Boom Supersonic announces engine developer for planned Overture jet
Boom Supersonic has finally made a crucial step toward developing a new supersonic passenger plane.
The aerospace startup said Tuesday that it had signed an agreement with three different companies to develop an engine for its planned Overture aircraft.
Dubbed "Symphony," the engine that would power the aircraft still has a long way to go. The engine's design is still to come, and Boom said it would turn to Florida Turbine Technologies to help develop it. FTT is one of three firms Boom has turned to for the engine, saying it has also tabbed GE Additive "for additive technology design consulting" and StandardAero for maintenance.
News of the agreement comes just more than three months after Rolls-Royce backed out of a collaboration with Boom on a conceptual study for the program, withdrawing itself from consideration to be the engine maker.
"Rolls-Royce has determined that the commercial aviation supersonic market is not currently a priority for us," the company said at the time. Boom said in a statement that it would announce an engine supplier by year's end.
Since then, the status of Boom and the Overture program has been in doubt. The company unveiled a refreshed quad-jet design for the airframe during the Farnborough Airshow this summer, but critics were quick to point out that without an engine, any aircraft renderings were only conceptual at best. Some at the time cited comments that referred to Boom as the "Theranos of aviation," referring to the fraudulent medical testing company founded by Elizabeth Holmes — a comparison that CEO Blake Scholl roundly rejected.
Boom aims to build and certify its Overture jet by the end of the decade, and says that it can make supersonic air travel economically and environmentally sustainable. The company has received orders from several airlines, including American Airlines and United Airlines in the U.S.
However, detractors have questioned several of Boom's claims, pointing out that the Overture would suffer the same limitation as the Concorde: Due to the ultraloud sonic boom created when traveling faster than sound, the plane would be restricted to slower speeds near overpopulated areas. This would effectively mean that it could not go full speed over land. Because its expected range means a fuel stop would be necessary on flights across the Pacific (thus negating the time savings of supersonic flying), the aircraft's advantages would be largely restricted to the transatlantic market.
Whether Boom will ultimately succeed remains unclear, but the agreement with an engine maker nevertheless represents a major step toward a first build and successful flight.
“Developing a supersonic engine specifically for Overture offers by far the best value proposition for our customers,” Scholl said in a statement. “Through the Symphony program, we can provide our customers with an economically and environmentally sustainable supersonic airplane—a combination unattainable with the current constraints of derivative engines and industry norms.”
TPG featured card
Rewards
| 4X | Earn 4X Membership Rewards® points per dollar spent on purchases at restaurants worldwide, on up to $50,000 in purchases per calendar year, then 1X points for the rest of the year. |
| 4X | Earn 4X Membership Rewards® points per dollar spent at US supermarkets, on up to $25,000 in purchases per calendar year, then 1X points for the rest of the year. |
| 3X | Earn 3X Membership Rewards® points per dollar spent on flights booked directly with airlines or on AmexTravel.com. |
| 2X | Earn 2X Membership Rewards® points per dollar spent on prepaid hotels and other eligible purchases booked on AmexTravel.com. |
| 1X | Earn 1X Membership Rewards® point per dollar spent on all other eligible purchases. |
Intro offer
Annual Fee
Recommended Credit
Why We Chose It
There’s a lot to love about the Amex Gold. It’s a fan favorite thanks to its fantastic bonus-earning rates at restaurants worldwide and at U.S. supermarkets. If you’re hitting the skies soon, you’ll also earn bonus Membership Rewards points on travel. Paired with up to $120 in Uber Cash annually (for U.S. Uber rides or Uber Eats orders, card must be added to Uber app and you can redeem with any Amex card), up to $120 in annual dining statement credits to be used with eligible partners, an up to $84 Dunkin’ credit each year at U.S. Dunkin Donuts and an up to $100 Resy credit annually, there’s no reason that foodies shouldn’t add the Amex Gold to their wallet. These benefits alone are worth more than $400, which offsets the $325 annual fee on the Amex Gold card. Enrollment is required for select benefits. (Partner offer)Pros
- 4 points per dollar spent on dining at restaurants worldwide and U.S. supermarkets (on the first $50,000 in purchases per calendar year; then 1 point per dollar spent thereafter and $25,000 in purchases per calendar year; then 1 point per dollar spent thereafter, respectively)
- 3 points per dollar spent on flights booked directly with the airline or with amextravel.com
- Packed with credits foodies will enjoy
- Solid welcome bonus
Cons
- Not as useful for those living outside the U.S.
- Some may have trouble using Uber and other dining credits
- You may be eligible for as high as 100,000 Membership Rewards® Points after you spend $6,000 in eligible purchases on your new Card in your first 6 months of Card Membership. Welcome offers vary and you may not be eligible for an offer. Apply to know if you’re approved and find out your exact welcome offer amount – all with no credit score impact. If you’re approved and choose to accept the Card, your score may be impacted.
- Earn 4X Membership Rewards® points per dollar spent on purchases at restaurants worldwide, on up to $50,000 in purchases per calendar year, then 1X points for the rest of the year.
- Earn 4X Membership Rewards® points per dollar spent at US supermarkets, on up to $25,000 in purchases per calendar year, then 1X points for the rest of the year.
- Earn 3X Membership Rewards® points per dollar spent on flights booked directly with airlines or on AmexTravel.com.
- Earn 2X Membership Rewards® points per dollar spent on prepaid hotels and other eligible purchases booked on AmexTravel.com.
- Earn 1X Membership Rewards® point per dollar spent on all other eligible purchases.
- $120 Uber Cash on Gold: Add your Gold Card to your Uber account and get $10 in Uber Cash each month to use on orders and rides in the U.S. when you select an American Express Card for your transaction. That’s up to $120 Uber Cash annually. Plus, after using your Uber Cash, use your Card to earn 4X Membership Rewards® points for Uber Eats purchases made with restaurants or U.S. supermarkets. Point caps and terms apply.
- $84 Dunkin' Credit: With the $84 Dunkin' Credit, you can earn up to $7 in monthly statement credits after you enroll and pay with the American Express® Gold Card at U.S. Dunkin' locations. Enrollment is required to receive this benefit.
- $100 Resy Credit: Get up to $100 in statement credits each calendar year after you pay with the American Express® Gold Card to dine at U.S. Resy restaurants or make other eligible Resy purchases. That's up to $50 in statement credits semi-annually. Enrollment required.
- $120 Dining Credit: Satisfy your cravings, sweet or savory, with the $120 Dining Credit. Earn up to $10 in statement credits monthly when you pay with the American Express® Gold Card at Grubhub, The Cheesecake Factory, Goldbelly, Wine.com, and Five Guys. Enrollment required.
- Explore over 1,000 upscale hotels worldwide with The Hotel Collection and receive a $100 credit towards eligible charges* with every booking of two nights or more through AmexTravel.com. *Eligible charges vary by property.
- No Foreign Transaction Fees.
- Annual Fee is $325.
- Terms Apply.
Rewards Rate
| 4X | Earn 4X Membership Rewards® points per dollar spent on purchases at restaurants worldwide, on up to $50,000 in purchases per calendar year, then 1X points for the rest of the year. |
| 4X | Earn 4X Membership Rewards® points per dollar spent at US supermarkets, on up to $25,000 in purchases per calendar year, then 1X points for the rest of the year. |
| 3X | Earn 3X Membership Rewards® points per dollar spent on flights booked directly with airlines or on AmexTravel.com. |
| 2X | Earn 2X Membership Rewards® points per dollar spent on prepaid hotels and other eligible purchases booked on AmexTravel.com. |
| 1X | Earn 1X Membership Rewards® point per dollar spent on all other eligible purchases. |
Intro Offer
You may be eligible for as high as 100,000 Membership Rewards® Points after spending $6,000 in eligible purchases on your new Card in your first 6 months of Membership. Welcome offers vary and you may not be eligible for an offer.As High As 100,000 points. Find Out Your Offer.Annual Fee
$325Recommended Credit
Credit ranges are a variation of FICO® Score 8, one of many types of credit scores lenders may use when considering your credit card application.Excellent to Good
Why We Chose It
There’s a lot to love about the Amex Gold. It’s a fan favorite thanks to its fantastic bonus-earning rates at restaurants worldwide and at U.S. supermarkets. If you’re hitting the skies soon, you’ll also earn bonus Membership Rewards points on travel. Paired with up to $120 in Uber Cash annually (for U.S. Uber rides or Uber Eats orders, card must be added to Uber app and you can redeem with any Amex card), up to $120 in annual dining statement credits to be used with eligible partners, an up to $84 Dunkin’ credit each year at U.S. Dunkin Donuts and an up to $100 Resy credit annually, there’s no reason that foodies shouldn’t add the Amex Gold to their wallet. These benefits alone are worth more than $400, which offsets the $325 annual fee on the Amex Gold card. Enrollment is required for select benefits. (Partner offer)Pros
- 4 points per dollar spent on dining at restaurants worldwide and U.S. supermarkets (on the first $50,000 in purchases per calendar year; then 1 point per dollar spent thereafter and $25,000 in purchases per calendar year; then 1 point per dollar spent thereafter, respectively)
- 3 points per dollar spent on flights booked directly with the airline or with amextravel.com
- Packed with credits foodies will enjoy
- Solid welcome bonus
Cons
- Not as useful for those living outside the U.S.
- Some may have trouble using Uber and other dining credits
- You may be eligible for as high as 100,000 Membership Rewards® Points after you spend $6,000 in eligible purchases on your new Card in your first 6 months of Card Membership. Welcome offers vary and you may not be eligible for an offer. Apply to know if you’re approved and find out your exact welcome offer amount – all with no credit score impact. If you’re approved and choose to accept the Card, your score may be impacted.
- Earn 4X Membership Rewards® points per dollar spent on purchases at restaurants worldwide, on up to $50,000 in purchases per calendar year, then 1X points for the rest of the year.
- Earn 4X Membership Rewards® points per dollar spent at US supermarkets, on up to $25,000 in purchases per calendar year, then 1X points for the rest of the year.
- Earn 3X Membership Rewards® points per dollar spent on flights booked directly with airlines or on AmexTravel.com.
- Earn 2X Membership Rewards® points per dollar spent on prepaid hotels and other eligible purchases booked on AmexTravel.com.
- Earn 1X Membership Rewards® point per dollar spent on all other eligible purchases.
- $120 Uber Cash on Gold: Add your Gold Card to your Uber account and get $10 in Uber Cash each month to use on orders and rides in the U.S. when you select an American Express Card for your transaction. That’s up to $120 Uber Cash annually. Plus, after using your Uber Cash, use your Card to earn 4X Membership Rewards® points for Uber Eats purchases made with restaurants or U.S. supermarkets. Point caps and terms apply.
- $84 Dunkin' Credit: With the $84 Dunkin' Credit, you can earn up to $7 in monthly statement credits after you enroll and pay with the American Express® Gold Card at U.S. Dunkin' locations. Enrollment is required to receive this benefit.
- $100 Resy Credit: Get up to $100 in statement credits each calendar year after you pay with the American Express® Gold Card to dine at U.S. Resy restaurants or make other eligible Resy purchases. That's up to $50 in statement credits semi-annually. Enrollment required.
- $120 Dining Credit: Satisfy your cravings, sweet or savory, with the $120 Dining Credit. Earn up to $10 in statement credits monthly when you pay with the American Express® Gold Card at Grubhub, The Cheesecake Factory, Goldbelly, Wine.com, and Five Guys. Enrollment required.
- Explore over 1,000 upscale hotels worldwide with The Hotel Collection and receive a $100 credit towards eligible charges* with every booking of two nights or more through AmexTravel.com. *Eligible charges vary by property.
- No Foreign Transaction Fees.
- Annual Fee is $325.
- Terms Apply.