a few test flights (and a failed attempt in 1.0.2 previously)..."yeah, first tiiime!"

Aircraft name: Globerunner

Pilot: Val

Flight time: 1:07:23

Circumnavigations: 1

Mods: KER, Pilot Assistance

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(I landed immediately before the runway on the flat grass of KSC, if you'd like proof I can post another shot of my descent before touchdown, showing how close I was. Sorry if this unclear)

[WinkAllKerb'']

- Grats maverick, nice first try ; )

- Nice plane Death, taking some designs notes for next attempt regarding your tail.

2 Circumnavigation @ 1:42:12

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(also a velocity attempt with an mk3 @ 23:50, slighty less faster than my mk2)

Edited August 4, 2015 by WinkAllKerb''