Repository navigation
Expand file tree
/
Copy pathindex.html
More file actions
1231 lines (1204 loc) · 49.5 KB
/
Copy pathindex.html
File metadata and controls
1231 lines (1204 loc) · 49.5 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta
name="description"
content="RocketPy is the next-generation open-source six-degree-of-freedom (6-DOF) rocket trajectory simulator for High-Power Rocketry — Monte Carlo dispersion, real weather data, solid/hybrid/liquid motors, and validated sub-1% apogee accuracy. Free and MIT-licensed."
/>
<meta
name="keywords"
content="RocketPy, rocket simulation, trajectory simulator, 6-DOF, six degrees of freedom, Monte Carlo, aerospace, rocketry, flight dynamics, open source, Python"
/>
<meta
property="og:title"
content="RocketPy - Advanced Rocket Trajectory Simulator"
/>
<meta
property="og:description"
content="The next-generation open-source 6-DOF rocket trajectory simulator. Monte Carlo dispersion, real weather data, validated to under 1% apogee error. Written in Python, MIT-licensed."
/>
<meta property="og:type" content="website" />
<meta property="og:url" content="https://rocketpy.org" />
<meta
property="og:image"
content="https://rocketpy.org/images/og-social-preview.png"
/>
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />
<meta name="twitter:card" content="summary_large_image" />
<meta
name="twitter:image"
content="https://rocketpy.org/images/og-social-preview.png"
/>
<meta
name="twitter:title"
content="RocketPy - Advanced Rocket Trajectory Simulator"
/>
<link rel="canonical" href="https://rocketpy.org/" />
<link rel="icon" href="./images/favicon.ico" type="image/x-icon" />
<link rel="manifest" href="./manifest.json" />
<meta name="theme-color" content="#030b28" />
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link rel="dns-prefetch" href="https://docs.rocketpy.org" />
<link rel="dns-prefetch" href="https://github.com" />
<link rel="dns-prefetch" href="https://discord.com" />
<link
href="https://fonts.googleapis.com/css2?family=Ruda:wght@400;700&family=Rubik:wght@400;500;700&family=Open+Sans:wght@300;400;500;700&display=swap"
rel="stylesheet"
/>
<link href="./css/main.css" rel="stylesheet" />
<link href="./css/nav.css" rel="stylesheet" />
<link href="./css/footer.css" rel="stylesheet" />
<link href="./css/home.css" rel="stylesheet" />
<link href="./css/font-awesome/css/fontawesome.min.css" rel="stylesheet" />
<link href="./css/font-awesome/css/solid.min.css" rel="stylesheet" />
<link href="./css/font-awesome/css/brands.min.css" rel="stylesheet" />
<!-- Without JS the scroll-reveal never fires; show everything up-front. -->
<noscript>
<style>
.reveal-section,
.reveal-item {
opacity: 1 !important;
transform: none !important;
}
</style>
</noscript>
<title>RocketPy - Advanced Rocket Trajectory Simulator</title>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "SoftwareApplication",
"name": "RocketPy",
"url": "https://rocketpy.org/",
"description": "Open-source six-degree-of-freedom (6-DOF) rocket trajectory simulator for aerospace engineering and High-Power Rocketry, with Monte Carlo dispersion analysis and real weather data.",
"applicationCategory": "Scientific",
"operatingSystem": "Linux, macOS, Windows",
"programmingLanguage": "Python",
"license": "https://opensource.org/licenses/MIT",
"codeRepository": "https://github.com/RocketPy-Team/RocketPy",
"downloadUrl": "https://pypi.org/project/rocketpy/",
"softwareVersion": "latest",
"author": {
"@type": "Organization",
"name": "RocketPy Team",
"url": "https://rocketpy.org/"
},
"sameAs": [
"https://github.com/RocketPy-Team/RocketPy",
"https://pypi.org/project/rocketpy/",
"https://www.linkedin.com/company/rocketpy",
"https://www.instagram.com/rocketpyteam"
]
}
</script>
</head>
<body>
<a href="#main" class="skip-link">Skip to content</a>
<div class="page-wrapper">
<header class="site-header" id="top">
<a
class="brand-link"
href="https://rocketpy.org"
aria-label="RocketPy home"
>
<span class="brand-logo"></span>
</a>
<nav class="nav-links" id="navLinks" aria-label="Primary">
<a class="nav-link" href="#features">Features</a>
<a class="nav-link" href="#showcase">Showcase</a>
<a class="nav-link" href="#ecosystem">Ecosystem</a>
<a
class="nav-link"
href="https://docs.rocketpy.org/en/latest/index.html"
>Docs</a
>
<a class="nav-link" href="#community">Community</a>
<a class="nav-link" href="./about.html">About</a>
</nav>
<div class="nav-actions">
<a
class="star-badge"
href="https://github.com/RocketPy-Team/RocketPy"
aria-label="Star RocketPy on GitHub"
>
<i class="fa-brands fa-github" aria-hidden="true"></i>
<i class="fa-solid fa-star" aria-hidden="true"></i>
<span data-stat="stars">1,021</span>
</a>
<a
href="https://app.rocketpy.org/"
class="simulate-button nav-cta"
role="button"
>
<span class="simulate-icon"></span>
<span>Simulate</span>
</a>
<button
class="nav-toggle"
type="button"
aria-label="Toggle menu"
aria-expanded="false"
aria-controls="navLinks"
>
<i class="fa-solid fa-bars" aria-hidden="true"></i>
</button>
</div>
</header>
<main class="main-content" id="main">
<!-- ============================ HERO =========================== -->
<section
class="hero-section panel-bg reveal-section"
aria-labelledby="hero-heading"
>
<div class="split-layout hero-layout">
<div class="text-column">
<p class="hero-kicker reveal-item">
Open source · 6-DOF rocket flight simulation
</p>
<h1 id="hero-heading" class="hero-tagline reveal-item">
The sky is not the limit!
</h1>
<p class="section-text hero-sub reveal-item">
RocketPy is the next-generation, open-source simulator for
High-Power Rocketry — a full six-degrees-of-freedom flight built
on real weather data, Monte Carlo-ready, and
<strong>validated to under 1% apogee error</strong> against real
launches.
</p>
<div class="install-chip reveal-item">
<code>pip install rocketpy</code>
<button
class="copy-btn"
type="button"
data-copy="pip install rocketpy"
aria-label="Copy install command"
>
<i class="fa-solid fa-copy" aria-hidden="true"></i>
</button>
</div>
<p class="install-hint reveal-item">
Python ≥ 3.10 · also on conda-forge · runs in Jupyter &
Google Colab
</p>
<div class="cta-buttons hero-ctas reveal-item">
<a
href="https://app.rocketpy.org/"
class="cta-btn cta-primary"
aria-label="Launch the RocketPy web app"
>
<span class="simulate-icon"></span>
<span>Simulate with RocketPy</span>
</a>
<a
href="https://docs.rocketpy.org/en/latest/index.html"
class="cta-btn cta-secondary"
>Read the docs</a
>
<a href="#quickstart" class="cta-btn cta-ghost">Quickstart ↓</a>
</div>
<p class="hero-microproof reveal-item">
MIT licensed ·
<strong><span data-stat="stars">1,021</span>★</strong>
on GitHub · 170k+ total downloads · used on 6 continents
</p>
</div>
<div class="media-column reveal-item">
<img
src="./images/hero-trajectory.svg"
alt="A rocket ascending along a simulated flight trajectory"
class="section-graphic hero-graphic"
decoding="async"
fetchpriority="high"
width="400"
height="320"
/>
</div>
</div>
</section>
<!-- ========================= STATS BAND ======================== -->
<section
class="content-section panel-bg reveal-section stats-band"
aria-labelledby="stats-heading"
>
<h2 id="stats-heading" class="sr-only">RocketPy by the numbers</h2>
<div class="stat-row">
<div class="stat-item reveal-item">
<span class="stat-num" data-stat="stars">1,021</span>
<span class="stat-label">GitHub stars</span>
</div>
<div class="stat-item reveal-item">
<span class="stat-num" data-stat="forks">268</span>
<span class="stat-label">Forks</span>
</div>
<div class="stat-item reveal-item">
<span class="stat-num" data-stat="contributors">75+</span>
<span class="stat-label">Contributors</span>
</div>
<div class="stat-item reveal-item">
<span class="stat-num" data-stat="downloads">25k+</span>
<span class="stat-label">Downloads (6 mo)</span>
</div>
<div class="stat-item reveal-item">
<span class="stat-num is-accent"><1%</span>
<span class="stat-label">Apogee error</span>
</div>
<div class="stat-item reveal-item">
<span class="stat-num">2018</span>
<span class="stat-label">Building since</span>
</div>
</div>
<p class="stats-note reveal-item">
Updated <span data-stat="updated">July 2026</span> ·
<a
class="text-link"
href="https://github.com/RocketPy-Team/RocketPy"
>star us on GitHub</a
>
</p>
</section>
<!-- ========================= QUICKSTART ======================== -->
<section
id="quickstart"
class="content-section panel-bg reveal-section"
aria-labelledby="quickstart-heading"
>
<div class="sec-head reveal-item">
<p class="sec-eyebrow">Quickstart</p>
<h2 id="quickstart-heading" class="sec-title">
Your first flight, in four classes
</h2>
<p class="sec-lede">
Describe the sky, the motor, and the rocket — RocketPy handles the
full 6-DOF physics. Here is a complete simulation of the
<em>Calisto</em> rocket, ready to run in a notebook or Google
Colab.
</p>
</div>
<div class="split-layout quickstart-layout">
<ol class="qs-steps reveal-item">
<li class="qs-step">
<span class="qs-num">1</span>
<div>
<h3><code>Environment</code></h3>
<p>
Pull real forecast, reanalysis or sounding data for launch
day.
</p>
</div>
</li>
<li class="qs-step">
<span class="qs-num">2</span>
<div>
<h3><code>Motor</code></h3>
<p>
Pick a variant —
<code>SolidMotor</code>, <code>HybridMotor</code>,
<code>LiquidMotor</code> or <code>GenericMotor</code> — each
built from its thrust curve and geometry.
</p>
</div>
</li>
<li class="qs-step">
<span class="qs-num">3</span>
<div>
<h3><code>Rocket</code></h3>
<p>
Add nose cone, fins, tail and parachutes with real
aerodynamics.
</p>
</div>
</li>
<li class="qs-step">
<span class="qs-num">4</span>
<div>
<h3><code>Flight</code></h3>
<p>Launch it and explore trajectory, forces and recovery.</p>
</div>
</li>
</ol>
<div class="qs-code reveal-item">
<pre
class="code-block"
><button class="copy-btn" type="button" aria-label="Copy code"><i class="fa-solid fa-copy" aria-hidden="true"></i><span class="copy-label">Copy</span></button><code><span class="tok-kw">from</span> rocketpy <span class="tok-kw">import</span> <span class="tok-cls">Environment</span>, <span class="tok-cls">SolidMotor</span>, <span class="tok-cls">Rocket</span>, <span class="tok-cls">Flight</span>
<span class="tok-com"># 1 · Describe the sky — real forecast weather</span>
env = <span class="tok-cls">Environment</span>(latitude=<span class="tok-num">32.99</span>, longitude=-<span class="tok-num">106.97</span>, elevation=<span class="tok-num">1400</span>)
env.<span class="tok-fn">set_atmospheric_model</span>(type=<span class="tok-str">"Forecast"</span>, file=<span class="tok-str">"GFS"</span>)
<span class="tok-com"># 2 · Build the motor (SolidMotor here — also Hybrid/Liquid/Generic)</span>
motor = <span class="tok-cls">SolidMotor</span>(
thrust_source=<span class="tok-str">"Cesaroni_M1670.eng"</span>,
dry_mass=<span class="tok-num">1.815</span>, grain_number=<span class="tok-num">5</span>, nozzle_radius=<span class="tok-num">0.033</span>,
)
<span class="tok-com"># 3 · Assemble the rocket</span>
calisto = <span class="tok-cls">Rocket</span>(radius=<span class="tok-num">0.0635</span>, mass=<span class="tok-num">14.426</span>, inertia=(<span class="tok-num">6.32</span>, <span class="tok-num">6.32</span>, <span class="tok-num">0.034</span>))
calisto.<span class="tok-fn">add_motor</span>(motor, position=-<span class="tok-num">1.255</span>)
calisto.<span class="tok-fn">add_nose</span>(length=<span class="tok-num">0.558</span>, kind=<span class="tok-str">"von karman"</span>, position=<span class="tok-num">1.278</span>)
calisto.<span class="tok-fn">add_trapezoidal_fins</span>(n=<span class="tok-num">4</span>, root_chord=<span class="tok-num">0.12</span>, tip_chord=<span class="tok-num">0.06</span>, span=<span class="tok-num">0.11</span>)
calisto.<span class="tok-fn">add_parachute</span>(<span class="tok-str">"Main"</span>, cd_s=<span class="tok-num">10.0</span>, trigger=<span class="tok-num">800</span>)
<span class="tok-com"># 4 · Fly it — full 6-DOF simulation</span>
flight = <span class="tok-cls">Flight</span>(rocket=calisto, environment=env, rail_length=<span class="tok-num">5.2</span>)
flight.<span class="tok-fn">all_info</span>()</code></pre>
</div>
</div>
<div class="cta-buttons qs-ctas reveal-item">
<a
href="https://colab.research.google.com/github/RocketPy-Team/RocketPy/blob/master/docs/notebooks/getting_started_colab.ipynb"
class="cta-btn cta-primary"
>
<i class="fa-solid fa-play" aria-hidden="true"></i>
<span>Open in Colab</span>
</a>
<a
href="https://docs.rocketpy.org/en/latest/user/first_simulation.html"
class="cta-btn cta-secondary"
>Full getting-started guide</a
>
</div>
</section>
<!-- ========================== SHOWCASE ========================= -->
<section
id="showcase"
class="content-section panel-bg reveal-section"
aria-labelledby="showcase-heading"
>
<div class="sec-head reveal-item">
<p class="sec-eyebrow">See what it produces</p>
<h2 id="showcase-heading" class="sec-title">
Publication-grade results
</h2>
<p class="sec-lede">
One simulation yields the full picture — 3D trajectory,
kinematics, stability, and the statistical landing footprint that
matters for a safe recovery.
</p>
</div>
<div class="showcase-grid">
<figure class="showcase-card reveal-item">
<div class="showcase-figure">
<img
src="./images/showcase/flight-3d.svg"
alt="A three-dimensional flight trajectory arcing over a ground grid"
loading="lazy"
decoding="async"
width="400"
height="320"
/>
</div>
<figcaption class="showcase-cap">
<h3>3D trajectory</h3>
<p>
Full flight path in space — exportable to Google Earth via
KML.
</p>
</figcaption>
</figure>
<figure class="showcase-card reveal-item">
<div class="showcase-figure">
<img
src="./images/monte-carlo-dispersion.svg"
alt="Monte Carlo impact dispersion with a confidence ellipse around the target"
loading="lazy"
decoding="async"
width="400"
height="320"
/>
</div>
<figcaption class="showcase-cap">
<h3>Monte Carlo dispersion</h3>
<p>
Thousands of runs give the landing ellipse and its confidence
interval.
</p>
</figcaption>
</figure>
<figure class="showcase-card reveal-item">
<div class="showcase-figure">
<img
src="./images/showcase/altitude-speed.svg"
alt="Altitude and velocity plotted against time, peaking at apogee"
loading="lazy"
decoding="async"
width="400"
height="320"
/>
</div>
<figcaption class="showcase-cap">
<h3>Altitude & velocity</h3>
<p>Every flight variable resolved continuously versus time.</p>
</figcaption>
</figure>
<figure class="showcase-card reveal-item">
<div class="showcase-figure">
<img
src="./images/showcase/stability-margin.svg"
alt="Static stability margin over time staying inside the stable band"
loading="lazy"
decoding="async"
width="400"
height="320"
/>
</div>
<figcaption class="showcase-cap">
<h3>Stability margin</h3>
<p>
Track the static margin through the burn to stay in control.
</p>
</figcaption>
</figure>
</div>
<p class="sec-cta">
<a
class="text-link"
href="https://docs.rocketpy.org/en/latest/examples/index.html"
>Explore worked examples in the docs →</a
>
</p>
</section>
<!-- ========================== FEATURES ========================= -->
<section
id="features"
class="content-section panel-bg reveal-section"
aria-labelledby="features-heading"
>
<div class="sec-head reveal-item">
<p class="sec-eyebrow">Capabilities</p>
<h2 id="features-heading" class="sec-title">
Everything a serious flight needs
</h2>
<p class="sec-lede">
High-fidelity physics under the hood, a clean Python API on top —
from propulsion to recovery, weather to control.
</p>
</div>
<div
class="feat-marquee"
data-marquee
aria-label="Feature highlights, auto-scrolling"
>
<div class="marquee-track">
<article class="feat-card reveal-item">
<span class="feat-icon"><i class="fa-solid fa-cube"></i></span>
<h3>Full 6-DOF flight</h3>
<p>
Nonlinear six-degrees-of-freedom dynamics with rigorous
variable-mass effects.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"><i class="fa-solid fa-dice"></i></span>
<h3>Monte Carlo & sensitivity</h3>
<p>
Dispersion analysis and global sensitivity for landing-ellipse
prediction.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"><i class="fa-solid fa-fire"></i></span>
<h3>Solid, hybrid & liquid motors</h3>
<p>
Model any propulsion type straight from a thrust curve or
<code>.eng</code> file.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"><i class="fa-solid fa-plane"></i></span>
<h3>Aerodynamic surfaces</h3>
<p>
Nose cones, fins and tails via Barrowman equations, plus
custom drag curves.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-umbrella"></i
></span>
<h3>Parachutes & recovery</h3>
<p>
Multiple chutes with custom trigger functions and sensor-noise
simulation.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-cloud-sun-rain"></i
></span>
<h3>Real weather & atmosphere</h3>
<p>
ISA 1976, Wyoming soundings and live NOAA / ECMWF forecast and
ensemble data.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-layer-group"></i
></span>
<h3>Multi-stage rockets</h3>
<p>
Simulate staged vehicles with independent motors, events and
recovery.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-sliders"></i
></span>
<h3>Custom control laws</h3>
<p>
Inject continuous or discrete control for fins, air-brakes and
active systems.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-gauge-high"></i
></span>
<h3>Stability analysis</h3>
<p>
Static margin, damping and out-of-rail conditions resolved
across the flight.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-satellite-dish"></i
></span>
<h3>Sensor simulation</h3>
<p>
Emulate accelerometers, gyroscopes and barometers with
realistic noise.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-file-export"></i
></span>
<h3>MATLAB & Python interop</h3>
<p>
Script it in Python or drive it from MATLAB — and export
results anywhere.
</p>
</article>
<article class="feat-card reveal-item">
<span class="feat-icon"
><i class="fa-solid fa-earth-americas"></i
></span>
<h3>KML / Google Earth</h3>
<p>
Export trajectories to KML and fly them over real terrain in
Google Earth.
</p>
</article>
</div>
</div>
</section>
<!-- ==================== VALIDATION + USED BY ==================== -->
<section
id="validation"
class="content-section panel-bg reveal-section"
aria-labelledby="validation-heading"
>
<div class="split-layout validation-layout">
<div class="text-column validation-head reveal-item">
<p class="sec-eyebrow">Proven in the field</p>
<p class="big-stat"><1%</p>
<h2 id="validation-heading" class="section-title">
Apogee error versus real flights
</h2>
<p>
Because RocketPy flies on the actual sky — real forecast,
reanalysis and sounding data — its predictions match reality. It
has been validated against
<strong>17 documented real flights</strong> from student and
professional teams across four continents.
</p>
</div>
<div class="media-column reveal-item">
<img
src="./images/environment-atmosphere.svg"
alt="Atmospheric layers and weather sounding data above a planet horizon"
class="section-graphic"
loading="lazy"
decoding="async"
width="400"
height="320"
/>
</div>
</div>
<p class="usedby-label reveal-item">
Flown & validated by teams worldwide
</p>
<ul class="inst-grid">
<li class="inst-card reveal-item">
<span class="inst-name">Projeto Jupiter — USP</span>
<span class="inst-place">São Paulo, Brazil</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">EPFL Rocket Team</span>
<span class="inst-place">Lausanne, Switzerland</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">University of Notre Dame</span>
<span class="inst-place">Indiana, USA</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">Space Enterprise at Berkeley</span>
<span class="inst-place">California, USA</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">U. of Toronto Aerospace</span>
<span class="inst-place">Toronto, Canada</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">TU Wien Space Team</span>
<span class="inst-place">Vienna, Austria</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">Faraday Rocketry UPV</span>
<span class="inst-place">Valencia, Spain</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">Politecnico di Torino</span>
<span class="inst-place">Turin, Italy</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">Aerospace Team Graz</span>
<span class="inst-place">Graz, Austria</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">STAR — UC3M</span>
<span class="inst-place">Madrid, Spain</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">Aristotle Space & Aeronautics</span>
<span class="inst-place">Thessaloniki, Greece</span>
</li>
<li class="inst-card reveal-item">
<span class="inst-name">BME Suborbitals</span>
<span class="inst-place">Budapest, Hungary</span>
</li>
</ul>
<p class="contrib-note">
RocketPy is the
<strong
>official flight simulator of the European Rocketry Challenge
(EuRoC)</strong
>
since 2022 and of the
<strong>Latin American Space Challenge (LASC)</strong> since 2025 —
and the RocketPy team actively supports and partners with both. It
is trusted by 100+ university teams worldwide, including at the
Spaceport America Cup.
<a href="https://docs.rocketpy.org/en/latest/examples/index.html"
>See all validation examples →</a
>
</p>
</section>
<!-- ========================= ECOSYSTEM ========================= -->
<section
id="ecosystem"
class="content-section panel-bg reveal-section"
aria-labelledby="ecosystem-heading"
>
<div class="sec-head reveal-item">
<p class="sec-eyebrow">The constellation</p>
<h2 id="ecosystem-heading" class="sec-title">
One ecosystem, from design to flight
</h2>
<p class="sec-lede">
RocketPy is more than a library. A whole toolchain surrounds it —
import your designs, call it over an API, or simulate right in the
browser.
</p>
</div>
<div class="eco-grid">
<a
class="eco-card"
href="https://github.com/RocketPy-Team/RocketPy"
>
<div class="eco-head">
<span class="eco-icon"><i class="fa-solid fa-rocket"></i></span>
<span class="eco-name">RocketPy</span>
<span class="eco-badge"
><i class="fa-solid fa-star"></i>
<span data-stat="stars">1,021</span></span
>
</div>
<p class="eco-desc">
The core 6-DOF simulation engine.
<code>pip install rocketpy</code>
and you are flying.
</p>
<span class="eco-link">View the core library →</span>
</a>
<a
class="eco-card"
href="https://github.com/RocketPy-Team/RocketSerializer"
>
<div class="eco-head">
<span class="eco-icon"
><i class="fa-solid fa-file-import"></i
></span>
<span class="eco-name">RocketSerializer</span>
<span class="eco-badge"
><i class="fa-solid fa-star"></i> 32</span
>
</div>
<p class="eco-desc">
Convert your OpenRocket <code>.ork</code> designs into
ready-to-run RocketPy simulations.
</p>
<span class="eco-link">Import from OpenRocket →</span>
</a>
<a
class="eco-card"
href="https://github.com/RocketPy-Team/Infinity-API"
>
<div class="eco-head">
<span class="eco-icon"><i class="fa-solid fa-plug"></i></span>
<span class="eco-name">Infinity-API</span>
<span class="eco-badge"
><i class="fa-solid fa-star"></i> 9</span
>
</div>
<p class="eco-desc">
A RESTful Open API — and an MCP server — to run RocketPy from
any app or AI agent.
</p>
<span class="eco-link">Explore the API →</span>
</a>
<a class="eco-card" href="https://app.rocketpy.org/">
<div class="eco-head">
<span class="eco-icon"
><i class="fa-solid fa-window-maximize"></i
></span>
<span class="eco-name">Jarvis</span>
</div>
<p class="eco-desc">
RocketPy's web app — simulate in your browser, no install
required. Point, configure, launch.
</p>
<span class="eco-link">Open Jarvis →</span>
</a>
<a
class="eco-card"
href="https://docs.rocketpy.org/en/latest/index.html"
>
<div class="eco-head">
<span class="eco-icon"><i class="fa-solid fa-book"></i></span>
<span class="eco-name">Docs</span>
</div>
<p class="eco-desc">
Getting started, user guide, full API reference and a
contributor's guide.
</p>
<span class="eco-link">Read the documentation →</span>
</a>
</div>
</section>
<!-- ========================= COMMUNITY ========================= -->
<section
id="community"
class="content-section panel-bg reveal-section"
aria-labelledby="community-heading"
>
<div class="sec-head reveal-item">
<p class="sec-eyebrow">From rocketeers to rocketeers</p>
<h2 id="community-heading" class="sec-title">
Built by a global community
</h2>
</div>
<div class="split-layout">
<div class="community-lede reveal-item align-left">
<p>
RocketPy is free and <strong>MIT-licensed</strong>. It was born
inside <strong>Projeto Jupiter</strong>, the student rocketry
team at the University of São Paulo, Brazil — and grew into the
world's leading open-source trajectory simulator, maintained by
contributors on six continents.
</p>
<p>
Everyone is welcome. Ask a question, report an idea, or ship a
pull request.
<a href="./about.html">Meet the people behind RocketPy →</a>
</p>
<div class="cta-buttons justify-start">
<a
href="https://github.com/RocketPy-Team/RocketPy"
class="cta-btn cta-primary"
>
<i class="fa-brands fa-github" aria-hidden="true"></i>
<span>Contribute on GitHub</span>
</a>
<a
href="https://discord.com/invite/b6xYnNh"
class="cta-btn cta-secondary"
>
<i class="fa-brands fa-discord" aria-hidden="true"></i>
<span>Join our Discord</span>
</a>
</div>
</div>
<div class="media-column reveal-item">
<img
src="./images/community-network.svg"
alt="A connected network of RocketPy contributors around a central hub"
class="section-graphic"
loading="lazy"
decoding="async"
width="400"
height="320"
/>
</div>
</div>
<div class="channels mt-content">
<a
class="channel-card reveal-item"
href="https://github.com/RocketPy-Team"
>
<i class="fa-brands fa-github"></i><span>GitHub</span>
</a>
<a
class="channel-card reveal-item"
href="https://discord.com/invite/b6xYnNh"
>
<i class="fa-brands fa-discord"></i><span>Discord</span>
</a>
<a
class="channel-card reveal-item"
href="https://www.reddit.com/r/RocketPy/"
>
<i class="fa-brands fa-reddit"></i><span>Reddit</span>
</a>
<a
class="channel-card reveal-item"
href="https://www.linkedin.com/company/rocketpy"
>
<i class="fa-brands fa-linkedin"></i><span>LinkedIn</span>
</a>
<a
class="channel-card reveal-item"
href="https://www.instagram.com/rocketpyteam"
>
<i class="fa-brands fa-instagram"></i><span>Instagram</span>
</a>
<a
class="channel-card reveal-item"
href="https://www.youtube.com/@rocketpyteam5828"
>
<i class="fa-brands fa-youtube"></i><span>YouTube</span>
</a>
<a
class="channel-card reveal-item"
href="https://github.com/sponsors/RocketPy-Team"
>
<i class="fa-solid fa-heart"></i><span>Sponsor</span>
</a>
<a
class="channel-card reveal-item"
href="https://linktr.ee/rocketpyteam"
>
<i class="fa-solid fa-link"></i><span>Linktree</span>
</a>
</div>
</section>
<!-- ========================== HOW TO CITE ====================== -->
<section
id="cite"
class="content-section panel-bg reveal-section"
aria-labelledby="cite-heading"
>
<div class="sec-head reveal-item">
<p class="sec-eyebrow">For researchers</p>
<h2 id="cite-heading" class="sec-title">Using RocketPy? Cite it</h2>
<p class="sec-lede">
RocketPy is peer-reviewed. If it supports your research, please
cite the papers below.
</p>
</div>
<div class="cite-grid">
<div class="cite-item reveal-item">
<h3>
RocketPy: Six Degree-of-Freedom Rocket Trajectory Simulator
</h3>
<p class="cite-meta">
Ceotto, G. H.; Schmitt, R. N.; Alves, G. F.; Pezente, L. A.;
Carmo, B. S. (2021). <em>Journal of Aerospace Engineering</em>,
34(6). ASCE.
<a
href="https://ascelibrary.org/doi/10.1061/%28ASCE%29AS.1943-5525.0001331"
>doi:10.1061/(ASCE)AS.1943-5525.0001331</a
>
</p>
</div>
<div class="cite-item reveal-item">
<h3>RocketPy: Combining Open-Source and Scientific Libraries…</h3>
<p class="cite-meta">
Soares et al. (2022).
<em>Proceedings of the Python in Science Conference (SciPy)</em
>.
<a
href="https://proceedings.scipy.org/articles/majora-212e5952-020"
>doi:10.25080/majora-212e5952-020</a
>
</p>
</div>
</div>
<div class="cite-bibtex reveal-item">
<pre
class="code-block"
><button class="copy-btn" type="button" aria-label="Copy BibTeX"><i class="fa-solid fa-copy" aria-hidden="true"></i><span class="copy-label">Copy BibTeX</span></button><code>@article{RocketPy2021,
author = {Ceotto, Giovani H. and Schmitt, Rodrigo N. and
Alves, Guilherme F. and Pezente, Lucas A. and Carmo, Bruno S.},
title = {{RocketPy}: Six Degree-of-Freedom Rocket Trajectory Simulator},
journal = {Journal of Aerospace Engineering},
volume = {34},
number = {6},
year = {2021},
doi = {10.1061/(ASCE)AS.1943-5525.0001331}
}</code></pre>
</div>
</section>
<!-- ========================= FINAL CTA ========================= -->
<section
class="content-section panel-bg reveal-section final-cta"
aria-labelledby="final-heading"
>
<p class="sec-eyebrow reveal-item">Ready for liftoff?</p>
<h2 id="final-heading" class="sec-title reveal-item">
Start simulating in minutes
</h2>
<div class="install-chip reveal-item">
<code>pip install rocketpy</code>
<button
class="copy-btn"
type="button"
data-copy="pip install rocketpy"
aria-label="Copy install command"
>
<i class="fa-solid fa-copy" aria-hidden="true"></i>
</button>