Aerospace Engineer vs Mechanical Engineer
Which automation-resistant career is right for you? A side-by-side look at exposure score, salary, training, and demand.
Comparing These Careers
Aerospace engineering and mechanical engineering are the textbook pair of neighbouring degrees. Many universities teach them side by side, some offer a dual program, and a first-year engineering student often has to pick one. The two share a core of statics, thermodynamics, materials and CAD, and both are four to five year bachelor's-degree careers. O*NET lists Mechanical Engineers among the related occupations for Aerospace Engineers, so the overlap is recognised in the official occupational data too.
The real question behind the search is narrower than "which is better". Aerospace is the specialty, tied to aircraft, spacecraft and defense programs. Mechanical is the generalist field, spread across machinery, vehicles, electronics and consulting. This site rates them differently on AI: Aerospace Engineer is "AI-resistant despite the paperwork" and Mechanical Engineer is "At risk", even though Aerospace Engineer has the lower raw exposure score (12 versus 25 out of 100, where lower means more exposed). This page explains why.
| Metric | Aerospace Engineer | Mechanical Engineer |
|---|---|---|
| Automation Risk Score | 12/100 | 25/100 |
| Stability Rating | Higher Risk | Higher Risk |
| Salary Range (USD) | $86,700 - $205,890 | $73,990 - $164,340 |
| Average Salary (USD) | $134,960/yr | $113,610/yr |
| Demand Level | High | High |
| Growth Outlook | Strong | Strong |
Why Aerospace Engineer is higher risk
Aerospace Engineer scores 12/100 on this site's structural exposure measure, which puts it in the Higher Risk band. That number is not a quirk. Concept studies, aerodynamic and structural analysis, requirements documents and test reports are computer-mediated, technical-language work, which is exactly what the OpenAI and AIOE pillars rate as exposed. The research verdict is "AI-resistant despite the paperwork" at Medium confidence, and the reasoning is narrower than for some other engineering jobs here.
The protection is not a personal license. Civil and environmental engineers are shielded by the Professional Engineer stamp, but BLS says licensure is not required for entry-level aerospace positions and a PE is optional, earned by experienced engineers who want to sign off projects. Aerospace is protected differently, through certification. Under 14 CFR 21.
33, the applicant must carry out the inspections and tests that show an aircraft, engine or propeller meets the airworthiness requirements, and must allow the FAA to run its own flight and ground tests. Under 14 CFR 183. 11, the FAA's Aircraft Certification Service may select designated engineering representatives from qualified applicants, and 14 CFR 183. 29 sets out their categories, such as structural, power plant, systems and equipment, and flight analyst.
They approve engineering data within limits prescribed by, and under the general supervision of, the Administrator.
AI is already in the workflow, and it is worth being specific about where. An Aerospace America feature of 1 October 2026 reports that GE Aerospace used generative AI to produce a preliminary hypersonic ramjet design in seconds, a task that normally takes months, and that GE uses it only in early-stage design.
Airbus announced a partnership with Mistral AI on 28 May 2026 whose named uses include AI-driven simulation to optimize parts and "ad-hoc support to engineers" through development, test and certification. NVIDIA reported in November 2025 that Northrop Grumman built an AI surrogate for nozzle simulation on Luminary Cloud's platform, intended to let engineers explore thousands of designs quickly. That last item is a stated expectation, not a measured result.
Regulators are keeping a human accountable. According to the same Aerospace America article, EASA requires human oversight and does not currently allow one AI tool to verify another's preliminary design, while the FAA treats AI as a tool within its existing framework and lets applicants propose their own means of compliance, subject to FAA acceptance. Both regulators favor starting with non-safety-critical uses.
The article also notes that regulators expect engineers to show how each part was designed, and a Rolls-Royce executive quoted there says current AI tools cannot meet that standard. Engineers still run the physical component and engine tests and build the compliance record.
What this does not show matters just as much. A certification wall protects the sign-off and the test campaign, not the number of analysts needed to prepare them. If simulation becomes ten times faster, a program may need fewer people doing routine analysis, and entry-level analyst work is the most plausible place for that to appear. We searched for a named case of aerospace engineers being cut because of AI and found none.
This is an absence of evidence, not proof of safety.
The demand data points the other way for now. BLS projects employment to grow from 68,700 in 2025 to 74,400 in 2035, a gain of 5,700 jobs and 8%, against 3% for all occupations, with about 3,800 openings a year. The median engineer earned $134,960 in May 2025. In practice the engineers best placed are those who can check an AI-generated result against physics, defend it to a regulator and run the test that proves it.
Why Mechanical Engineer is higher risk
Mechanical Engineer scores 25 out of 100 on this site's structural exposure measure, in the Higher Risk band (lower means more exposed; the exposure gauge above shows the same reading as 75). The score comes from OpenAI's task-exposure ratings (0. 37 on a 0 to 1 scale) and the AIOE index; see the methodology page for its limits. The work behind it is mostly analysis, modeling, calculation and documentation, all of which language and reasoning models handle in part.
Under this site's research checklist, a low score is offset only by a legal wall or a physical requirement, and for this occupation both are thin.
The licensing protection is real but partial. All states require a Professional Engineer (PE) license for mechanical engineers who sell services to the public. The usual route is an accredited degree, the Fundamentals of Engineering exam, about four years of experience and then the PE exam. BLS also says licensure is not required for entry-level positions.
According to a 2024 PE-licensing explainer (NoonPi, a secondary source), many states add an industrial exemption: an employee of a manufacturer does engineering that is incidental to the employer's products, and the employer, not a sealing PE, carries the liability. The same explainer quotes NSPE recommending that these exemptions be phased out, but they exist today.
Where a stamp does apply, the professional bodies we read say a human must stay in charge of AI output. In July 2024 the NSPE Board of Ethical Review found that an engineer who sealed AI-drafted design documents after a cursory review had not kept responsible charge. In January 2026 the Interorganizational Council on Regulation, which includes engineering regulators, said "Oversight cannot be automated.
" Because a large share of employment is in manufacturing, the stamp requirement covers only part of the occupation. That is our inference from the BLS industry shares, not a measured figure.
Physical presence adds little cover. BLS says mechanical engineers generally work in offices, so this page cannot lean on the hands-on protection that shields trades such as electricians. Worksite visits happen when equipment or a problem needs attention, but they are the exception rather than the shape of the job.
AI is already inside the workflow. Generative design and topology optimization ship in Autodesk Fusion, PTC Creo and Altair Inspire. Ansys SimAI trains on past simulation results to predict how a new design will behave. CoLab's AutoReview checks drawings and CAD before formal design reviews.
Trade press reports that Sumitomo Riko uses SimAI to get predictions in under five minutes, saving more than an hour per new design, with accuracy "comparable to high-fidelity simulation" according to Ansys; we found no independent validation. These tools speed up analysis and review. None of the sources we read reports a named employer cutting mechanical engineering headcount because of them.
Real-world usage is moderate, not extreme. Microsoft's study of Copilot conversations scores Mechanical Engineers at 0. 257 on AI applicability, just under the site's High cutoff (0. 2574), so the band is Medium. Anthropic's Economic Index scores the occupation at 0. 081, close to the 0. 077 average across 756 occupations.
Anthropic's March 2026 labor-market study found no systematic rise in unemployment among highly exposed workers since late 2022, but suggestive evidence (the authors call it tentative) that hiring of 22 to 25 year olds into exposed occupations has slowed. It did not single out engineering, so entry-level hiring is the figure to watch.
Demand points the other way. BLS projects 11.2% growth from 2025 to 2035 (the Handbook rounds this to 11 percent), much faster than average, an increase of about 33,500 jobs, with roughly 17,800 openings a year. That is a forecast from one vintage, and the OOH page gives no breakdown by experience level.
Why the verdict is At risk. The exposure score says exposed, the protections are partial, and the labor data says growing. The checklist says to apply its rubric rather than override it: a score of 25, a license that is not required at entry level and is often exempted in industry, and mostly office-based work add up to At risk.
We hold it at Medium confidence because the growth data and the absence of documented headcount cuts pull the other way, and we flag the score for review. The label describes task exposure with no strong legal or physical wall, not a forecast of job losses. Evidence that would change the picture: named employers reducing mechanical design headcount because of AI, or discipline-level data showing entry-level mechanical hiring falling.
If you would rather lean on a wall than on skill, the alternatives below put hands-on work or physical systems at the center. Each is a skill-transfer judgment, not documented transition data.
Who should choose Aerospace Engineer?
Aerospace engineering suits someone who already knows they want to work on aircraft, spacecraft, satellites or missiles, and who would rather specialise early than keep options wide. It fits people who like test campaigns, certification documents and failure investigations, because those are the parts of the job where regulators expect a named human to be accountable.
It also fits someone who can live with a smaller, more concentrated market. About 15% of jobs are in the federal government, and defense programs can require a security clearance, some levels of which require US citizenship. If that rules you out, a share of the openings is closed to you. Our reading, not a measured finding, is that any AI-driven change is more likely to reach the entry-level analyst seat than the senior sign-off role.
Who should choose Mechanical Engineer?
Mechanical engineering suits someone who wants flexibility: the largest employers are consulting and design firms, machinery makers, vehicle makers, research and development services, and electronics makers, so you can change industry without changing career. It fits someone who likes the whole product, from CAD and analysis to prototypes and manufacturing tolerances.
It also suits anyone willing to treat the PE license as a goal. BLS says licensure is not required at entry level, but it is required to sell services to the public, and it is the clearest personal accountability this occupation has.
Go in knowing the verdict is "At risk" at Medium confidence: AI design and simulation tools are already in the workflow, so the engineer who can check a result against physics and defend it will be better placed than one who only produces models.
What Actually Sets These Careers Apart
The two scores point one way and the two verdicts point the other, and the reason is where each job's accountability sits.
Aerospace Engineer scores 12 out of 100 and Mechanical Engineer 25, so on task exposure alone the aerospace work looks more exposed. Both are mostly computer work: BLS says aerospace engineers usually work in an office, often at a computer, and says mechanical engineers generally work in offices too. Neither job gets protection from physical presence. The verdicts differ because of what sits around the design work.
For aerospace, the wall is certification. Under 14 CFR 21. 33 the applicant must carry out the inspections and tests that show an aircraft, engine or propeller meets airworthiness requirements, and the FAA can run its own tests. Under 14 CFR 183. 29, FAA-designated engineering representatives approve engineering data within limits the FAA sets.
We count this as a borderline wall: the duty sits with the applicant company and a small number of FAA-selected engineers, not with every engineer doing the analysis, which is close to the "qualifying party" pattern our research checklist treats with caution. It protects sign-off and the test campaign, not analyst headcount, and the verdict is held at Medium confidence. There is no personal license requirement: BLS says licensure is not required for entry-level aerospace positions.
For mechanical, the wall is the PE license, and BLS says all states require licensure for mechanical engineers who sell services to the public, but not at entry level. Our Mechanical Engineer page adds that many states exempt in-house engineers at manufacturers, and that the occupation's largest employer group, architectural, engineering and related services, is 20% of jobs while machinery and transportation equipment manufacturing together are 24%.
The stamp therefore covers only part of the occupation, which is our inference from those industry shares, not a measured figure. A license that much of the field can work without is not treated as a wall by our checklist, so the rubric gives At risk.
The demand data runs the opposite way from the exposure data. BLS projects 11% growth for mechanical engineers from 2025 to 2035 (about 33,500 jobs and 17,800 openings a year) against 8% for aerospace (about 5,700 jobs and 3,800 openings a year). The mechanical occupation is roughly four times the size, 298,500 jobs against 68,700 (our ratio).
The practical effect is that aerospace is the better-defended but smaller and more concentrated market, with 38% of jobs in aerospace product and parts manufacturing and 15% in the federal government.
Pay follows the same split. Comparing medians, BLS reports $134,960 for aerospace and $104,110 for mechanical (both May 2025), a gap of $30,850 that we computed ourselves. Our Mechanical Engineer page shows a $113,610 mean, so it is not directly comparable with the aerospace median.
Real-World Considerations
Demand Level
Aerospace Engineer: High demand, Strong outlook (8.3% (2025-2035), much faster than average)
Mechanical Engineer: High demand, Strong outlook (11.2% (2025-2035), much faster than average)
Switching Between These Careers
The two fields share a common core, so the move is easier than between most careers. CAD, MATLAB-style modeling, failure investigation and testing appear in both jobs' skill lists (aerospace adds stress testing, mechanical finite-element and thermal-fluid analysis), and both are bachelor's-degree entry. A mechanical engineer moving toward aerospace mostly needs domain knowledge and context: aerodynamics, flight structures, airworthiness documentation and, for defense work, clearance eligibility.
The most realistic routes are an employer that does both, such as transportation equipment manufacturing, or a master's degree in aerospace; the 5-year bachelor's/master's route BLS mentions for aerospace is one example. Neither BLS page documents this switch, so treat it as our judgment, not measured transition data.
Moving from aerospace to mechanical is usually shorter, because mechanical employers are broader and a PE route is open to either, after an accredited degree, the FE exam, several years of experience and the PE exam. What does not transfer cleanly is the certification experience and the clearance. For a mechanical engineer worried about the "At risk" label, the move toward test, failure analysis and certification-style accountability is the part worth building, whichever industry you end up in.
The internships and co-op placements that BLS mentions for aerospace, and that our Mechanical Engineer page lists as common, are a low-cost way to try each side before committing.
Our Verdict
Neither job is an unqualified safe choice, and the two verdicts rest on different things. Aerospace Engineer is rated "AI-resistant despite the paperwork" at Medium confidence because certification and test accountability keep humans responsible, a borderline call since that duty sits with the company and FAA-designated engineers rather than every engineer, and its median pay of $134,960 is about $30,850 above mechanical's $104,110 median.
Mechanical Engineer is rated "At risk" at Medium confidence: its score of 25 is less exposed than aerospace's 12, but its license protection is partial, so the rubric finds no wall. BLS still projects faster growth, 11% against 8%, and our Mechanical Engineer page flags its exposure score for review because of that tension.
If your priority is the stronger structural defense and the higher pay, and you are comfortable with a narrower market tied to aircraft, space and defense programs, aerospace is the better fit. If your priority is breadth of employers and the larger projected number of openings, mechanical keeps more doors open, but plan to build the parts of the job an AI tool cannot sign for, such as testing, failure investigation and PE responsibility.
Both labels describe task exposure, not forecasts of job losses, and we found no documented AI-attributed cuts in either field.