Messerschmitt Me 163 Komet
Messerschmitt · Rocket Interceptor / Rocket-powered Interceptor · Germany · WWII (1939–1945)
The Messerschmitt Me 163 Komet ("Comet") was a German rocket-powered single-seat interceptor — the only rocket-powered fighter to enter in-service combat service in history. Alexander Lippisch designed the Me 163 in 1937-1941 at the Deutsche Forschungsanstalt für Segelflug; the prototype first flew under rocket power on 13 August 1941. About 370 Me 163s were built between 1943 and 1945 at Messerschmitt Augsburg + Klemm + Junkers. The aircraft entered Luftwaffe service in May 1944 + saw limited combat use through 1945 with mixed effectiveness.
The Me 163B used a Walter HWK 109-509 liquid-fuel rocket engine (1,700 kgf thrust). Maximum speed 960 km/h, sustained rocket burn 7.5 minutes, service ceiling 12,000 m. Armament: 2 × 30 mm MK 108 cannons (only 60 rounds total — the pilot had ~3 seconds of firing time). The Komet's defining feature was its short in-service endurance — only ~7.5 minutes of rocket burn followed by glider descent + landing on skid (the aircraft had no retractable wheels, only a jettisonable launch dolly + touchdown skid).
Me 163 combat use 1944-1945 was disappointing. The aircraft's high speed allowed it to intercept RAF + USAAF bomber formations the Luftwaffe could not otherwise reach, but the short rocket-burn time + limited ammunition + skid-down hazard combined to limit in-service effectiveness. JG 400 (the sole Me 163 fighter wing) downed only ~16 Allied aircraft 1944-1945, while suffering ~80 Me 163 losses (most non-combat — fuel explosions, skid accidents). The aircraft remains one of the most-iconic WWII unusual aircraft. About 11 Me 163 airframes survive in 2026 at museums worldwide.
For Kids — a shorter, friendlier version
The Messerschmitt Me 163 Komet (Comet) was the only rocket-powered fighter ever to enter combat service. It first flew under rocket power on August 13, 1941. About 370 Komets were built between 1943 and 1945. JG 400 was the only Luftwaffe unit that flew Komets.
The Me 163 is 19 feet long with a 31-foot wingspan, smaller than a school bus. One Walter HWK 109-509 rocket engine made 3,800 pounds of thrust. Top speed is 596 mph, faster than a rifle bullet. The rocket could burn for only 7.5 minutes before fuel ran out.
The Komet had no landing gear, only a launch dolly and a touchdown skid. The plane was launched on the dolly, dropped it after takeoff, and landed on the skid like a glider. Two 30mm MK 108 cannons gave only 3 seconds of total firing time. The fuel was very dangerous: it could burn through the pilot's flight suit on contact.
JG 400 Komets attacked Allied B-17 and B-24 bombers in 1944 and 1945. The Komet was so fast that it shot past bombers before pilots could aim. About 16 Allied planes were destroyed by Komets; about 80 Komets were lost, many to accidents and fuel handling. About 11 Me 163s survive today in museums.
Fun Facts
- The Me 163 Komet was the only rocket-powered fighter in combat history.
- About 370 Komets were built between 1943 and 1945.
- The Me 163 is 19 feet long, smaller than a school bus.
- Top speed is 596 mph, faster than a rifle bullet.
- The Komet could burn its rocket fuel for only 7.5 minutes.
- The Komet had no wheels, only a launch dolly and a touchdown skid.
- About 11 Me 163s survive today in museums.
Kids’ Questions
How did it land?
The Komet had no retractable wheels. To take off, the plane sat on a 2-wheel dolly. After takeoff, the dolly fell away and the Komet kept climbing. To land, the rocket engine was off (fuel gone) and the plane glided down. A skid under the body slid along the runway like a sled. Many landings were rough, and crews had to recover the plane with a crane.
Why was the fuel so dangerous?
The Komet used T-Stoff (hydrogen peroxide) and C-Stoff (hydrazine and methanol). When mixed, these fuels burst into flame. T-Stoff could also dissolve flesh on contact, like very strong acid. Several pilots were lost when their fuel tanks ruptured and T-Stoff burned through their flight suits. Ground crews wore special protective gear when fueling the Komet.
Why so few wins?
The Komet was 200 mph faster than American B-17 bombers. This sounds great, but it meant the Komet shot past bombers in seconds, with no time to aim. The 2 cannons had only 3 seconds of total firing time. Pilots had only one chance per pass. Most Komet attacks missed. About 16 Allied planes were destroyed by Komets while 80 Komets were lost.
Variants
- Me 163A (test)
- Pre-production test variant. About 10 built.
- Me 163B (in-service)
- Standard in-service variant. About 340 built. JG 400 service.
- Me 163C / D (improved proposed)
- Improved variants. Few built before war's end.
Notable Operators
- Luftwaffe Jagdgeschwader 400 (JG 400)
- Sole operator. About 50 Me 163s in service 1944-1945. ~16 Allied aircraft downed; ~80 Me 163 losses.
Frequently Asked Questions
How long could the Me 163 fly?
About 7.5 minutes of rocket burn followed by glider descent. The Komet's rocket fuel (Walter T-Stoff hydrogen peroxide + Z-Stoff calcium permanganate, later C-Stoff hydrazine-methanol mix) consumed in 7.5 minutes at full thrust. After rocket cut-off, the aircraft glided back to base. Total mission time from takeoff to landing was ~30 minutes; combat time (after rocket cut-off the aircraft was a glider with limited manoeuvring) was usually 1-2 minutes.
Did the Me 163 land on wheels?
No. The Komet had no retractable landing gear — only a jettisonable launch dolly + touchdown skid. After mission completion, the pilot landed on the skid in a controlled belly-landing on grass airfield. Landing accidents accounted for the majority of Me 163 losses. Some pilots died from fuel-tank rupture during hard landings (T-Stoff is highly corrosive + flammable; spilled fuel could ignite from landing impact).
How is the Me 163 different from the Me 263?
The Me 263 was the proposed successor with refined airframe airframe + retractable landing gear + larger fuel tanks. Only 3 prototypes were built; the Me 263 did not enter service before war's end. The Soviet MiG-9 fighter (1946) used Me 263 captured plans engineering data captured at war's end.
Sources
See Also
- Messerschmitt Me 263 — Direct refined rocket-fighter successor
- Messerschmitt Me 262 — Sister German jet-fighter contemporary
- Bell X-1 — Postwar American rocket-aircraft successor concept
- Heinkel He 176 — Earlier German rocket aircraft