ManEatingApe

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About ManEatingApe

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  1. That made me laugh out loud - I got some strange looks from people nearby! I love the idea of anti-records to inspire creativity. There's so many different great approaches in this thread. I'm also pretty sure we can improve on the normal records too - a low mass mission < 30 tons should be doable. Also by using only 5219 m/s @jonny showed that an SSTBAB (Single Stage to Burbarry and Back) is within the realms of possibility for anyone crazy enough to try. Thanks for the tip! Just to check you mean go K-E-K-K-J-E -> To infinity and beyond? (I'm also following your gravity assist conversation with interest)
  2. Here's the promised primitive penny-pinching entry suitable for even the most cost conscious of space programs - a mere 16,917 funds. None of yer fancy nuclear or ion engines, just good 'ol fashioned chemical engines. Now it may have taken a teensy little bit longer than some other entries, some 23 years erm...I mean centuries, but who's in a hurry right? Outbound journey used the standard Kerbin -> Eve -> Kerbin -> Kerbin -> Jool route culminating in an AP a millennia away! A modest 82 m/s burn then flipped our orbit retro-solar and gave a Jool intercept dropping our PE to the same as Burbarry's. Now for the tricky part. The relative velocities of the Goliath and Against the Grain were still over 3,400 m/s. Normally you could use Kerbin or Eve gravity assists to slow down, but when you're going the wrong way these are much less effective - it would take dozens to slow down enough. Instead a lightweight barebones rescue tug (no reaction wheel, batteries or antenna) packing 7 km/s dV rendezvoused with Burbarry and then caught up again with the Against the Grain It was barely enough, still had to use all the Jetpack propellant A 3rd Jool assist kicked us into a wonderfully eccentric Kerbol orbit. It's only barely the right way around. Left alone we'll plunge into the sun but our orbit is so wonky that it's cheap to fix that. From there it was straightforward to use a Kerbin assist to drop our PE A relatively tame aerobrake at 4.2 km/s Hey, anyone visit Dres while we were gone? Summary: Cost 16,917 funds, mass 70 tons, 8 gravity assists, mission duration 2,304 years. Craft was completely stock but I used Precise Maneuver and Better Time Warp mods (for obvious reasons ) Route Details: Outbound Kerbin -> Eve -> Kerbin -> Kerbin -> Jool (1078 + 20 + 4 + 117 = 1219 m/s) Retro-solar burn at AP then reverse Jool and Kerbin assists (82 + 20 = 102 m/s) Rendezvous with Burbarry (7,600 m/s total including jetpack) Inbound Jool -> Kerbin -> Kerbin (99 + 159 + 11 = 269 m/s) Full Mission Album Download Craft File
  3. @jonny Fantastic rescue, wonderful use of gravity assists and a truly Kerbal aerobrake into Kerbol capture! I had a crazy dream that just using EVA it might be possible to go Eve -> Eve ... -> Eve -> Jool and flip Burberry's orbit without needing any vehicle at all Probably not enough precision in the jetpack, but I really like your idea of bumping up Burberry's orbit as much as possible.
  4. @Physics Student Fun challenge! Nice work on using Jool to completely flip your orbit - I hadn't even considered that was possible. Went for the brute force and ignorance approach: 36,000 m/s dV, packed into 484 tons, costing 216,084 funds. Total mission time 1 year 93 days. Burbarry has enough dV in his jetpack to make a Kerbin intercept - I found this made it easier to rendezvous and saved about 2000 m/s dv as I was able to use my LKO velocity. The Catcher's Mitt lay in wait in LKO until Burbarry entered Kerbin's SOI. No subtlety here - just a large stack of liquid fuel tanks and nukes A few days past Kerbin's SOI, Burbarry rendezvoused with the rescue shuttle Half an orbit later, back at Kerbin Burbarry hopped into the rescue pod left in orbit earlier and was back at the KSC in no time Full mission album Download Craft file @Cpt Kerbalkrunch You complete lunatic! Using only chemical engines was an impressive feat. Stay tuned - I'm currently trying a cheapskate approach using chemical engines only. Using the K-E-K-K-J route you can get kicked out deep into the expanse for about 1,200 m/s dV. You can then flip your orbit really cheaply - however @Spricigo you're dead right about how ineffective gravity assist are when you're going retrograde. 5 reverse Eve assists barely dented my orbit, so my velocity relative to Bubarry was still 3,400 m/s. Back to the drawing board for now..
  5. If you're careful you could manage a round trip to Duna for about 3,200 m/s, just sayin'...
  6. No worries, will this do? Same simple ascent profile as before, point nose at 17.5° initially then leave it. Stage the sparks and nukes at maximum air breathing speed. Keep the nose pointing up until LF/O is exhausted, then lower nose slowly so that we "surf" just behind AP until orbit 60 kN of thrust from the nuke versus of craft mass of 13 tons gives a Mun TWR of over 2.5 making a regular landing straightforward...as we have some fuel to spare so let's see if we can liven things up a little. I hope we remembered to set the parking brake... To take off Bob had to perform the world's trickiest 3 point turn - those driving lessons paid off handsomely! Many many aero-braking passes later, back at KSC 502 science / 21.385 tons on runway = a score of 23.5 Full Album Link to Craft file @AeroGav Your designs aren't fat - they're curvaceous! Seriously though, I'm impressed how much you can get to orbit with such a low TWR
  7. @goduranus That's tough to answer as it will depend completely on your design (chemical/nuke, dry/wet ratio) To give you an indication, the final stage I used weighed just under 11 tons and had a vacuum dV of 6,200 m/s However it was already travelling upwards at 1500 m/s at the time I staged the nuke - as its TWR was relatively low this gave the nuke plenty of time to circularise. Even then it was pretty touch and go. dV is much better indicator. With a stock propeller design you'll be travelling upwards quite slowly (about 25-50 m/s) by the time you reach 125km altitude. You'll need substantially more than 6km/s dV to gain height and also a higher TWR than a pure nuke design. I'd budget another 1500 to 2000 m/s at least. With a command pod 10 tons feels like it won't be enough, you could either scale up your design or check with @SingABrightSong to see if command chair entries are acceptable
  8. Finding the right ratio of Panther/Nuke is certainly an interesting problem! I feel 2:1 Panther/Nuke is the most effective. 2:2 means you're carrying an extra 3 ton heavy nuke, I'd much rather have an extra 3 tons of fuel. 1:1 is essentially the same as 2:2 but much harder to design due to the asymmetry. A stretched version of my original entry is able to make LKO with between 3000 ~ 3100 m/s dV (depending on piloting skill ) enough to make it to the Mun and back with some to spare.
  9. @Cunjo Carl Interesting asymmetrical approach - out of curiosity what speed did the single panther top out at? PS Loved the landing!
  10. @pacovf Here's a simple Panther based spaceplane that I threw together to get you going... It'll get to LKO with about 2,000 dV total. Not enough for a Mun landing and return (about 2,700 m/s needed) but plenty for a Minimus jaunt (about 1,600 m/s total necessary). Ascent profile is straightforward, climb at 15° initially, the let the node rise naturally to about 20°. Stage the nuke and sparks at about 10km. The nuke on it's own doesn't have enough TWR, but the Sparks add enough punch to push AP far enough ahead in order to circularise. Bob went to Minimus and visited 2 biomes 30 km apart So I know you insisted for this challenge the biomes be at least 30km apart but normally what I do for a Minimus mission is land on a high plateau then simply roll downhill to each new biome, ending on a flat. Much cheaper than a sub-orbital hop. My 2 favourite routes, covering 4 and 5 biomes respectively are in the spoiler Full Album Craft File Download Link 1217.5 science was returned for an initial weight of 17.1 tons, for a total score of 71.2
  11. Watching these videos is so entertaining that I'm thinking of cancelling my Netflix subscription!
  12. @MiffedStarfish Nope, that was a pure stock entry, no exploits or any other funny business! The TR-2L wheels max out at 58 m/s so it's possible to go even faster (I was thinking of adding another pair of wheels for extra oomph but needed to leave room for the separatrons)
  13. Did it in 2:12...
  14. Neat - firing the probe's engine through the open cargo bay is SO Kerbal!
  15. As promised, here's a probe only "Basic" entry for less than 10K net - 7,925 funds to be precise! This required a completely different approach from the previous attempt. A robot SSTO the Slightly used Spaceplane carried a small Xenon powered probe the Fly By Night into LKO. The probe went to Moho and back bringing the small science experiments (thermometer, barometer, seisometer and gravity) then rendezvoused and re-docked in Kerbin orbit. The spaceplane then de-orbited and landed on the runway for full recovery costs. Interestingly the initial upfront cost was higher than the previous entry, due to the use of pricey aerospace parts and the ion thrusters. However as the only parts not recovered were a single FL-T400 tank and Spark engine, the net cost was mostly comprised of the fuel expended in the mission. Cost summary: Gross Cost √84,848 Spaceplane and probe recovery √76,923 Net cost √7,925 Cost breakdown: Slightly Used Spaceplane 560 Liquid Fuel + 374 Oxidiser √515 Disposable Booster FL-T400 + Spark √740 Fly By Night 1,667 Xenon √6,670 Some highlights: VAB Hilarious accidental Minimus intercept Landed on Moho Docking: Even more Docking Landing Recovery Full Album: Craft File